文献类型：期刊文章

作　　者：张吉贞[1] 孟卫东[2] 曹赛[3] 邓晓峰[3]

机构地区：[1]海南大学热带生物资源教育部重点实验室海南大学公共实验中心,海南大学生物技术实验中心,海南海口570228 [2]海南省农业科学院粮食作物研究所,海南海口571100 [3]海南大学生命科学与农学院生物技术系,海南海口570228

出　　处：《Agricultural Science & Technology》

基　　金：Supported by Natural Science Foundation of Hainan Province(80645)~~

年　　份：2008

卷　　号：9

期　　号：4

起止页码：21-24

语　　种：中文

收录情况：CAB、CAS、CSA、CSA-PROQEUST、PROQUEST、普通刊

摘　　要：[Objective] The aim of this study is to understand the high yield often photosynthetic mechanism of super hybrid rice P88S/0389.[Method] Chlorophyll and carotenoid contents were measured via the method of Wellburn and Lichtenthaler,and the photosynthetic rate and chlorophyll fluorescence parameters were measured using portable photosynthesis system.Through comparison of above measured indices between P88S/0389 and its parents,the photosynthetic characteristics were obtained.[Result] The pigment content of P88S/0389 lied between their parents,and detailedly was closer to its female parent at earlier growth stage and to its male parent at latter stage,respectively.The Pn,Fv/Fo,Fv/Fm and qP of the flag leaf of P88S/0389 were all higher than those of its parents,while the degradation rates of these parameters were slower than those of its parents.The qN of flag leaf was lower than those of its parents,and the increasing rate of qN of P88S/0389 was also slower than those of its parents,indicating the great heterosis of P88S/0389 to its parents in photosynthetic capacity.The data show that P88S/0389 is endowed with stronger capacities in light energy absorption,transformation and carbon fixation compared to its parents.[Conclusion] The light energy absorbed by hybrid mainly contributes to photochemical reaction,and little for heat dissipation.For ensuring high yield,the rice cultivars selected for production should synchronously possess higher photosynthetic rate and longer high value duration.

关 键 词：NET PHOTOSYNTHETIC rate  CHLOROPHYLL FLUORESCENCE characteristics  CHLOROPHYLL FLUORESCENCE QUENCHING

分 类 号：S511]