An attempt was made to breed for improved plant type in pigeonpen by crossing two contrasting parents viz. Vamban-I and Gulbarga-1. The F2 population clearly segregated into four distinct classes of phenotypes (plant types) in the ratio of 50 intermediate erect tall: 14 compact dwarf in the early segregants and 15 tall spreading: 1 compact bushy in the late segregants indicating that the plant type in pigeonpea was controlled by interaction of two pairs of non-allelic linkage blocks designated as DTCLSI and TALS2 and their respective allelic blocks as dtclsl and tais2.
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