黑龙江省主要大豆品种光周期反应差异及其稳定性

本文采用光周期差值百分数分析了７２个黑龙江省主要推广大豆品种光周期反应差异及其稳定性，结果表明，这些品种虽来源于纬度相近地区，但各品种对光周期反应差异较大；品种间出苗至开花阶段的光周期差值百分数变异幅度较大（２．２－２８．９％），变异系数为６５．９％；出苗至成熟阶段变异幅度为２．０－１３．６％，变异系数为３４．７％；在供试品种中，大部分品种Ｖｅ－Ｒ１、Ｖｅ－Ｒ６阶段的ｐｄ值小于１０％；相邻纬度Ｖｅ

VARIATION AND STABILITY IN RESPONSE TO PHOTOPERIOD AMONG SOYBEAN CULTIVARS RELEASED IN HEILONGJIANG PROVINCE

Variaiton and stability in response to photoperiod among soybean cultivars released in Heilongjiang Province were analized through short daylength treatment. The results showed that the difference in response to photoperiod among the tested cultivars was much bigger although these cultivars originated in relatively close latitudes. Variation coefficents of Pd values in Ve-R 1 and Ve-R 8 of cultivars were 65.9% and 34.7%, respectively. The cultivars with Pd values less than 10% (Ve-R 1) and 5% (Ve-R 8) accounted for 13.9% of the total cultivars tested. Response of a cultivar to photoperiod was relatively stable among different years.