摘要
光合作用是决定作物产量的重要生理因素,进行绿豆光合日变化特性研究,对于探究绿豆干物质积累规律和增产机理均有很大的指导意义。采用CB-1102型光合蒸腾作用测定系统,对鼓粒盛期的绿豆光合指标日变化规律进行研究。结果表明,鼓粒盛期绿豆净光合速率(Pn)的日变化、蒸腾速率(E)的日变化、气孔导度(Clea)f的日变化曲线均为单峰型曲线,峰值均出现在13:00左右;胞间CO2浓度日变化则呈现斜"V"字型的曲线特点,13:00为全天最低值。
Photosynthesis is important physiological factors for yield formation,research on diurnal variation of photosynthesis is of guiding value for exploration the rule of dry matter accumulation and yield-increasing mechanism of mung bean.With CB-1102 portable photosynthetic system,the photosynthetic rate of mung bean leaf at seed filling stage was studied.The results showed that daily changes of net photosynthetic rate presented a single peak curve,peak value appeared at noon 13：00,depression phenomenon weren＇t occurred;transpiration rate presented a single peak curve,peak value all appeared at noon 13：00;stomatal conductance also presented a single peak curve,peak value also appeared at 13：00;Variation of intercellular CO2 concentration appeared ＂V＂ shape,the lowest value appeared at 13：00.
出处
《山西农业科学》
2012年第12期1265-1267,1272,共4页
Journal of Shanxi Agricultural Sciences
基金
国家食用豆产业技术体系(CAS-09-G-11)
关键词
绿豆
净光合速率
蒸腾速率
气孔导度
细胞间隙CO2浓度
mung bean
net photosynthetic rate
transpiration rate
stoma conductance
intercellular CO2 concentration
