Varietal Differences among the Buckwheat Cultivars in Canada and Japan in the Long-day Condition before Flowering Followed by the Short-day Condition
It was demonstrated that the cultivars developed in Canada have similar growth characteristics to the summer eco-types in Japan. In the summer eco-type cultivars, including Canadian cultivars, it was confirmed that a LD condition, which is 16-hours day-length before flowering and approximately 12-hours day-length after that, showed an increase in the number of seeds because of a slight decrease in the seed-set ratio or a large increase in the number of bloomed flowers(yield potential), which is similar to a previous paper(Michiyama et al．, 2003). The cultivars developed in Canada appeared to have a slightly shorter stem, a higher frequency of DM clusters and a greater number of cymes per cluster, which ale growth traits correlated with high yield potential, under the LD condition when compared with the summer eco-type cultivars from Japan．But these traits become inconspicuous under a short day-length condition similar to autunm cultivation in Japan. The Canadian cultivars had alarger number of seeds per a plant than the Japanese summer eco-type cultivars under the LD condition due to a larger number of primary branches．
Buckwheat Canada Cultivar Day length Growth Japan Latitude Yield component
Hiroyasu Michiyama Masaki Urushibata Rie Hosono Tatsuya Hirano Clayton Campbell
Faculty of Agriculture, Meijo University, Shiogamaguchi 1-501, Tenpaku-ku, Nagoya, 468-8502 Japan Kade Research Ltd.Morden, Manitoba, R6M1E9, Canada
国际会议
The 10th International Symposium on Buckwheat(第十届国际荞麦会议)
陕西杨凌
英文
50-56
2007-08-14（万方平台首次上网日期，不代表论文的发表时间）