野生大豆在自然界中光温反应的规律

Response Regularity of Wild Soybean to Photoperiod and Temperature in Natural Environment

中国野生大豆分布的广泛性 ,为我们了解和认识野生大豆在自然界中光温反应的规律提供了条件。通过对 2 9个纬度区自然生长的野生大豆不同生育阶段的光温反应特点的了解 ,明确了不同纬度区野生大豆在自然环境中出苗温度是 13.1～ 14 .7℃ ,开花期温度是 2 0 .5～ 2 6 .5℃ ,成熟期温度是 10～ 19℃ ,开花临界日照时数是 13h 15min至 16h 4 0min之间。出苗越早的低纬度区材料开花和成熟越晚 。

Wild soybean (Glycine soja) is distributed widely in China, providing us enough characteristics appearances to realize the regularity of wild soybean in natural environment. According to the investigation of photoperiod and temperature effects on different developing stages of wild soybeans growing naturally from 29 latitude areas, we recognized that, in natural conditions, the germination temperature for wild soybean was 13.1—14.7℃, florescence temperature required 20.5—26.5℃, temperature for mature period required 10.0—19.0℃. The critical photoperiod for flowering was from 13 hours and 15 minutes to 16 hours and 40 minutes. For the seeds from low latitude areas, the earlier they germinated, the later they would flower and mature. For the seeds from high attitude areas, the later they germinated, the earlier they would flower and mature.