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Annals of Botany 91: 473-477, 2003
© 2003 Annals of Botany Company

Characteristics of Floral Organs Related to Reliable Self-pollination in Rice (Oryza sativa L.)

TSUTOMU MATSUI*,1 and HISASHI KAGATA1

1 Experimental Farm, Kyoto University, 12-1 Hatchonawate, Takatsuki, Osaka 569-0096, Japan

* For correspondence. E-mail matsuit{at}kais.kyoto-u.ac.jp

Received: 30 September 2002; Returned for revision: 6 November 2002; Accepted: 2 December 2002

In many varieties of rice, the length of basal pores on the thecae just after anthesis is strongly correlated both with the percentage of florets receiving adequate pollen and with the number of pollen grains deposited on the stigmata and its variation (coefficient of variation). Therefore, the size of the basal pores is considered to be an important factor for the reliable self-pollination of rice. We discuss how long basal pores may facilitate self- pollination.

Key words: Basal pore, theca, pollen dispersal, stigma, Oryza sativa L., rice, self-pollination.


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