棉花纤维发育后期Mg^(2+),K^+-ATP酶的活性分析  

The Mg^(2+),K^+-ATPase Activity Analysis during the Late Stage of Cotton Fiber Development

作　　者：寿元 徐楚年 

出　　处：《中国农业大学学报》1992年第S1期151-155,共5页Journal of China Agricultural University

基　　金：国家自然科学基金;科委资助课题

摘　　要：1989～1990年选用陆地棉(G.hirstum L.)北农1号品种和海岛棉(G.barbadenseL.)海7124品种为材料,对棉纤维发育后期的纤维素形成过程进行了研究。结果表明:①随着棉纤维的发育 Mg^(2+),K^+-ATP 酶活性逐渐下降。②Mg^(2+),K^+-ATP 酶活性的最适 pH 值为6.5。Mg^(2+),K^+ATP 酶活性随[Mg^(2+)],[K^+]和[NADH]/[NAD^+]的增大而变大。③Mg^(2+),K^+ATP 酶活性变化与还原性糖含量变化呈显著正相关(r=0.811~*),与纤维素含量变化呈极显著负相关(r=-0.900^(**))。④Mg^(2+),K^+-ATP 酶参与了纤维素的形成过程。The Activity analysis of Mg^(2+),K^+-ATPase in the late stage of cotton fiber development on G.hirstum L.(BAU No.1) and G.barbadense L. (Hai-7124) was studied in 1989～1990.The results were summaried as follows: 1)Mg^(2+),K^+ATPase activity were gradually decreasing during the late sta- ge of cotton fiber development. 2)The optimum pH valve of Mg^(2+),K^+ATPase activity was pH6.5.Mg^(2+),K^+ -ATPase activity was increasing when [K^+],[Mg^(2+)],and [NADH]/[NAD+~] ratio increased. 3)The correlation between Mg^(2+),K^+-ATPase activity&Reducing Sugar Co- ntent was significant at 5 percent level,with coefficient being 0.811.The co- rrelation between Mg^(2+),K^+-ATPase activity & Cellulose Content,however,was significant at 1 percent level,with coeffcient being-0.900. 4)The research indicated that Mg^(2+),K^+-ATPase was involed in cellulose formation during the late stage of cotton fiber development.

关 键 词：棉花 纤维素 Mg²⁺ K^+-ATP 酶 

分 类 号：S[农业科学]