Stigma The top of the female part of the flower which collects pollen grains. self pollination - pollen from an anther of the same flower or same plant arrives at the stigma of the flower.

A study on rice pollination using single-cell metabolomics and microscopy reports a discovery such that pollen grains attached ... to pollen adhesion and germination to facilitate rapid pollination.

This allowed pollen grains to settle onto the ovules for fertilization. The researchers also analyzed a more complex seed plant, which had cup-like structures surrounding its ovules. These reduced ...