Record of honey bees in pollination of Acacia nilotica Willd ex del. (leguminosae, subfamily mimosoideae) in Rajasthan

we examined bees for pollination biology of Acacia nilotica willd ex Del. (Leguminosae, subfamily Mimosoideae) flowering at the end of the dry season in Rajasthan State, India. Acacia nilotica shows leaf-fall, flushing and flowering during dry season. The flowers are small, massed into globose heads and function as units of reproduction. The plant is self-incompatible and exhibits synchronous flowering to facilitate cross-pollination. Acacia nilotica produces small quantities of concentrated nectar, and has abundant pollen resources available to bee pollinators. we recorded some numbers of bee visitors and most fruit set on the tops of trees. Also in wasps and flies were the most numerous visitors and are likely to play a significant role in pollination.