| Effect of Soil Drought on C4 Photosynthetic Enzyme Activities of Flag Leaf and Ear in Wheat |
| WEIAi-li[1] WANGZhi-min[2] ZHAIZhi-xi[2] CONGYuan-shi[2] |
| 关键词：干旱胁迫 小麦 C4途径 麦穗 叶片 RuBPC 酶活性 光合作用 二氧化碳 |
| 主要内容：The activities of RuBPC and C4 photosynthetic enzymes in ear and flag leaf blade were examined in wheat.the results showed that photosynthesis of ear was less sensitive to soil drought than that of flag leaf,and decrease of CO2 assimilation in flag leaf blade with water stress was more than that in ear.Compared with flag leaf,ear organs(awn,glume and lemma)had higher C4 enzyme activities and lower RuBPC activity.Under moderate water-stress,the increase of C4 enzyme zctivities was induced,and the increase was higher in ear than in flag leaf.Under severe water-stress,relatively higher C4 enzyme activities were still maintained in ear,rather than that in flag leaf.It suggests that high activities of C4 enzymes in ear may contribute to its high tolerance of photosynthesis to water-stress. |
| 《中国农业科学：英文版》 2003,2(4).-413-417 |
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