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当前位置: 首页 > 文章 > 小麦二磷酸核酮糖羧化酶和叶片导度与光合速率的关系 南京农业大学学报 1990 (1) 5-11
Position: Home > Articles > PHOTOSYNTHETIC RATE IN TRITICUM IN RELATION TO RIBULOSE BISPHOSPHATE CARBOXYLASE(RuBPCase)AND LEAF CONDUCTANCE Journal of Nanjing Agricultural University 1990 (1) 5-11

小麦二磷酸核酮糖羧化酶和叶片导度与光合速率的关系

作  者：
徐增富;方志伟;张荣铣;徐朗莱
单  位：
南京农业大学农学系;南京农业大学基础课部 中山大学生物工程研究中心
关键词：
小麦;RuBP 羧化酶;气孔导度;叶肉导度;光合速率
摘  要：
不同基因型小麦旗叶和苗期第6叶的光合速率具有明显的差异,其中野生一粒小麦(T.boeoticum)具有较高的光合速率。实验没有观察到二磷酸核酮糖羧化酶(RuBPCase)的含量、活性、活化作用以及叶片的气孔导度与光合速率之间的显著相关性;但不同基因型小麦叶片的叶肉导度与光合速率之间具有极显著的正相关(r=+0.802~(?),α=0.001)。这表明不同基因型小麦光合速率的差异可能是由于它们的叶肉导度的差异造成的。
译  名：
PHOTOSYNTHETIC RATE IN TRITICUM IN RELATION TO RIBULOSE BISPHOSPHATE CARBOXYLASE(RuBPCase)AND LEAF CONDUCTANCE
作  者：
Xu Zengfu Fang Zhiwei Zhang Rongxian (Department of Agronomy)Xu Langlai (Department of Basic Courses)
关键词：
triticum;;RuBPCase;;stomatal conductance;;mesophysll conductance;;photosynthetic rate
摘  要：
Photosynthetic rate(P_N),ribulose 1,5-bisphosphate carboxylase(RuBPCase)and leafconductance of the sixth and flag leaves of different wheat genotypes were examined to de-terrnine whether differences in RuBPCase and leaf conductance could be related to knowndifferences in their P_N.The significant variation in P_N was observed that the wild diploid T.boeoticum had higher P_N than other wheat genotypes.Differences in P_N among wheatgenotypes were not explained by differences in RuBPCase,since there was no significantcorrelation between P_N and RuBPCase activity,sepcific activity,activation and content,and no significant correlation between P_N and the ratio of RuBPCase protein to total solu-ble protein.Also,there was no significant correlation between P_N and the stomatalconductance(r=+0.284).On the other hand,higher P_N was associated with highermesophyll conductance(r=+0.802(***),significant at the 0.001 probability),so the varia-tion in P_N among wheat genotypes was to a significant extent attributable to their differ-ences in mesophyll conductance.

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