Previous studies have demonstrated variation in organogenic competence
among plants within a population of Cucumis melo. In order to determi
ne if leaf explant response is under genetic control, we investigated
the distribution of the shoot regeneration frequency in F-1 and F-2 ge
nerations from parents representing extreme values for in vitro organo
genic response. Results suggest a genetic model with two genes, partia
l dominance, independent segregation and similar effects for both gene
s.