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培育高光效品种,能提高作物的干物质生产进而增加产量。在豆科作物方面,曾有过提高光合效率而使根瘤菌固氮量增加的报告,然而,以光合效率作为选育指标是很困难的。其原因有,1.光合效率随环境条件的改变而显著变化,不易得到代表某一品种的光合效率值;2.光合率效受多基因控制,是各种生理现象的综合结果。因此,单以光合效率做指标,很难选
Nurturing high light efficiency varieties, can improve crop dry matter production and thus increase production. In leguminous crops, there have been reports of increased nitrogen fixation of rhizobia by increasing photosynthetic efficiency. However, it is difficult to use photosynthetic efficiency as a breeding indicator. The reasons are as follows: 1.Photosynthetic efficiency changes significantly with the changes of environmental conditions, not easy to get to represent a variety of photosynthetic efficiency value; 2.Photosynthetic efficiency of multi-gene control, is the result of a variety of physiological phenomena. Therefore, single photosynthetic efficiency as an indicator, it is difficult to choose