Photoinhibitive and Recovery Properties of Hybrid Rice Ⅱ You 129 under Field Conditions
Photoinhibitive and Recovery Properties of Hybrid Rice Ⅱ You 129 under Field Conditions作者机构：AgronomyDepartmentNanjingAgriculturalUniversityNanjing210095China InstituteofBotanyChineseAcademyofSciencesBeijing100093China
出 版 物：《Rice science》 (水稻科学（英文版）)
年 卷 期：2003年第10卷第1期
页 面：33-37页
学科分类：071011[理学-生物物理学] 0710[理学-生物学] 07[理学] 09[农学] 0901[农学-作物学]
基 金：This work was supported by The State Key Basic Re-search and Development Plan(G1998010100)
主 题：rice photoinhibition chlorophyll fluorescence xanthophyll cycle
摘 要：Photoinhibitive properties of super-high-yielding hybrid rice Ⅱ you 129 and its adaptation mechanism to strong light stress were investigated by measuring the light-response curve, diurnal variations of net photosynthetic rate and chlorophyll fluorescence parameters of Ⅱ you 129 leaves and compared with Shanyou 63. Photoinhibition of rice flag leaves under field conditions mainly resulted from the increase of thermal dissipation, especially for thermal dissipation depended on the xanthophyll circle, but no destruction of photosynthetic apparatus occurred. Potentially super-high-yielding hybrid rice Ⅱ you 129 was more tolerant to photoinhibition than Shanyou 63, because it had higher light saturation intensity and maximum net photosynthetic rate; more active xanthophyll cycle, and more rapid recovery ability after photoinhibition.
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