Vol. 11, Special Issue 10 (2022)

Pigeonpea is one of the major grain legumes consumed for human diet in Asian and African countries. It is of prime importance to study the pod set and harvest index of this crop as these characters are directly correlated to yield. Pigeonpea genotypes of different duration groups viz., extra early (APK 1, Vamban 1, Vamban (Rg) 3, CORG 9060, ICPL 83024 and ICPL 87109 of 100 days), early (Co 5, Co (Rg) 7, ICPL 83027, UPAS 120, CORG 200401 and CORG 200402 of 120-130 days) and medium (Co 6, Vamban 2, ICPL 87119, LRG 41, CORG 990014 and CORG 990015 of 180 days) were studied for their pod setting behavior and Harvest Index (HI). There was significant difference for total opened flowers among the genotypes of the different duration groups but the flower shedding and pod set per cent were constant. The pod set per cent ranged from 6.6 to 9.7 in the pigeonpea genotypes. The HI of extra early genotypes was between 33.1 to 41.0 per cent and in early genotypes it was 27.6 to 34.1.The medium duration genotypes recorded very low HI of 20.4 to 24.1 per cent. Negative correlation was observed between HI and duration of the crop. Pod set per cent was comparatively higher in male sterile lines (10.1 to 11.8) which may be due to slow and continued pod set which is enhanced by the insect pollinators.