GERMPLASM EXPLOITATION FOR COLD TOLERANCE IN PIGEONPEA

Abstract

Pigeonpea (Cajanus caj4n L. (Millsp.) spreads pantropically and grows
well in warm climates. The low temperatures (below 2()<'C) affect its germination
and growth adversely (Jabrun et aI., 1981). The cultivation of pigeonpea is
basically confined in tropical plains and negligible in temperate climates. The
production trends during last three decades have shown a stagnation in Indian
subcontinent and one of the possible strategy for increased production is
development of cultivars suitable for non traditional areas and cold seasons.
To evolve such cold tolerant types, a search for variation in the germplasm
is essential.