高光效大豆光合特性的研究─Ⅵ高光效大豆C_4—途径的探讨  

STUDY ON THE PHOTOSYNTHETIC CHARACTERS OF THE HIGH PHOTOSYNTHETIC EFFICIENCY SOYBEAN Ⅵ.AN APPROACH TO C-CARBON FIXATION PATHWAYS OF THE HIGH PHOTOSYNTHETIC EFFICIENCY SOYBEAN

作　　者：戈巧英[1] 郝乃斌[1] 张其德[1] 林建兴[1] 张性坦[1] 杜维广[1] 张桂茹[1] 

机构地区：[1]中国科学院植物研究所,中国科学院遗传研究所,黑龙江省农业科学院大豆研究所

出　　处：《大豆科学》1994年第2期139-144,共6页Soybean Science

基　　金："八五"国家科技攻关农业项目

摘　　要：本文研究了不同大豆品种（系）的与Ｃ_４—途径有关的ＰＥＰ羧化酶，ＮＡＤ（Ｐ）—苹果酸酶和丙酮酸磷酸双激酶。结果表明，上述三种酶活性在大豆品种（系）间具有明显的差异，尤以高光效品种（系）的Ｃ_４—途径关键性酶类的活性明显地高于低光效的品种，说明在Ｃ_３—植物中存在着活跃的ＣＯ_２β—羧化作用，从而有利于提高光合效率。PEPC and relevant enzymes in three soybean varletes(or strain)were studied.The experimental results are summarized as follows:1.PEPC activity of leaves in 75-34 and Youchu No.4 were evidently higher than in Jinghuang No.3.2.NAD(P)-malic enzymes activity of leaves in 75 -34 and Youchu No.4 are also higher than those in Jinghuang No.3.3.Pyruvate-Pi -dikinase activity of leaves in 75 -34 and Youchu No.4 was 192.5% and 251.16% higher than that in Jinghuang No.3 respectively.The above results indicate that active CO2 β-carboxylation took place in the C3- plant,thereby,this is useful to increase the photosynthetic efficiency.

关 键 词：大豆 光合效率 高光效 

分 类 号：S565.101[农业科学—作物学]