Floral morphology affects seed productivity through pollination efficiency in radish (<Emphasis Type="Italic">Raphanus sativus</Emphasis> L.) |
| |
Authors: | Kiwa Kobayashi Atsushi Horisaki Satoshi Niikura Ryo Ohsawa |
| |
Institution: | (1) Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba Ibaraki, 305-8572, Japan;(2) Tohoku Seed Company, 1625 Nishihara, Himuro, Utsunomiya Tochigi, 321-3232, Japan |
| |
Abstract: | To examine the effect of stigma position and size on seed productivity through pollination efficiency in radish, the numbers
of self and cross pollen grains on the stigmas and the seed productivity under insect-pollination were compared among four
bred lines. Lines with a small stigma or a high stigma relative to the anthers on long stamens tended to receive fewer self
and total (self + cross) pollen grains but showed a higher cross-pollination percentage (ratio of cross pollen grains to total
pollen grains on stigmas) than those with a large stigma or a lower stigma. Additionally, a higher cross-pollination percentage
was associated with a higher outcrossing percentage. This result suggests that variations in the two stigma traits affect
the outcrossing percentage via the cross-pollination percentage. Therefore, it should be possible to prevent loss of F1 purity by selecting new parental lines with floral morphology that favors cross-pollination percentage. |
| |
Keywords: | Floral morphology Insect pollination Pollination efficiency Raphanus sativus L Seed productivity Self-incompatibility |
本文献已被 SpringerLink 等数据库收录! |
|