'July Jester' X 'My Mary', which is a John and Sally Perkins hybrid, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron cumberlandense
Diploid Rhododendron prunifolium
Triploid 'July Jester' X 'My Mary'
Tetraploid Rhododendron austrinum
Tetraploid 'My Mary'
Source: John and Sally Perkins
John and Sally Perkins
Showing posts with label TetToTrip. Show all posts
Showing posts with label TetToTrip. Show all posts
H: Saturday, December 03, 2011
H: Thursday, December 01, 2011
"viscosum glaucum not" X 'Smoky Mountaineer' is a Triploid
"viscosum glaucum not" X Rhododendron calendulaceum 'Smoky Mountaineer', which is a John and Sally Perkins hybrid, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Triploid "viscosum glaucum not" X Rhododendron calendulaceum 'Smoky Mountaineer'
Tetraploid Rhododendron calendulaceum
Tetraploid Rhododendron calendulaceum 'Smoky Mountaineer'
This seedling was grown on by
Lindy Johnson
Appalachian Native Plants
676 Waddell Road
PO Box 736
Mountain City, TN 37683
Source: John and Sally Perkins
Source: Appalachian Native Plants
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Triploid "viscosum glaucum not" X Rhododendron calendulaceum 'Smoky Mountaineer'
Tetraploid Rhododendron calendulaceum
Tetraploid Rhododendron calendulaceum 'Smoky Mountaineer'
This seedling was grown on by
Lindy Johnson
Appalachian Native Plants
676 Waddell Road
PO Box 736
Mountain City, TN 37683
Source: John and Sally Perkins
Source: Appalachian Native Plants
John and Sally Perkins
H: Wednesday, November 30, 2011
(pruniflorum X arborescens) X 'Smoky Mountaineer' is a Triploid
(Rhododendron pruniflorum X Rhododendron arborescens) X Rhododendron calendulaceum 'Smoky Mountaineer', which is a John and Sally Perkins hybrid, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron pruniflorum and Rhododendron arborescens are diploid species. Rhododendron calendulaceum is a tetraploid species.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron pruniflorum,
Diploid Rhododendron arborescens,
Triploid (Rhododendron pruniflorum X Rhododendron arborescens) X Rhododendron calendulaceum 'Smoky Mountaineer',
Tetraploid Rhododendron calendulaceum,
Tetraploid Rhododendron calendulaceum 'Smoky Mountaineer'
This seedling was grown on by
Lindy Johnson
Appalachian Native Plants
676 Waddell Road
PO Box 736
Mountain City, TN 37683
Source: John and Sally Perkins
Source: Appalachian Native Plants
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron pruniflorum and Rhododendron arborescens are diploid species. Rhododendron calendulaceum is a tetraploid species.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron pruniflorum,
Diploid Rhododendron arborescens,
Triploid (Rhododendron pruniflorum X Rhododendron arborescens) X Rhododendron calendulaceum 'Smoky Mountaineer',
Tetraploid Rhododendron calendulaceum,
Tetraploid Rhododendron calendulaceum 'Smoky Mountaineer'
This seedling was grown on by
Lindy Johnson
Appalachian Native Plants
676 Waddell Road
PO Box 736
Mountain City, TN 37683
Source: John and Sally Perkins
Source: Appalachian Native Plants
John and Sally Perkins
H: Monday, November 28, 2011
prinophyllum X calendulaceum Engine Gap is a Triploid
Rhododendron prinophyllum X Rhododendron calendulaceum "Engine Gap", which is a John and Sally Perkins hybrid, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron prinophyllum is diploid. Rhododendron calendulaceum is a tetraploid species.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron prinophyllum,
Triploid Rhododendron prinophyllum X Rhododendron calendulaceum "Engine Gap",
Tetraploid Rhododendron calendulaceum
This seedling was grown on by
Lindy Johnson
Appalachian Native Plants
676 Waddell Road
PO Box 736
Mountain City, TN 37683
Source: John and Sally Perkins
Source: Appalachian Native Plants
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron prinophyllum is diploid. Rhododendron calendulaceum is a tetraploid species.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron prinophyllum,
Triploid Rhododendron prinophyllum X Rhododendron calendulaceum "Engine Gap",
Tetraploid Rhododendron calendulaceum
This seedling was grown on by
Lindy Johnson
Appalachian Native Plants
676 Waddell Road
PO Box 736
Mountain City, TN 37683
Source: John and Sally Perkins
Source: Appalachian Native Plants
John and Sally Perkins
H: Sunday, November 27, 2011
'Canobie Candy' X calendulaceum Engine Gap is a Triploid
'Canobie Candy' X Rhododendron calendulaceum "Engine Gap", which is a John and Sally Perkins hybrid, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
'Canobie Candy' is diploid. Rhododendron calendulaceum is a tetraploid species.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid 'Canobie Candy',
Triploid 'Canobie Candy' X Rhododendron calendulaceum "Engine Gap",
Tetraploid Rhododendron calendulaceum
This seedling was grown on by
Lindy Johnson
Appalachian Native Plants
676 Waddell Road
PO Box 736
Mountain City, TN 37683
Source: John and Sally Perkins
Source: Appalachian Native Plants
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
'Canobie Candy' is diploid. Rhododendron calendulaceum is a tetraploid species.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid 'Canobie Candy',
Triploid 'Canobie Candy' X Rhododendron calendulaceum "Engine Gap",
Tetraploid Rhododendron calendulaceum
This seedling was grown on by
Lindy Johnson
Appalachian Native Plants
676 Waddell Road
PO Box 736
Mountain City, TN 37683
Source: John and Sally Perkins
Source: Appalachian Native Plants
John and Sally Perkins
H: Saturday, November 26, 2011
molle x luteum is a Triploid
Rhododendron molle X Rhododendron luteum, which is a John and Sally Perkins hybrid, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron molle is diploid species. Rhododendron luteum is a tetraploid species.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron molle,
Triploid Rhododendron molle X Rhododendron luteum,
Tetraploid Rhododendron luteum
This seedling was grown on by
Lindy Johnson
Appalachian Native Plants
676 Waddell Road
PO Box 736
Mountain City, TN 37683
Source: John and Sally Perkins
Source: Appalachian Native Plants
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron molle is diploid species. Rhododendron luteum is a tetraploid species.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron molle,
Triploid Rhododendron molle X Rhododendron luteum,
Tetraploid Rhododendron luteum
This seedling was grown on by
Lindy Johnson
Appalachian Native Plants
676 Waddell Road
PO Box 736
Mountain City, TN 37683
Source: John and Sally Perkins
Source: Appalachian Native Plants
John and Sally Perkins
H: Monday, September 05, 2011
Rhododendron arborescens X Rhododendron calendulaceum is a Triploid
One seedling of Rhododendron arborescens X Rhododendron calendulaceum has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron arborescens is diploid species. Rhododendron calendulaceum is a tetraploid species.
In the case of these triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron arborescens,
Triploid 5 seedlings from Rhododendron occidentale SM189 X Rhododendron calendulaceum 'Colossus',
Tetraploid Rhododendron calendulaceum
Source: Bruce Clyburn
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron arborescens is diploid species. Rhododendron calendulaceum is a tetraploid species.
In the case of these triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron arborescens,
Triploid 5 seedlings from Rhododendron occidentale SM189 X Rhododendron calendulaceum 'Colossus',
Tetraploid Rhododendron calendulaceum
Source: Bruce Clyburn
John and Sally Perkins
H: Sunday, September 04, 2011
occidentale SM189 X calendulaceum 'Colossus' is a Triploid
Five seedlings of Rhododendron occidentale SM189 X Rhododendron calendulaceum 'Colossus' have been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron occidentale is diploid species. Rhododendron calendulaceum is a tetraploid species.
In the case of these 5 triploids (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron occidentale,
Triploid 5 seedlings from Rhododendron occidentale SM189 X Rhododendron calendulaceum 'Colossus',
Tetraploid Rhododendron calendulaceum
Source: Bruce Clyburn
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron occidentale is diploid species. Rhododendron calendulaceum is a tetraploid species.
In the case of these 5 triploids (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron occidentale,
Triploid 5 seedlings from Rhododendron occidentale SM189 X Rhododendron calendulaceum 'Colossus',
Tetraploid Rhododendron calendulaceum
Source: Bruce Clyburn
John and Sally Perkins
H: Wednesday, August 17, 2011
'Horizon Lakeside' X 'Doreen Gale' is a Triploid
Two seedlings of Rhododendron 'Horizon Lakeside' X 'Doreen Gale', which were raised by Marc Colombel, have been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
In the case of the triploid seedling of 'Horizon Lakeside' (2X) X 'Doreen Gale' (4X), a diploid by a tetraploid produced a tetraploid indicating that normal meiosis most likely occurred for both parents. In other words, the triploid seedlings of 'Horizon Lakeside' X 'Doreen Gale' having 39 chromosomes received 13 chromosomes from the diploid 'Horizon Lakeside' and 26 chromosomes from the tetraploid 'Doreen Gale'.
Summary of Ploidy Levels
Diploid 'Horizon Lakeside',
Tetraploid 'Doreen Gale',
Tetraploid 2 Seedlings of 'Horizon Lakeside' X 'Doreen Gale'
Source Marc Colombel
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
In the case of the triploid seedling of 'Horizon Lakeside' (2X) X 'Doreen Gale' (4X), a diploid by a tetraploid produced a tetraploid indicating that normal meiosis most likely occurred for both parents. In other words, the triploid seedlings of 'Horizon Lakeside' X 'Doreen Gale' having 39 chromosomes received 13 chromosomes from the diploid 'Horizon Lakeside' and 26 chromosomes from the tetraploid 'Doreen Gale'.
Summary of Ploidy Levels
Diploid 'Horizon Lakeside',
Tetraploid 'Doreen Gale',
Tetraploid 2 Seedlings of 'Horizon Lakeside' X 'Doreen Gale'
Source Marc Colombel
John and Sally Perkins
H: Sunday, August 14, 2011
'Horizon Monarch' X 'Rwain' is a Triploid
One seedling of Rhododendron 'Horizon Monarch' X 'Rwain', which was raised by Marc Colombel, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
In the case of the triploid seedling of 'Horizon Monarch' (4X) X 'Rwain' (3X), a tetraploid by a triploid produced a triploid indicating that triploid pollen parent 'Rwain' acted as a diploid. In other words, the triploid seedlings of 'Horizon Monarch' X 'Rwain' having 52 chromosomes most likely received 26 chromosomes from the tetraploid 'Horizon Monarch' and 13 chromosomes from the triploid 'Rwain'.
Summary of Ploidy Levels
Triploid 'Rwain',
Triploid 1 Seedling of 'Horizon Monarch' X 'Rwain'
Tetraploid 'Horizon Monarch',
Tetraploid 3 Seedlings of 'Horizon Monarch' X 'Rwain'
Source Marc Colombel
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
In the case of the triploid seedling of 'Horizon Monarch' (4X) X 'Rwain' (3X), a tetraploid by a triploid produced a triploid indicating that triploid pollen parent 'Rwain' acted as a diploid. In other words, the triploid seedlings of 'Horizon Monarch' X 'Rwain' having 52 chromosomes most likely received 26 chromosomes from the tetraploid 'Horizon Monarch' and 13 chromosomes from the triploid 'Rwain'.
Summary of Ploidy Levels
Triploid 'Rwain',
Triploid 1 Seedling of 'Horizon Monarch' X 'Rwain'
Tetraploid 'Horizon Monarch',
Tetraploid 3 Seedlings of 'Horizon Monarch' X 'Rwain'
Source Marc Colombel
John and Sally Perkins
H: Tuesday, July 12, 2011
'Pontica Album' is a Triploid
Rhododendron 'Pontica Album', which is most likely the white form of Rhododendron luteum documented by C. Loddiges in 1826, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Summary of Ploidy Levels
Diploid 'Miniatum Floribundum',
Triploid 'Aida',
Triploid 'Bronze Unique',
Triploid 'Croceum Tricolor',
Triploid 'Daviesii',
Triploid 'Deep Rose',
Triploid 'Freya',
Triploid 'Gloria Mundi',
Triploid 'Il Tasso',
Triploid 'Josephine Klinger',
Triploid 'Phebe',
Triploid 'Phidias',
Triploid 'Pontica Album',
Triploid 'Van Houttei Flore Pleno',
Triploid 'Velasquez',
Tetraploid Rhododendron luteum,
Tetraploid 'Admiraal De Ruyter',
Tetraploid 'Altaclerensis',
Tetraploid 'Ariel',
Tetraploid 'Beaté Céleste',
Tetraploid 'Bijou des Amateurs',
Tetraploid 'Bouquet de Flore',
Tetraploid 'Cardinal,
Tetraploid 'Comte de Flandre',
Tetraploid 'Corneille',
Tetraploid 'Directeur Charles Baumann',
Tetraploid 'Durante Alle',
Tetraploid 'Electum',
Tetraploid 'Eugénie',
Tetraploid 'Fénelon',
Tetraploid 'Flameola Incarnata',
Tetraploid 'Héroine Plena,
Tetraploid 'Heureuse Surprise',
Tetraploid 'Ignacea',
Tetraploid 'Julius Caesar',
Tetraploid 'Lelia',
Tetraploid 'Madame Gustave Guillemot',
Tetraploid 'Nancy Waterer',
Tetraploid 'Oscar I',
Tetraploid 'Raphael de Smet'
Source: Azaleatuin
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Summary of Ploidy Levels
Diploid 'Miniatum Floribundum',
Triploid 'Aida',
Triploid 'Bronze Unique',
Triploid 'Croceum Tricolor',
Triploid 'Daviesii',
Triploid 'Deep Rose',
Triploid 'Freya',
Triploid 'Gloria Mundi',
Triploid 'Il Tasso',
Triploid 'Josephine Klinger',
Triploid 'Phebe',
Triploid 'Phidias',
Triploid 'Pontica Album',
Triploid 'Van Houttei Flore Pleno',
Triploid 'Velasquez',
Tetraploid Rhododendron luteum,
Tetraploid 'Admiraal De Ruyter',
Tetraploid 'Altaclerensis',
Tetraploid 'Ariel',
Tetraploid 'Beaté Céleste',
Tetraploid 'Bijou des Amateurs',
Tetraploid 'Bouquet de Flore',
Tetraploid 'Cardinal,
Tetraploid 'Comte de Flandre',
Tetraploid 'Corneille',
Tetraploid 'Directeur Charles Baumann',
Tetraploid 'Durante Alle',
Tetraploid 'Electum',
Tetraploid 'Eugénie',
Tetraploid 'Fénelon',
Tetraploid 'Flameola Incarnata',
Tetraploid 'Héroine Plena,
Tetraploid 'Heureuse Surprise',
Tetraploid 'Ignacea',
Tetraploid 'Julius Caesar',
Tetraploid 'Lelia',
Tetraploid 'Madame Gustave Guillemot',
Tetraploid 'Nancy Waterer',
Tetraploid 'Oscar I',
Tetraploid 'Raphael de Smet'
Source: Azaleatuin
John and Sally Perkins
H: Wednesday, June 29, 2011
'Julia Caroline' is a Triploid
Rhododendron 'Julia Caroline', which is a Ned Brockenbrough hybrid documented as 'Horizon Lakeside' x 'Point Defiance', has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca Oliveira, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Summary of Ploidy Levels
Diploid 'Anna',
Diploid 'Horizon Lakeside',
Diploid 'Nancy Evans',
Diploid 'Norman Gill'
Diploid 'The Honourable Jean Marie de Montague',
Triploid 'Julia Caroline',
Tetraploid 'Marinus Koster',
Tetraploid 'Point Defiance'
Source: Whitney Nursery
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca Oliveira, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Summary of Ploidy Levels
Diploid 'Anna',
Diploid 'Horizon Lakeside',
Diploid 'Nancy Evans',
Diploid 'Norman Gill'
Diploid 'The Honourable Jean Marie de Montague',
Triploid 'Julia Caroline',
Tetraploid 'Marinus Koster',
Tetraploid 'Point Defiance'
Source: Whitney Nursery
John and Sally Perkins
H: Wednesday, March 23, 2011
(cumberlandense X arborescens) X calendualceum is a Triploid
Two seedlings of [(Rhododendron cumberlandense X Rhododendron arborescens) X Rhododendron calendulaceum] have been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron cumberlandense and Rhododendron arborescens are diploid species. Rhododendron calendulaceum is a tetraploid species.
In the case of these 2 triploids (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron cumberlandense,
Diploid Rhododendron arborescens,
Triploid 2 seedlings from [(Rhododendron cumberlandense X Rhododendron arborescens) X Rhododendron calendulaceum],
Tetraploid Rhododendron calendulaceum
Source: Joe Bruso
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron cumberlandense and Rhododendron arborescens are diploid species. Rhododendron calendulaceum is a tetraploid species.
In the case of these 2 triploids (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron cumberlandense,
Diploid Rhododendron arborescens,
Triploid 2 seedlings from [(Rhododendron cumberlandense X Rhododendron arborescens) X Rhododendron calendulaceum],
Tetraploid Rhododendron calendulaceum
Source: Joe Bruso
John and Sally Perkins
H: Tuesday, March 22, 2011
(cumberlandense X viscosum) X 'Apricot Surprise' is a Triploid
Two seedlings of [(Rhododendron cumberlandense X Rhododendron viscosum) X 'Apricot Surprise'], which is a John and Sally Perkins hybrid, have been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron cumberlandense and Rhododendron viscosum are diploid species. 'Apricot Surprise' is a tetraploid.
In the case of these 2 triploids (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron cumberlandense,
Diploid Rhododendron viscosum,
Triploid 2 seedlings from [(Rhododendron cumberlandense X Rhododendron viscosum) X 'Apricot Surprise' ],
Tetraploid 'Apricot Surprise'
Seedlings from this same cross were sold at the November 14, 2010 Founders Day Meeting of the ARS Massachusetts Chapter and at the November 20, 2010 Banquet of the New England Rock Garden Society.
These seedlings were grown on by
Lindy Johnson
Appalachian Native Plants
676 Waddell Road
PO Box 736
Mountain City, TN 37683
Source: John and Sally Perkins
Source: Appalachian Native Plants
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron cumberlandense and Rhododendron viscosum are diploid species. 'Apricot Surprise' is a tetraploid.
In the case of these 2 triploids (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron cumberlandense,
Diploid Rhododendron viscosum,
Triploid 2 seedlings from [(Rhododendron cumberlandense X Rhododendron viscosum) X 'Apricot Surprise' ],
Tetraploid 'Apricot Surprise'
Seedlings from this same cross were sold at the November 14, 2010 Founders Day Meeting of the ARS Massachusetts Chapter and at the November 20, 2010 Banquet of the New England Rock Garden Society.
These seedlings were grown on by
Lindy Johnson
Appalachian Native Plants
676 Waddell Road
PO Box 736
Mountain City, TN 37683
Source: John and Sally Perkins
Source: Appalachian Native Plants
John and Sally Perkins
H: Saturday, March 19, 2011
cumberlandense X 'Marydel' is a Triploid
One seedling of Rhododendron cumberlandense orange X Rhododendron atlanticum 'Marydel', which is a Sally and John Perkins hybrid, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
This seedling of Rhododendron cumberlandense orange X Rhododendron atlanticum 'Marydel' looks remarkably similar to the tetraploid pollen parent 'Marydel' differing primarily in having a small yellow blotch.
To date this seedling has proven sterile as both a seed parent and a pollen parent.
In the case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron cumberlandense,
Triploid One seedling of Rhododendron cumberlandense X Rhododendron atlanticum 'Marydel',
Tetraploid Rhododendron atlanticum,
Tetraploid Rhododendron atlanticum 'Marydel'
Source: East Fork Nursery
John and Sally Perkins
H: Saturday, March 05, 2011
Rhododendron prunifolium X Rhododendron austrinum is a Triploid
One seedling of Rhododendron prunifolium X Rhododendron austrinum, which is a John Thornton hybrid, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron prunifolium is a diploid species. Rhododendron austrinum is a tetraploid species.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron prunifolium,
Triploid 1 seedling from Rhododendron prunifolium X Rhododendron austrinum,
Tetraploid Rhododendron austrinum
Source: John Thornton
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron prunifolium is a diploid species. Rhododendron austrinum is a tetraploid species.
In this case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Summary of Ploidy Levels
Diploid Rhododendron prunifolium,
Triploid 1 seedling from Rhododendron prunifolium X Rhododendron austrinum,
Tetraploid Rhododendron austrinum
Source: John Thornton
John and Sally Perkins
H: Friday, March 04, 2011
Rhododendron viscosum X Rhododendron austrinum is a Triploid
One seedling of Rhododendron viscosum syn. serrulatum X Rhododendron austrinum, which is a John Thornton hybrid, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron viscosum is a diploid species. Rhododendron austrinum is a tetraploid species.
In the case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Rhododendron viscosum syn. serrulatum is sometimes documented as Rhododendron serrulatum but is now considered merely a southern form of Rhododendron viscosum
Summary of Ploidy Levels
Diploid Rhododendron viscosum,
Triploid 1 seedling from Rhododendron viscosum syn. serrulatum X Rhododendron austrinum,
Tetraploid Rhododendron austrinum
Source: John Thornton
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Rhododendron viscosum is a diploid species. Rhododendron austrinum is a tetraploid species.
In the case of this triploid (39 chromosomes), a diploid crossed with a tetraploid produced a triploid indicating normal meiosis occurred where the diploid contributed a 1x gamete (13 chromosomes) and the tetraploid contributed a 2x gamete (26 chromosomes).
Rhododendron viscosum syn. serrulatum is sometimes documented as Rhododendron serrulatum but is now considered merely a southern form of Rhododendron viscosum
Summary of Ploidy Levels
Diploid Rhododendron viscosum,
Triploid 1 seedling from Rhododendron viscosum syn. serrulatum X Rhododendron austrinum,
Tetraploid Rhododendron austrinum
Source: John Thornton
John and Sally Perkins
H: Saturday, January 15, 2011
'Voluptuous' x 'Point Defiance' is a Triploid
A seedling of 'Voluptuous' x 'Point Defiance', which is a Werner Brack hybrid, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
In the case of this triploid seedling of 'Voluptuous' x 'Point Defiance', a diploid crossed with a tetraploid produced a triploid indicating that normal reduced meiosis most likely occurred for both parents. In other words, the triploid seedling having 39 chromosomes received 13 chromosomes from the diploid 'Voluptuous' and 26 chromosomes from the tetraploid 'Point Defiance'. Tetraploids usually contribute 26 chromosomes to their offspring.
Three seedlings were ploidy tested from the Brack cross of 'Voluptuous' x 'Point Defiance'. 'Orange Leopard' and 'Stony Brook' tested as diploid. This unnamed seedling tested as triploid. This indicates that the offspring of a given cross can have different ploidy levels from one offspring to another.
Summary of Ploidy Levels
Diploid 'Orange Leopard',
Diploid 'Stony Brook',
Diploid 'Voluptuous',
Triploid Seedling of 'Voluptuous' x 'Point Defiance',
Tetraploid 'Point Defiance'
Source: Werner Brack
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
In the case of this triploid seedling of 'Voluptuous' x 'Point Defiance', a diploid crossed with a tetraploid produced a triploid indicating that normal reduced meiosis most likely occurred for both parents. In other words, the triploid seedling having 39 chromosomes received 13 chromosomes from the diploid 'Voluptuous' and 26 chromosomes from the tetraploid 'Point Defiance'. Tetraploids usually contribute 26 chromosomes to their offspring.
Three seedlings were ploidy tested from the Brack cross of 'Voluptuous' x 'Point Defiance'. 'Orange Leopard' and 'Stony Brook' tested as diploid. This unnamed seedling tested as triploid. This indicates that the offspring of a given cross can have different ploidy levels from one offspring to another.
Summary of Ploidy Levels
Diploid 'Orange Leopard',
Diploid 'Stony Brook',
Diploid 'Voluptuous',
Triploid Seedling of 'Voluptuous' x 'Point Defiance',
Tetraploid 'Point Defiance'
Source: Werner Brack
John and Sally Perkins
H: Tuesday, January 11, 2011
'Kehr's White Ruffles' is a Triploid
Rhododendron 'Kehr's White Ruffles', which is August Kehr hybrid documented as R. minus var. minus 'Epoch' x R. mucronulatum, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
In the case of triploid 'Kehr's White Ruffles', a suspected tetraploid crossed with a diploid produced a triploid indicating that normal reduced meiosis most likely occurred for both parents. In other words, 'Kehr's White Ruffles' having 39 chromosomes received 26 chromosomes from the suspected tetraploid 'Epoch' and 13 chromosomes from the diploid R. mucronulatum.
Summary of Ploidy Levels
Triploid 'Angel Powder',
Triploid 'Kehr's White Ruffles'
Source: John and Sally Perkins
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
In the case of triploid 'Kehr's White Ruffles', a suspected tetraploid crossed with a diploid produced a triploid indicating that normal reduced meiosis most likely occurred for both parents. In other words, 'Kehr's White Ruffles' having 39 chromosomes received 26 chromosomes from the suspected tetraploid 'Epoch' and 13 chromosomes from the diploid R. mucronulatum.
Summary of Ploidy Levels
Triploid 'Angel Powder',
Triploid 'Kehr's White Ruffles'
Source: John and Sally Perkins
John and Sally Perkins
H: Monday, January 10, 2011
'Angel Powder' is a Fertile Triploid
Rhododendron 'Angel Powder', which is Weldon Delp hybrid documented as R. minus var. minus 'Epoch' x R. mucronulatum var. mucronulatum, has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Werner Brack has germinated open pollinated seed collected from 'Angel Powder'. 'Angel Powder' is the first documented fertile triploid lepidote.
In the case of triploid 'Angel Powder', a tetraploid crossed with a diploid produced a triploid indicating that normal reduced meiosis most likely occurred for both parents. In other words, 'Angel Powder' having 39 chromosomes received 26 chromosomes from the tetraploid 'Epoch' and 13 chromosomes from the diploid R. mucronulatum.
Summary of Ploidy Levels
Triploid 'Angel Powder',
Triploid 'Kehr's White Ruffles',
Tetraploid R. minus var. minus 'Epoch'
Source: John and Sally Perkins
John and Sally Perkins
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Werner Brack has germinated open pollinated seed collected from 'Angel Powder'. 'Angel Powder' is the first documented fertile triploid lepidote.
In the case of triploid 'Angel Powder', a tetraploid crossed with a diploid produced a triploid indicating that normal reduced meiosis most likely occurred for both parents. In other words, 'Angel Powder' having 39 chromosomes received 26 chromosomes from the tetraploid 'Epoch' and 13 chromosomes from the diploid R. mucronulatum.
Summary of Ploidy Levels
Triploid 'Angel Powder',
Triploid 'Kehr's White Ruffles',
Tetraploid R. minus var. minus 'Epoch'
Source: John and Sally Perkins
John and Sally Perkins
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