MORHOLOGICAL STUDIES ON INTERGENERIC AND INTERSPECIFIC HYBRIDS OF SOME GRAIN LEGUMES

Abstract

For the first time intergeneridinterspeficic hybrids between Cajanus cajan x Vigna mungo, Vigna unguiculata x Vigna mungo and Vigna' unguiculata x Lablab purpureus have been produced. In general all the hybrids resembled female parents with some altered morphological traits. All the hybrids exhibited delayed flowering and maturity. V. unguiculata x V. mungo hybrid did not flower and perished in vegetative phase after producing few buds. C. cajan x V. mungo hybrid was highly sterile which produced s,ome pods with non- viable seeds. V. unguiculata x L. purpureus hybrid produced only two flowers and single small pod with two seeds which upon sowing produced two F2 plants, which died at an early stage. The character expressions of Ft's surpassing both the parents either in positive or negative direction were comparable to transgression effect. Resemblance to either of the parents and intermediate characters expressions were attributed to dominance and partial dominance gene action respectively.