How can pollen grains of wheat and rice which tend to lose viability within 30 minutes of their release be made available months later for bredding programmes ?

How can pollen grains of wheat and rice which tend to lose viability within 30 minutes of their release be made available months later for breeding programmes ?

Pollen grains lose viability within 30 minutes of their release in:

Pollen grains lose viabiliyt within 30 minutes of their release in:

Pollen grains of rice and wheat lose their viability in ....... minutes of their release

Pollen grains of rice and wheat lose their viability in....... minutes of their release.

Pollen grains of rice and wheat lose their viability in ____ Minutes of their release

Pollen grains of rice and wheat lose their viability in ….. Minutes of their release

The pollen grains lose their viability in 30 minutes in

Himgiri variety which is resistant to hill bunt disease belongs to taxon in which pollen grains lose viability within 10 minutes of their release. The taxon belongs to

Himgiri variety which is resistant to hill bunt disease belongs to taxon in which pollen grains lose viability within 10 minutes of their release. The taxon belongs to