When a pollen grain falls on a receptive stigma, the stored RNA, protein, and bioactive small molecules allow rapid germination and outgrowth of a tube that penetrates and grows within the style.

What are the factors that affect germination of pollen?

We study the essential role of different factors (temperature, PH, Sucrose, Boric acid, Calcium) in pollen germination and pollen tube growth of heliotropiumhirsutissimum (Boraginaceae).

What is pollen viability test?

Pollen viability is the ability of pollen to effect fertilization and consequent development of fruit and seed; therefore fruit set and seed set form the most authentic test for pollen viability. Seed set is determined following con- trolled pollinations of stigma compatible with the test pollen samples.