The Inheritance of Plant and Flower Traits in Rose

A series of diploid rose crosses consisting of selected parents from some introgression populations involving Old Blush, Ducher and Rosa wichurana ‘Basye Thornless’ that were crossed with 2 roses (Red Fairy and Sweet Chariot) released from the program of Ralph Moore were planted in the field in College Station.  About 350 seedlings from 8 cross combinations were evaluated for growth type, flower size, color, and form and the presence of prickles on the petioles and stems. The inheritance of the flower form, color and the presence of stem prickles generally were inherited as single loci as previously reported although some crosses displayed a distortion in their segregation probably due to the interspecific background of these progenies. The flower diameter was inherited in a quantitative fashion.