Pollen-stigma interaction which might be critical to the gametophytic incompatibility of Japanese pear.

  title={Pollen-stigma interaction which might be critical to the gametophytic incompatibility of Japanese pear.},
  author={Ken-ichiro Yamashita and Hideo Saita and Nobuko Hashimoto},
  journal={Journal of The Japanese Society for Horticultural Science},
A few fundamental experiments were carried out to increase information about the incompatibility of Japanese pear (Pyrus serotina R.). The results obtained are summarized as follows.1. Flowers of ′Kosui′ at anthesis were self- or cross-pollinated after emasculation, and pollen germination on stigmas at 6h after pollination was observed. Pollen grains in cross-pollination germinated well and their pollen tubes elongated into stigmas by that time. But in self-pollination, the number of pollen… 

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