摘要
引种到青藏高原大田的玉米 ,其拔节期的全天光合进程中 ,叶片中磷酸烯醇式丙酮酸羧化酶 (PEPC)活性总是大于相应时间点的净光合速率 (Pn) ,且全天变化幅度较 Pn 缓和。通过研究 PEPC活性和 Pn 之间差异的全天变化 ,分析了环境因子 (如光强、气温 )和气孔状态对光合作用的影响。
In the day course of photosynthesis of maize introduced into Tibetan Plateau, during its jointing stage, the phosphoenolpyruvate carboxylase(PEPC) activity in photosynthetic leaves undulated more gently and was always higher than the net photosynthetic rate( P n) at every time point. By studying the variation of difference between P n and PEPC activity throughout the day, the influence of environmental factors(e.g. light intensity and ambient temperature) and stomatal status on photosynthesis was analysed.
出处
《作物学报》
CAS
CSCD
北大核心
2003年第3期349-352,共4页
Acta Agronomica Sinica
基金
State Key Basic Research and Developm ent Plan(‘973’
G2 0 0 0 0 4870 4)
