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《Journal of Anhui Agricultural Sciences》 2008-20
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Effects of Methanol Extracts from Kelp on the Development of Vigna sesquipedatis Wight under Seawater Stress

WU Wen-jie et al (College of Chemistry and Life Science,Quanzhou Normal University,Quanzhou,Fujian 362000)  
[Objective] The purpose of the research was to discuss the effects of methanol extracts from kelp on the growth of Vigna sesquipedatis Wight under seawater stress.[Method] In the Lab test the seawater was diluted into the seawater solutions with 7 kinds of concn.grades for culture of V.sesquipedatis seeds.The methanol extracts from kelp were diluted at 50,200,800 and 1 200 times by 25% seawater for culture of V.sesquipedatis seeds.After culturing for 10 d,the various growth indexes of V.sesquipedatis seedlings were determined.[Result] The seedling rate of V.sesquipedatis was decreased with the increment of seawater concn.and that of 25% seawater was 22.22%.The critical seawater concn.was confirmed as 25%.The methanol extracts from kelp diluted at 200 times had most obvious effect on seedling rate of V.sesquipedatis,increasing by 64.71% compared with CK.The extract diluted at 50 times was superior to the other dilution treatments on the growth effect of V.sesquipedatis.Compared with CK,the main root length,total fresh weight,root fresh weight,leaf fresh weight,chlorophyll a and b contents,and total chlorophyll contents in V.sesquipedatis treated by the extract diluted at 50 times were increased by 23.08%,18.27%,31.89%,44.87%,1.29%,1.43% and 1.79% resp.[Conclusion] Under 25% seawater stress the methanol extracts from kelp had obvious effect on the growth of V.sesquipedatis.
【Fund】: 泉州市科技计划项目(2005N2);; 泉州师范学院“生物化学与分子生物学”重点学科(XK0609)资助
【CateGory Index】: S643.4
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