'Ramolet' is a Triploid

Rhododendron 'Ramolet', which is a Linc Foster hybrid documented as having 'Ramapo' as a seed parent, 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.

Summary of Ploidy Levels

Diploid Rhododendron minus,
Triploid 'April Rhapsody',
Triploid 'Bluenose',
Triploid 'Purple Gem',
Triploid 'Ramapo',
Triploid 'Ramolet'

Source: John and Sally Perkins

John and Sally Perkins

'Solidarity' OP is a Triploid

An open pollinated seedling of Rhododendron 'Solidarity' 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 'Solidarity' is known to produce open pollinated seedpods and this seed will sometimes germinate. The plant tested is a seedling from such a seedpod.

Summary of Ploidy Levels

Triploid 'Solidarity',
Triploid 'Solidarity' OP

Source: John and Sally Perkins

John and Sally Perkins