what happens if more than one pollen grain reaches or enters a stigma?
Has the stigma already "closed up" after the first grain? Do the grains produce different fruits?
Perhaps the ovary as usual bears fruit, but the fruits contain more seeds?
Could it be that after the initial pollination, the stigma is infertile and so any new grains simply go to waste, like a burglar coming upon an empty shop where all the goods have already been stolen?
I have been asking this question to my tutors, colleagues, several professional botanists and many gardeners, as well as more than once on y/answers and horticultural websites, and nobody knows!
- 7 Sep, 2008