Rhododendron ('Voluptuous' x 'Phipps Yellow') #3, 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 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.
In the case of triploid ('Voluptuous' x 'Phipps Yellow') #3, a diploid crossed with a diploid produced a triploid indicating that unreduced meiosis most likely occurred for one of the diploid parents. In other words, ('Voluptuous' x 'Phipps Yellow') #3 having 39 chromosomes most likely received 13 from one diploid parent and 26 chromosomes from the other diploid parent.
Summary of Ploidy Levels
Diploid 'Phipps Yellow',
Diploid 'Voluptuous',
Triploid ('Voluptuous' x 'Phipps Yellow') #3
Source: Werner Brack
John and Sally Perkins
Showing posts with label S_Brack. Show all posts
Showing posts with label S_Brack. Show all posts
H: Monday, July 04, 2011
H: Sunday, July 03, 2011
'Phipps Yellow' is a Diploid
Rhododendron 'Phipps Yellow' has been determined to be a diploid 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 'Phipps Yellow'
Source: Werner Brack
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 'Phipps Yellow'
Source: Werner Brack
John and Sally Perkins
H: Friday, June 24, 2011
(Rhododendron yakushimanum x 'Taurus') is a Triploid
(Rhododendron yakushimanum x 'Taurus'), which is a Jack Rosenthal hybrid, 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
Triploid Rhododendron yakushimanum x 'Taurus',
Triploid 'Taurus'
Source: Werner Brack
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
Triploid Rhododendron yakushimanum x 'Taurus',
Triploid 'Taurus'
Source: Werner Brack
John and Sally Perkins
H: Thursday, February 24, 2011
'Point Defiance' Descendant is a Diploid
A seedling of [('Voluptuous' x 'Point Defiance') #1] x ('Gold Medal' x 'Bud's Yellow'), which is a Werner Brack hybrid, has been determined to be a diploid 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.
Three seedlings were ploidy tested from the Brack cross of 'Voluptuous' x 'Point Defiance'. 'Orange Leopard' and 'Stony Brook' tested as diploid. An unnamed seedling tested as triploid. This indicates that the offspring of a given cross can have different ploidy levels from one offspring to another.
The cross 'Voluptuous' x 'Point Defiance' and the cross [('Voluptuous' x 'Point Defiance') #1] x ('Gold Medal' x 'Bud's Yellow') producing diploid seedlings indicates that descendants of tetraploids can be diploids. 'Point Defiance' is a tetraploid.
When used as a seed parent, 'Horizon Monarch', which tested as a tetraploid using flow cytometry, has produced diploid as a well as tetraploid offspring.
Rhododendron 'Marinus Koster', which was determined to be a tetraploid, is the seed parent of the diploid 'Rendezvous'.
Summary of Ploidy Levels
Diploid 'Orange Leopard',
Diploid 'Rendezvous',
Diploid 'Stony Brook',
Diploid 'Voluptuous',
Diploid [('Voluptuous' x 'Point Defiance') #1] X ('Gold Medal' x 'Bud's Yellow'),
Diploid 3 Seedlings of 'Horizon Monarch' open pollinated,
Triploid Seedling of 'Voluptuous' x 'Point Defiance',
Tetraploid 'Horizon Monarch',
Tetraploid 'Marinus Koster',
Tetraploid 'Point Defiance',
Tetraploid 1 Seedlings of 'Horizon Monarch' open pollinated
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.
Three seedlings were ploidy tested from the Brack cross of 'Voluptuous' x 'Point Defiance'. 'Orange Leopard' and 'Stony Brook' tested as diploid. An unnamed seedling tested as triploid. This indicates that the offspring of a given cross can have different ploidy levels from one offspring to another.
The cross 'Voluptuous' x 'Point Defiance' and the cross [('Voluptuous' x 'Point Defiance') #1] x ('Gold Medal' x 'Bud's Yellow') producing diploid seedlings indicates that descendants of tetraploids can be diploids. 'Point Defiance' is a tetraploid.
When used as a seed parent, 'Horizon Monarch', which tested as a tetraploid using flow cytometry, has produced diploid as a well as tetraploid offspring.
Rhododendron 'Marinus Koster', which was determined to be a tetraploid, is the seed parent of the diploid 'Rendezvous'.
Summary of Ploidy Levels
Diploid 'Orange Leopard',
Diploid 'Rendezvous',
Diploid 'Stony Brook',
Diploid 'Voluptuous',
Diploid [('Voluptuous' x 'Point Defiance') #1] X ('Gold Medal' x 'Bud's Yellow'),
Diploid 3 Seedlings of 'Horizon Monarch' open pollinated,
Triploid Seedling of 'Voluptuous' x 'Point Defiance',
Tetraploid 'Horizon Monarch',
Tetraploid 'Marinus Koster',
Tetraploid 'Point Defiance',
Tetraploid 1 Seedlings of 'Horizon Monarch' open pollinated
Source: Werner Brack
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: Friday, January 14, 2011
'Orange Leopard' is a Diploid
Rhododendron 'Orange Leopard', which is a Werner Brack hybrid documented as 'Voluptuous' x 'Point Defiance', has been determined to be a diploid 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 diploid 'Orange Leopard', a diploid crossed with a tetraploid produced a diploid indicating that supper reduced meiosis most likely occurred for the tetraploid parent. In other words, 'Orange Leopard' having 26 chromosomes received 13 chromosomes from the diploid 'Voluptuous' and 13 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. An 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 diploid 'Orange Leopard', a diploid crossed with a tetraploid produced a diploid indicating that supper reduced meiosis most likely occurred for the tetraploid parent. In other words, 'Orange Leopard' having 26 chromosomes received 13 chromosomes from the diploid 'Voluptuous' and 13 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. An 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: Thursday, January 13, 2011
'Stony Brook' is a Diploid
Rhododendron 'Stony Brook', which is a Werner Brack hybrid documented as 'Voluptuous' x 'Point Defiance', has been determined to be a diploid 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 diploid 'Stony Brook', a diploid crossed with a tetraploid produced a diploid indicating that supper reduced meiosis most likely occurred for the tetraploid parent. In other words, 'Stony Brook' having 26 chromosomes received 13 chromosomes from the diploid 'Voluptuous' and 13 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. An 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 diploid 'Stony Brook', a diploid crossed with a tetraploid produced a diploid indicating that supper reduced meiosis most likely occurred for the tetraploid parent. In other words, 'Stony Brook' having 26 chromosomes received 13 chromosomes from the diploid 'Voluptuous' and 13 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. An 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: Saturday, December 11, 2010
'Taurus' is a Fertile Triploid
Rhododendron 'Taurus', which is a Frank Mossman hybrid documented as 'The Honourable Jean Marie de Montague' x R. strigillosum, 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.
Frank Mossman considered Rhododendron 'Taurus' to be his one standout hybridizing achievement.
Rhododendron 'Taurus', although reluctant to be a parent, appears to be both seed and pollen fertile. Werner Brack raised several seedlings from open pollinated seed collected from a 'Taurus' in his garden. The 'Taurus' in the Brack garden was tested and shown to be a triploid. This provides direct evidence that a triploid Rhododendron can indeed set viable seed.
A seedling of a Jack Rosenthal cross of Rhododendron yakushimanum x 'Taurus' was, also, determined to be a triploid.
In the case of the triploid 'Taurus', a diploid crossed with a diploid produced a triploid indicating that unreduced meiosis most likely occurred for one of the diploid parents. In other words, 'Taurus' having 39 chromosomes most likely received 13 from one diploid parent and 26 chromosomes from the other diploid parent.
Rhododendron 'Taurus' was also determined to be a triploid using flow cytometry by Dr. Thomas Ranney, J.R. Jones, and Nathan Lynch.
Rhododendron 'Grace Seabrook', which is also documented as 'The Honorable Jean Marie de Montague' x R. strigillosum, has been determined to be a triploid.
Rhododendron 'The Honorable Jean Marie de Montague', although a diploid, is documented as the parent of several triploids indicating 'The Honorable Jean Marie de Montague' may throw more unreduced gametes than most diploids.
Summary of Ploidy Levels
Diploid 'The Honourable Jean Marie de Montague',
Triploid 'Grace Seabrook',
Triploid 'Taurus',
Triploid A seedling of Rhododendron yakushimanum x 'Taurus'
Source: Greer Gardens
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.
Frank Mossman considered Rhododendron 'Taurus' to be his one standout hybridizing achievement.
Rhododendron 'Taurus', although reluctant to be a parent, appears to be both seed and pollen fertile. Werner Brack raised several seedlings from open pollinated seed collected from a 'Taurus' in his garden. The 'Taurus' in the Brack garden was tested and shown to be a triploid. This provides direct evidence that a triploid Rhododendron can indeed set viable seed.
A seedling of a Jack Rosenthal cross of Rhododendron yakushimanum x 'Taurus' was, also, determined to be a triploid.
In the case of the triploid 'Taurus', a diploid crossed with a diploid produced a triploid indicating that unreduced meiosis most likely occurred for one of the diploid parents. In other words, 'Taurus' having 39 chromosomes most likely received 13 from one diploid parent and 26 chromosomes from the other diploid parent.
Rhododendron 'Taurus' was also determined to be a triploid using flow cytometry by Dr. Thomas Ranney, J.R. Jones, and Nathan Lynch.
Rhododendron 'Grace Seabrook', which is also documented as 'The Honorable Jean Marie de Montague' x R. strigillosum, has been determined to be a triploid.
Rhododendron 'The Honorable Jean Marie de Montague', although a diploid, is documented as the parent of several triploids indicating 'The Honorable Jean Marie de Montague' may throw more unreduced gametes than most diploids.
Summary of Ploidy Levels
Diploid 'The Honourable Jean Marie de Montague',
Triploid 'Grace Seabrook',
Triploid 'Taurus',
Triploid A seedling of Rhododendron yakushimanum x 'Taurus'
Source: Greer Gardens
Source: Werner Brack
John and Sally Perkins
H: Sunday, November 07, 2010
'Betty Hume' is a Diploid
Rhododendron 'Betty Hume', which is a C.O. Dexter hybrid, has been determined to be a diploid 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.
The nursery literature often mentions the following as suspected polyploids:
'August Lamkin': suspected polyploid - tested triploid,
'Betty Hume': suspected tetraploid - tested diploid,
'Gargantua': suspected triploid - tested tetraploid,
'Hallelujah!': suspected tetraploid - tested triploid,
'Marie Hoffman': suspected tetraploid - tested diploid
Summary of Ploidy Levels
Diploid Betty Hume
Source: Werner Brack
Source: Don Hyatt
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.
The nursery literature often mentions the following as suspected polyploids:
'August Lamkin': suspected polyploid - tested triploid,
'Betty Hume': suspected tetraploid - tested diploid,
'Gargantua': suspected triploid - tested tetraploid,
'Hallelujah!': suspected tetraploid - tested triploid,
'Marie Hoffman': suspected tetraploid - tested diploid
Summary of Ploidy Levels
Diploid Betty Hume
Source: Werner Brack
Source: Don Hyatt
John and Sally Perkins
H: Friday, October 15, 2010
Rhododendron maximum var. 'Leachii' is a Diploid
Rhododendron maximum var. 'Leachii' has been determined to be a diploid 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 Rhododendron maximum var. 'Leachii'
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.
Summary of Ploidy Levels
Diploid Rhododendron maximum var. 'Leachii'
Source: Werner Brack
John and Sally Perkins
H: Thursday, October 14, 2010
'Anita Gehnrich' is a Triploid
Rhododendron 'Anita Gehnrich', which is a Bud Gehnrich hybrid documented as 'The Honorable Jean Marie de Montague' X R. degronianum ssp. yakushimanum, 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 'The Honorable Jean Marie de Montague', although a diploid, is documented as the parent of several triploids indicating 'The Honorable Jean Marie de Montague' may throw more unreduced gametes than most diploids.
Rhododendron 'Solidarity', which is documented as having the reversed parents of 'Anita Gehnrich', is also a triploid.
Summary of Ploidy levels
Diploid 'The Honorable Jean Marie de Montague',
Triploid 'Anita Gehnrich',
Triploid 'Solidarity'
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.
Rhododendron 'The Honorable Jean Marie de Montague', although a diploid, is documented as the parent of several triploids indicating 'The Honorable Jean Marie de Montague' may throw more unreduced gametes than most diploids.
Rhododendron 'Solidarity', which is documented as having the reversed parents of 'Anita Gehnrich', is also a triploid.
Summary of Ploidy levels
Diploid 'The Honorable Jean Marie de Montague',
Triploid 'Anita Gehnrich',
Triploid 'Solidarity'
Source: Werner Brack
John and Sally Perkins
H: Tuesday, October 12, 2010
'Solidarity' is a Fertile Triploid
Rhododendron 'Solidarity', which is a Hank Schannen hybrid documented as R. degronianum ssp. yakushimanum X 'The Honorable Jean Marie de Montague', 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 'Solidarity' is known, on occasion, to produce open pollinated seedpods and this seed will sometimes germinate.
Rhododendron 'The Honorable Jean Marie de Montague', although a diploid, is documented as the parent of several triploids indicating 'The Honorable Jean Marie de Montague' may throw more unreduced gametes than most diploids.
Rhododendron 'Anita Gehnrich', which is documented as the reverse cross of 'Solidarity, is also a triploid.
Summary of Ploidy Levels
Diploid 'The Honorable Jean Marie de Montague',
Triploid 'Anita Gehnrich',
Triploid 'Solidarity'
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.
Rhododendron 'Solidarity' is known, on occasion, to produce open pollinated seedpods and this seed will sometimes germinate.
Rhododendron 'The Honorable Jean Marie de Montague', although a diploid, is documented as the parent of several triploids indicating 'The Honorable Jean Marie de Montague' may throw more unreduced gametes than most diploids.
Rhododendron 'Anita Gehnrich', which is documented as the reverse cross of 'Solidarity, is also a triploid.
Summary of Ploidy Levels
Diploid 'The Honorable Jean Marie de Montague',
Triploid 'Anita Gehnrich',
Triploid 'Solidarity'
Source: Werner Brack
John and Sally Perkins
H: Sunday, October 10, 2010
'Grace Seabrook' is a Triploid
Rhododendron 'Grace Seabrook', which is a Cecil Seabrook hybrid documented as 'The Honorable Jean Marie de Montague' x R. strigillosum, 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 'Taurus', which is also documented as 'The Honorable Jean Marie de Montague' x R. strigillosum, has been determined to be a triploid using flow cytometry by Dr. Thomas Ranney, J.R. Jones, and Nathan Lynch. 'Taurus', although reluctant to be a parent, appears to be both seed and pollen fertile.
Rhododendron 'The Honorable Jean Marie de Montague', although a diploid, is documented as the parent of several triploids indicating 'The Honorable Jean Marie de Montague' may throw more unreduced gametes than most diploids.
Summary of Ploidy Levels
Diploid 'The Honorable Jean Marie de Montague',
Triploid 'Grace Seabrook',
Triploid 'Taurus'
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.
Rhododendron 'Taurus', which is also documented as 'The Honorable Jean Marie de Montague' x R. strigillosum, has been determined to be a triploid using flow cytometry by Dr. Thomas Ranney, J.R. Jones, and Nathan Lynch. 'Taurus', although reluctant to be a parent, appears to be both seed and pollen fertile.
Rhododendron 'The Honorable Jean Marie de Montague', although a diploid, is documented as the parent of several triploids indicating 'The Honorable Jean Marie de Montague' may throw more unreduced gametes than most diploids.
Summary of Ploidy Levels
Diploid 'The Honorable Jean Marie de Montague',
Triploid 'Grace Seabrook',
Triploid 'Taurus'
Source: Werner Brack
John and Sally Perkins
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