'Epoch' X augustinii is a Tetraploid

Rhododendron 'Epoch' X Rhododendron augustinii, which is a Kehr hybrid, has been determined to be a tetraploid 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 'April Rhapsody',
Triploid 'Bluenose',
Triploid 'Purple Gem',
Tetraploid 'Blue Baron',
Tetraploid 'Blue Ridge',
Tetraploid 'Epoch',
Tetraploid 'Epoch' X Rhododendron augustinii,
Tetraploid "Medium Blue",
Tetraploid Rhododendron augustinii

Source: RareFind Nursery

John and Sally Perkins

'Pink Magic' is a Diploid

Rhododendron 'Pink Magic', which is a Augie Kehr hybrid documented as Rhododendron minus var. chapmanii x Rhododendron ciliatum pink form, 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 Rhododendron minus,
Diploid Rhododendron minus var. chapmanii,
Diploid 'Dora Amateis',
Diploid 'Pink Magic'

Source: RareFind Nursery

John and Sally Perkins

'Memory of Fred Galle' is a Diploid

Rhododendron 'Memory of Fred Galle', which is a Kehr introduction, 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 'Memory of Fred Galle'

Source: RareFind Nursery

John and Sally Perkins

'Epoch' is a Tetraploid

Rhododendron minus 'Epoch', which is a Augie Kehr chemically treated Rhododendron minus, has been determined to be a tetraploid 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 minus,
Tetraploid Rhododendron minus 'Epoch'

Source: John and Sally Perkins

John and Sally Perkins

'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

'Summer Joy' is a Tetraploid

Rhododendron maximum 'Summer Joy', which is a Augie Kehr chemically treated Rhododendron maximum has been determined to be a tetraploid 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,
Tetraploid Rhododendron maximum 'Summer Joy'

Source: Rarefind Nursery

John and Sally Perkins