Effects of different proportions of red and blue light on the chlorophyll biosynthesis and leaf anatomical structure of sweet cherry seedling leaves
In order to explore the mechanism of response of growth and development of sweet cherry seedlings to the combination of red and blue light,the LEDs as light sources were used in this study with 6 treatments including red light(0%B),combinations of red and blue light(15%B,20%B,30%B,50%B)and blue light(100%B),white light as control,and the effects of different proportions of red and blue light on the contents of chlorophyll and chlorophyll biosynthesis precursors of sweet cherry seedlings,and leaf anatomical structure of sweet cherry seedling leaves were studied to provide reference for practical application of red and blue LEDs.The results showed that red light was not conducive to the biosynthesis and accumulation of chlorophyll in leaves of sweet cherry seedlings,and contents of chlorophyll and chlorophyll biosynthesis precursors under blue light and the combination of red and blue light were relatively higher,blue light and the combination of red and blue light promoted the process of chlorophyll biosynthesis,and might affect transformation process of chlorophyll a to chlorophyll b,resulting in the increase of chlorophyll content and chlorophyll a/b ratio.Compared with red light treatment,treatments of blue light and the combination of red and blue light enhanced leaf thickness and palisade tissue thickness,were beneficial to the development of palisade tissue.
万方数据
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