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《Journal of Anhui Agricultural Sciences》 2008-09
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Preliminary Study on the Contents of Si and K in Main Stem of Brassica napus L.with Different Lodging Resistance

LIU Tang-xing et al(Oilseed Crops Institute,Hunan Agricultural University,Changsha,Hunan 410128)  
[Objective] The research aimed to study the contents of Si and K in main stem of Brassica napus L.with different lodging resistance.[Method] Taking 9 varieties of B.napus with different lodging resistance as tested materials,the lodging index was calculated and the contents of Si and K in main stem were determined.And the correlation between the contents of Si and K in the stem of B.napus and the lodging resistance of plants was discussed.[Result] The lodging index of Zhongshuang 9 was lowest and its lodging resistance was strongest,while the lodging index of Xiangzayou 6 was highest.The content of Si in Zhongshuang 9 was highest(1.252 7%),which had significant difference with other varieties.The content of Si in Xiangzayou 6 was lowest,being 0.003 7%.The content of K in Zhongshuang 9 was lowest,being 0.870 0%,and that in Fuyou 3 was highest,being 9.416 7%.The correlation coefficients between the lodging index and Si content and K content in main stem were0.209 4 and 0.141 0 resp,both of the relativities were not significant.[Conclusion] The research provided reference basis for the breeding and cultivation of the high-yield rape varieties with lodging resistance.
【Fund】: 国家948项目资助(2003-Q04);; 湖南省教育厅资助项目(06D057)
【CateGory Index】: S565.4
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