Lake Keowee Population contains Triploids

Deciduous azalea hybrids selected from a native population near Lake Keowee, South Carolina have been determined to be triploids using flow cytometry by a team lead by Dr. Ranney.

Summary of Ploidy Levels

Triploid Deciduous azalea hybrids from Lake Keowee population

Source: Lake Keowee population
Source: Clarence Towe

John and Sally Perkins

Wine Spring Bald contains Triploids

Two deciduous azalea hybrids selected from a native population on Wine Spring Bald, North Carolina have been determined to be triploids using flow cytometry by a team lead by Dr. Ranney.

Summary of Ploidy Levels

Triploid 2 deciduous azalea hybrids from Wine Spring Bald population

Source: Wine Spring Bald population
Source: Clarence Towe and Ron Miller

John and Sally Perkins

Cherokee County Population contains Triploids

Four deciduous azalea hybrids selected from a native population in Cherokee County, Georgia have been determined to be triploids 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

Triploid 4 deciduous azalea hybrids from Cherokee County population

Source: Cherokee County population
Source: Charles Andrews

John and Sally Perkins

Dawsonville Population contains Triploids

A deciduous azalea hybrid in a native population in Dawsonville, Georgia 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 Dawsonville population contains Rhododendron arborescens, Rhododendron canescens, Rhododendron periclymenoides, and Rhododendron calendulaceum.

Summary of Ploidy Levels

Diploid Rhododendron arborescens
Diploid Rhododendron canescens
Diploid Rhododendron periclymenoides
Triploid 1 deciduous azalea hybrid in Dawsonville population
Tetraploid Rhododendron calendulaceum

Source: Dawsonville population
Source: Charles Andrews

John and Sally Perkins

Audra State Park contains Triploids

Two deciduous azalea hybrids in Audra State Park, West Virginia have been determined to be triploids 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.

Audra State Park in West Virginia contains Rhododendron arborescens, Rhododendron maximum, Rhododendron periclymenoides, maybe
Rhododendron prinophyllum, and Rhododendron calendulaceum.

Summary of Ploidy Levels

Diploid Rhododendron arborescens,
Diploid Rhododendron maximum,
Diploid Rhododendron periclymenoides,
Diploid Rhododendron prinophyllum,
Triploid 2 deciduous azalea hybrids in Audra State Park,
Tetraploid Rhododendron calendulaceum

Source: Audra State Park, West Virginia

John and Sally Perkins

Audra State Park: A Ploidy Haven

Audra State Park, located in northwestern West Virginia, has been determined to contain diploid, triploid, and tetraploid deciduous azaleas 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.

Audra State Park contains the diploid species periclymenoides and arborescens and the tetraploid species calendulaceum. The three species have interacted to create nature hybrids some of which are triploids.

There are indications that Rhododendron prinophyllum may also be present. Rhododendron maximum and Kalmia latifolia are present.

Summary of Ploidy Levels

Diploid Rhododendron arborescens,
Diploid Rhododendron maximum,
Diploid Rhododendron periclymenoides,
Diploid Rhododendron prinophyllum,
Triploid Some deciduous azalea hybrids in Audra State Park,
Tetraploid Rhododendron calendulaceum

Source: Audra State Park

John and Sally Perkins