Effects of Light Quality on Photosynthetic Characteristics and Several Physiological and Biochemical Indices of Cowpea Seedings
Photosynthetic characteristics and physiological and biochemical indices of dwarf cowpea leaves were studied under different light quality in the greenhouse of south China.The results showed that red light was conducive to increasing the content of chlorophyll,the photosynthetic rate,the transpiration rate and the content of soluble sugar,while blue light could increase the content of carotenoids and the content of protein.SOD,POD and CAT activity firstly increased and then decreased,the enzyme activities were at the highest level at 25 d.The MDA content in leaves of cowpea in red,blue and green light was significantly lower than the control,and the effect of green light was the most significant.