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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。
The photosynthetic capacity of 12 Triticum aestivum cultivars, two of which were native to Beijing, was studied. The results showed that the net photosynthetic rate of Xiaoyan 2 2, Shaanmai 897 and 890 7- 11-5 was higher than that of other experimental cultivars, and the total PS The photochemical quantum yield (Yield), photochemical fluorescence quenching coefficient (q P) and water use efficiency (WU E) were also higher, while their dark respiration rate and non-photochemical quenching coefficient (q N) Has good photosynthetic physiological functions, and these parameters have a chain-related trend. Therefore, in order to introduce winter wheat with excellent photosynthetic and physiological functions in Beijing as a cultivar or breeding parent, the above three varieties should be the preferred varieties in the 10 field cultivars tested.