The plant growth and physiological and biochemical responses of root and leaves of grape Yinhong seedlings to the weak lights of 20 000,16 000,12 000,8 000 lx and the normal illumination of 25 000 lx（CK） respectivel...The plant growth and physiological and biochemical responses of root and leaves of grape Yinhong seedlings to the weak lights of 20 000,16 000,12 000,8 000 lx and the normal illumination of 25 000 lx（CK） respectively,were investigated.There was no significant dfference in growth indexes of root and leaves of grapevine seedlings between the light of 20 000 lx and CK,and the light of 16 000 lx and CK for 30 d.The chlorophyll contents,soluble protein contents,net photosynthetic rates,transpiration rates,stomatal conductance,water use efficiency and protective enzyme（CAT,POD,SOD） activities in the leaves under the lights of 20 000 lx and 16 000 lx for 30 d were all higher than those under the lights of 20 000 lx and 16 000 lx for 1 d.Under the light of 8 000 lx for 30 d,the growth indexes of root and leaves of grapevine seedlings were significantly lower than those of CK,and except for MDA content,most physiological and biochemical indexes of the leaves were significantly lower than those under the light of 8 000 lx for 1 d.Under12 000 lx,the values of most growth indexes in root and leaves and physiological and biochemical indexes in leaves were between the 16 000 lx and 8 000 lx.In conclusion,Yinhong could grow under the lights above 16 000 lx,and would be stunted by the weak light below 8 000 lx.展开更多
基金Supported by Science and Technology Innovation Team Project of Ningbo Province of China(2011B82019)Supported by Natural Science Foundation of Ningbo Province of China(Y13C150014)+1 种基金Supported by Foundation of Zhejiang Educational Committee(2011C32008)Supported by Science and Technology Project of Ningbo Province,China(2010C91049)~~
文摘The plant growth and physiological and biochemical responses of root and leaves of grape Yinhong seedlings to the weak lights of 20 000,16 000,12 000,8 000 lx and the normal illumination of 25 000 lx（CK） respectively,were investigated.There was no significant dfference in growth indexes of root and leaves of grapevine seedlings between the light of 20 000 lx and CK,and the light of 16 000 lx and CK for 30 d.The chlorophyll contents,soluble protein contents,net photosynthetic rates,transpiration rates,stomatal conductance,water use efficiency and protective enzyme（CAT,POD,SOD） activities in the leaves under the lights of 20 000 lx and 16 000 lx for 30 d were all higher than those under the lights of 20 000 lx and 16 000 lx for 1 d.Under the light of 8 000 lx for 30 d,the growth indexes of root and leaves of grapevine seedlings were significantly lower than those of CK,and except for MDA content,most physiological and biochemical indexes of the leaves were significantly lower than those under the light of 8 000 lx for 1 d.Under12 000 lx,the values of most growth indexes in root and leaves and physiological and biochemical indexes in leaves were between the 16 000 lx and 8 000 lx.In conclusion,Yinhong could grow under the lights above 16 000 lx,and would be stunted by the weak light below 8 000 lx.
