Effects of Different Light Quality Treatments on Growth of Blueberry Seedlings in Tissue Culture

Effects of different red light（R）and blue light（B）ratios on growth and physiology of blueberry tissue culture seedlings were studied.Ten different red and blue light ratios（i.e.1∶1，1∶2，1∶3，1∶4，1∶5，1∶6，1∶7，1∶8，1∶9 and 1∶10）were used to treat blueberry tissue culture seedlings，and content of photosynthetic pigment were determined.Results showed that contents of chlorophyll a and total chlorophyll in T4 treatment were the largest；content of chlorophyll b in T10 treatment was the highest；T3 treatment had the highest carotene content.Different proportion of blue light and red light could change growth and physiological indexes of blueberry tissue culture seedlings.