大豆开花期光温综合反应与短光照反应间关系研究

Relationship Between Light temperature Comprehensive Response and Short day Length Response of Soybean in Florescence

选取全国各地代表品种２５６ 个，在南京进行分期播种及短光照处理试验，以大豆品种生育前期在播种季节间标准差、春播自然光照与１１ 小时短光照条件下相差天数分别表示生育前期光温综合反应、短光照反应的强度。研究表明二者关系密切呈偕同变化，我国大豆生育前期光温综合反应中短光照反应是主导因子。

A total of 256 soybean varieties from different eco-regions was tested under spring planting, summer planting, autumn planting and shortten daylength conditions. The standard diviation of the days to flowering of each soybean variety under different season planting conditions was used to represent the sensitivity to daylength and temperature, and the more days to flowering under spring planting condition than under shortten daylength condition was used to describe the responsed to daylength. It was found that the sensitivity of soybean to daylength and temperature showed a close relationship with its sensitivity to daylength, and the later was a dominant factor in soybean's light-temperature comprehensive responses.