应用^(14)C示踪技术测定大豆光合速率  

MEASURING PHOTOSYNTHETIC RATE OF SOYBEAN BY APPLYING ^(14)C TRACERING TECHNIQUE

作　　者：冯春生[1] 沈银保 张庆海[1] 高金方[1] 赵福林[2] 徐豹[2] 

机构地区：[1]吉林省农业科学院原子能利用研究所 [2]吉林省农业科学院大豆研究所

出　　处：《大豆科学》1989年第4期351-356,共6页Soybean Science

摘　　要：应用^(14)C放射性同位素示踪方法测定大豆的光合速率。结果表明,复叶的3个小叶间和小叶各部位间的光合速率差异不显著;叶正面的光合速率比叶背面的光合速率高24—29％;大豆没有发现午睡现象;盛花期至结荚期的光合速率高,大豆光合速率与根瘤固N之间有密切相关,并对籽实产量有重要影响。Measuring the photosynthetic rate of soybean by 14C radioactive isotopic tracering was undertaken. The results showed that, 1. There were significant difference of photosynthetic rate among 3 leaflets of a trifoliolate leaf and among different parts of a leaflet. 2. The pho-tosynthetic rate of upper surface was by 24-29% higher than the lower surface. 3. There were significant difference of photosynthetic rate among leaves on different nodes. 4. There was no 'noon-nap' exhibited in soybean photosynthesis. 5. The maximum photosynthetic rate was discovered during fullbloom to middle pod-filling stage. 6. There were significant relation between the photosynthetic rate and N-fixingability and they both affected the seed yield of soybean.

关 键 词：大豆 光合速率 测定 ^14c示踪 

分 类 号：S565.101[农业科学—作物学]