STUDIES ON PHOTOSYNTHETIC CHARACTERISTICS IN RICE HYBRID PROGENIES AND THEIR PARENTS Ⅲ. SOME ENZYME ACTIVITIES OF CARBON METABOLISM IN LEAVES
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    Abstract:

    Some enzyme activities of carbon metabolism in leaves of two rice hybrid progenies and their parents were compared. The rice hybrids used were Qingyou 159 [from Qing A and R159 ] and Guangyou No.4 [from Guang A (Y ) and Qingliuai ]. It was found that the activity of RuBPCase, and the RuBPCase/RuBPOase ratio in both hybrids were higher than those ifl their own parents. The activities,of glycolate oxidase and RuBPOase, the photorespiration(Pr) and Pr/Pn ratio in both rice hybrids were Iower than those in their respective parents. Statistical analysis showed that.the photosynthetic rates (Pn) were in postive correlation with RuBPCase activity (r=0.768), and in negative correlation with the aCtivity of glycolate oxidase (r=-0.834). Both correlation coeffcients were significantly different at p=0.05 levels.

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郭培国,李明启.杂交水稻及其亲本光合特性的研究 Ⅲ.功能叶片碳代谢中一些酶活性[J].热带亚热带植物学报,1997,5(2):68~73

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