Influence of Endocarp Thickness on Rose Achene Germination: Genetic and Environmental Factors

Abstract

Rose achenes of different genetic origins, all belonging to the species Rosa hybrids L., subjected to radiography films, germination tests, in situ observations of embryo development, and different temperature conditions during maturation showed that achene germination is affected by endocarp thickness. Furthermore, a relation between embryo development rate and endocarp thickness is demonstrated.