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《Acta Botanica Boreali-Occidentalia Sinica》 2006-12
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Effects of Salt Stress on Photosynthetic Pigment and Gas Exchange Characteristics of the Leaves of Populus Seedlings

DING Li-na~(1,2),JIN Hua~2,YIN Ming-fang~1,ZHU Xue-jing~(1,2),ZHAO Yun-peng~3,JIANG Guo-bin~(2*)(1 College of Forestry,Shenyang Agricultural University,Shenyang 110161,China;2 Institute of Bio-resources and Environment,Dalian National University,Dalian,Liaoning 116600,China;3 Forestry Station of Yaopu in Liaoning Province,Xinmin,Liaoning 110300,China)  
'Xiaohu 24 yang' and 'Wutunyang',two poplar varieties,were used to study the effects of salt stress on the parameters related to photosynthetic pigments and gas exchanges of the leaves of Populus seedlings.It was shown that under short-term salt treatments caused the two poplar varieties to increase the chla,chlb and carotenoid contents in the leaves of their seedlings,those treatments with low pH resulting in an insignificant increases and those with high pH leading to a significant increase and those treatments with too high a pH resulting in a declining tendency in photosynthetic pigments;as the pHs of the salt concentrations increased,the parameters,Pn,Tr,Gs,gradually declined,the Ls increased initially and then declined,the Ci initial declined and then increased,i.e.,under the salt treatments with low pH,the stomatal factors were the major reasons for depressed photosynthesis in the leaves of their seedlings and under the salt treatments with high pH the non-stomatal factors were the main reasons for the lowered photosynthesis in the leaves of their seedlings;'Xiaohu 24 yang' was more sensitive to the pH of the treatment solutions than 'Wutunyang'.
【Fund】: 大连民族学院人才引进科研项目启动基金(20046205)
【CateGory Index】: S792.11
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【Co-citations】
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