Gene flow in self-pollinating buckwheat

Hisayoshi Hayashi, Yingjie Wang¹ and Clayton Campbell¹

¹ Graduate School of Life and Environmental Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8572, Japan ² Kade Research Ltd. Morden, Manitoba, R6M 1E9, Canada

Hisayoshi Hayashi, Yingjie Wang and Clayton Campbell. 2004. Gene flow in self-pollinating buckwheat. Advances in Buckwheat Research, Ninth International Symposium on Buckwheat, Prague, Czech Republic. pp. 355-359

Abstract: Gene flow in buckwheat was investigated using two lines of self-pollinating buckwheat. Each line had a different seed shape, namely a winged type (donor) and an oval type (recipient), with winged seeds being dominant to oval seed. Self-pollinating buckwheat showed some outcrossing. The percentage outcrossing was the highest adjacent to the pollen donor, at 1.7% and decreased with increasing of distance from the donor to the recipient. This percentage was higher than that reported for other self-pollinating crops, such as rice and soybean, but was fairly low percentage when compared to cross-pollinating corn

Key words: gene flow, outcrossing, self-pollinating buckwheat, winged seed