Mode of Pollination – Cross Pollination

Mode of Pollination – Cross Pollination

In cross pollinating species, the transfer of pollen from a flower to the stigmas of the others may be brought about by wind (anemophily) , water ( hydrophily) or insects ( entomophily). Many of the crop plants are naturally cross – pollinated. In many species, a small amount (upto 5-10 %) of selfing may also occur.

Mechanism Promoting Cross Pollination:

There are several mechanism that facilitates cross pollination, these mechanisms are descried briefly.

1. Dicliny, Dicliny, or Unisexuality is a condition, in which the flowers are either staminate (male) or pistilate (female). Dicliny is of two type’s viz. 1) Monoecy and
2) Diaecy 

i. e. Monoecy: Staminate and pistilate flowers occur in the same plant, either in the same inflorescences. E.g. Castor, Mango, Banana, and coconut or in separate inflorescences. E. g, maize, other monoecious species are cucurbits ( Cucbtrits sp), walnut, chestnut ,strawberry, rubber, grapes.