Question

The viability of pollen grain is highle variable and it is to some extent depend on ?

Answer 1

Pollen viability varies between minutes and years, and which primarily depends on the taxonomic status of the plant and on the abiotic environmental conditions. In order to maintain the viability and fertilizing ability of the pollen for a long period of time special storage conditions are needed.

Answer 2

mainly depands on temperature & humadity