野生荞麦的生长发育与光合生理研究

Study on the Growth and Photosynthetic Physiology of Wild Buckwheat

本文研究了野生荞麦的生长发育及苗期、现蕾期、开花盛期、成熟期叶片叶绿素含量以及从苗期起每20天光合速率的变化情况。结果表明:野生荞麦株高呈"S"型生长曲线、真叶数、分枝数、单株叶片面积随生长发育进程呈"单峰"的曲线变化。除金荞麦叶片的叶绿素含量呈"高-低"的变化趋势外,其余品种都呈"低-高-低"的单峰曲线变化趋势。在六种野生荞麦中,硬枝万年荞整个生育期光合速率平均值最高,为15.32 mg/dm2*h,金荞麦最低,为8.92 mg/dm2*h。

In this paper,authors have studied the growth of wild buckwheat,the change situation of the main birth time leaves chlorophyll content and every 20 days’photosynthetic rate from the seedling stage.The results show：The plant height of wild buckwheat assumes＂S＂curve,the number of leaves,branches,leaf area are the ＂single-peak＂curve.Except the Fagopyrum.cymosum leaves chlorophyll content assumes＂high-low＂tendency,other varieties assume＂low-high-low＂single peak curve change tendency.F.urophyllum posses the highest photosynthetic rate average of 15.32 mg/dm2＊h in the whole reproductive period and F.cymosum with an average of 8.92 mg/dm2＊h is the lowest.