Inheritance of spontaneous long peduncle mutation in alfalfa (Medicago sativa L.)

摘要

The mutation was characterized by long peduncle and increased number of florets per raceme. The inheritance of this character was studied in S_1 and S_2 progenies obtained by selfing a mutant plant found in S_3 generation of the Vernal cultivar, as well as in F_1, F_2 and F_3 generations of hybrids obtained by crossing short-peduncled clones with long-peduncled S_2 mutant progenies. The analysis of segregation in the selfed progenies of the mutant plants and in F_1 -- F_3 progenies of the hybrids showed that the character of long peduncle is controlled by a single recessive lp gene.