Indian Agricultural Research Institute, New Delhi
1. Both self-and cross-pollination were recorded. In Muscat White, 46.00 per cent fruit-set was obtained by bagging the flowers and effecting self-pollination. Cross-pollination, however, improved the fruit-set to 67.92 per cent.
2. The concentration of pollen in the atmosphere was found to be quite low for wind pollination. Cross-pollination was effected by three insects, namely Camponotus spp., Apis spp. and Papilio demoleus.
3. The percentage of fruit-set was high in Japanese Dwarf, Dholka and Muscat White varieties, being 26.9, 20.8 and 25.5 per cent respectively. Fruit set was low in the remaining three varieties (Kandhari, 7.3%, G. B.-1, 5A% and Patiala, 4.7%). In Dholka and Muscat White the percentage of seed production was high, being 37.4 and 42.9 per cent in comparison to other varieties where the seed production varied from 25.5 to 29.1 per cent.
