作物学报2011，Vol.37Issue(3)：489-495,7.DOI:10.3724/SP.J.1006.2011.00489
两个不同类型彩色棉品种纤维发育的生理特征
Physiological Characteristics Associated with Fiber Development in Two Different Types of Natural Colored-Cotton Cultivars
摘要
Abstract
The objective of this study was to investigate the physiological characteristics of fiber in the subtending leaf of natural colored-cotton in fiber development, and to provide theoretical basis for improvement of natural colored-cotton fiber quality using brown cotton culfivar Xiangcaimian 2, green cotton cultivar Wanmian 39, and white fiber control Sumian 9 by measuring the changes of metabolite and enzyme activities. The results showed that compared with the control, fiber cellulose accumulation for Xiangcaimian 2 and Wanmian 39 was lower, changing with an "S" curve, which could be simulated well by Richards equation with a fitting coefficient of above 0.999. Maximum accumulation, accumulative rate parameter and maximum accumulative rate for cellulose of colored cotton were all lower than those of white cotton. SPAD, soluble sugar content, activity of sucrose invertase in leaf and sucrose invertase, sucrose synthase (SS), UGPase activities in fiber for colored cotton were smaller than those for white cotton. As a result, there were no enough nutrients for fiber development and the fiber quality was worse. By correlation analysis, SS and UGPase activities and the GA3 content in fiber for colored cotton were significantly and positively correlated with fiber maturation and fiber strength (r = 0.884*, r = 0.895*; r = 0.914*, r = 0.935*; r = 0.990*, r = 0.988*), indicating that lower metabolite and enzyme activities in natural colored-cotton led to worse fiber quality.关键词
天然彩色棉/纤维品质/酶活性引用本文复制引用
张祥,刘晓飞,吕春花,董召娣,陈源,陈德华..两个不同类型彩色棉品种纤维发育的生理特征[J].作物学报,2011,37(3):489-495,7.基金项目
本研究由扬州大学新世纪学术带头人基金,江苏省"青蓝工程"学术带头人培养基金,江苏省农业科技自主创新资金[cx(08)114],江苏省自然科学基金企业创新项目(BK2009653)和江苏省高校自然科学基金(07KJB210128)资助. （08）
