论文部分内容阅读
1986—1987年于河南安阳在田间气象条件下对棉花(Gossypium hirsutum L.)遗传型不同的4个品种(中棉12、鲁棉1号、PD4548、PD0109)的净光合速率、暗呼吸速率.光呼吸速率等进行了研究,认识到棉田光合光量子通量密度、温度、空气水汽压亏缺、CO_2浓度等是控制棉花净光合速率的重要农业气象生态因子。研究发现,抗病高产品种中棉12的光呼吸速率、暗呼吸速率、光补偿点及铃期 CO_2补偿点均低于其他遗传型,而纤维比强度高的 PD 种质系的净光合速率则较其他遗传型高。因而认为可以以高净光合速率、低光呼吸速率、低暗呼吸速率、低CO_2补偿点、低光补偿点协调一致为目标,选育具高光合生产力的高产优质棉花品种,也可通过改善环境获得优质高产。
The net photosynthetic rate and dark respiration rate of four cultivars (Zhongmian 12, Lumian 1, PD4548, PD0109) with different genotypes in cotton (Gossypium hirsutum L.) under field meteorological conditions in Anyang, Henan in 1986-1987. Light respiration rate and so on. It is concluded that quantum flux density, temperature, air-vapor pressure deficit and CO2 concentration in photosynthetic cotton are important agro-meteorological factors that control net photosynthetic rate of cotton. The results showed that the light respiration rate, dark respiration rate, light compensation point and boll CO2 compensation point of Zhongmian 12 with high fiber yield were lower than those of other genetic types, while the net photosynthetic rate Higher than other genetic types. Therefore, it is considered that high yield and high quality cotton varieties with high photosynthetic productivity can be selected with the goal of high net photosynthetic rate, low light respiration rate, low dark respiration rate, low CO2 compensation point and low light compensation point, Access to high quality and high yield.