12个不同基因型冬小麦的光合能力  

PHOTOSYNTHETIC CAPABILITY OF 12 GENOTYPES OF TRITICUM AESTIVUM

作　　者：张其德[1] 蒋高明[2] 朱新广[1] 王强[1] 卢从明[1] 白克智[1] 匡廷云[1] 魏其克[3] 李振声[3] 

机构地区：[1]中国科学院植物研究所光合作用基础研究开放实验室,北京100093 [2]中国科学院植物研究所植被数量生态学开放研究实验室,北京100093 [3]中国科学院遗传研究所,北京100101

出　　处：《植物生态学报》2001年第5期532-536,共5页Chinese Journal of Plant Ecology

基　　金：国家重点基础研究发展规划项目 ( G19980 10 10 0 );中国科学院"九.五"特别支持项目 ( KZ95 -T-0 2 );光合作用基础研究开放实验室创新资金

摘　　要：研究了 12个不同基因型冬小麦 (Triticum aestivum )品种 (其中两个为北京本地品种 )的光合能力。结果表明 :小偃 2 2、陕麦 897和 890 7- 11- 5三个品种的净光合速率超过 2 0 μmol CO2 · m- 2 · s- 1 ,均比其它实验品种高 ,其PS 总的光化学量子产额 (Yield)、光化学荧光猝灭系数 (q P)和水分利用效率 (WU E)也较高 ;而其暗呼吸速率和非光化学荧光猝灭系数 (q N)较低 ,表现出具有良好的光合生理功能 ,而且这些参数具有连锁相关的趋势。因此 ,北京地区要引种外地具有优良光合生理功能的冬小麦作为栽培品种或育种亲本时 ,在所实验的 10个外地品种中 ,上述 3个品种应为首选品种。Photosynthetic capabilities of 12 different genotypes of Triticum aestivum L. were studied,including 2 cultivars from Beijing area. The results showed that net photosynthetic rate (Pn) of cultivars Xiaoyan 22,Shanmai897 and 8901-11-5 exceeded 20 μmol CO_2·m -2·s -1,and were higher than the other cultivars studied. The overall photochemical quantum yield of PSII (Yield),the coefficient of photochemical fluorescence quenching (qP) and the water use efficiency (WUE) of these three cultivars were also higher. While their dark respiration rates (Rd) and coefficients of non-photochemical fluorescence quenching (qN) were lower. The results illustrated that the photosynthetic and physiological functions of three cultivars mentioned above were by far the best among the 12 tested cultivars,and that these parameters had a pattern of chain interrelations. It is suggested that if winter wheat cultivars from other parts of the country are to be introduced into Beijing area as field-grown cultivars or as parent material for hybrid breeding,the above three cultivars should take top-priority of among 10 cultivars we studied.

关 键 词：冬小麦 净光合速率 暗呼吸系统 荧光诱导动力学参数 光合能力 基因型 

分 类 号：S512.110.1[农业科学—作物学]