去除基部果枝对早衰棉花棉铃对位叶SPAD值及纤维素合成.PDF

安徽农业大学学报, 2015, 42(6): 964-967 Journal of Anhui Agricultural University [DOI] 10.13610/ki.1672-352x032 网络出版时间：2015-11-2 15:55:32 [URL] /kcms/detail/34.1162.S1555.064.html 去除基部果枝对早衰棉花棉铃对位叶 SPAD 值 及纤维素合成的影响 张文静，王 莹，吴 涛，王文斌，金文俊 (安徽农业大学农学院，合肥 230036) 摘 要：以荃银2 号和冀杂 999 为试验材料，通过在花铃初期去除基部 2 个果枝，研究去除基部果枝对早衰棉花 棉铃对位叶 SPAD 值和棉纤维合成相关物质含量变化的影响。结果表明，去除基部果枝后的处理组，其 SPAD 值较对 照组高；同时，去除基部果枝对棉纤维中蔗糖的转化率也有影响，主要表现为棉纤维中蔗糖转化率处理组高于对照组， 且伏桃蔗糖转化率高于秋桃蔗糖转化率；随着铃龄的增加，去除基部果枝后的棉纤维中纤维素含量高于对照组纤维素 含量。去除基部果枝可以延长棉铃对位叶的功能期，提高棉纤维中蔗糖转化率，有利于棉纤维素的生物合成。 关键词：棉花；去果枝；早衰；SPAD; 纤维素合成 中图分类号：S562 文献标识码：A 文章编号：1672−352X (2015)06−0964−04 Effect of basal fruiting branch removal on SPAD values of the leaf subtending boll and cellulose synthesis in the premature cotton ZHANG Wenjing, WANG Ying, WU Tao, WANG Wenbing, JIN Wenjun (School of Agronomy, Anhui Agricultural University, Hefei 230036) Abstract: In this study, two cotton cultivars (“Quanyin-2”, “Jiza-999”) were used to research the effect of basal fruiting branch removal on SPAD values in the leaf subtending boll in the premature cotton and the related matter content during the cotton fiber development. The results indicated that the SPAD value in the treatment of removing two basal fruiting branches was higher than that of the control ；meanwhile, removing basal two fruiting branches increased the transformation rate of sucrose and a higher transformation rate of sucrose was observed in the summer boll than in the autumn boll. With the growth of cotton age ，the cellulose content in cotton fiber was higher than that in the control after removing basal fruiting branches. In conclusion, removing basal fruit branches could extend the functional period of the subtend