去早蕾对转基因抗虫棉黄萎病发生及早衰的影响  

Effect of Removal of Early Squares on Verticillium Wilt and Premature Senescence in Bt Transgenic Cotton

作　　者：朱荷琴[1] 冯自力[1] 宋晓轩 简桂良[2] 刘雪英[1] 

机构地区：[1]中国农业科学院棉花研究所,农业部棉花改良重点实验室,河南安阳455000 [2]中国农业科学院植物保护研究所,北京100094

出　　处：《棉花学报》2008年第6期414-417,共4页Cotton Science

基　　金：国家“十一五”支撑计划项目(2006BAD08A07)

摘　　要：以我国黄河流域和长江流域种植面积较大的8个品种为试验材料,研究了去早蕾对棉花黄萎病、生理性早衰及产量的影响。结果表明,去早蕾可显著减轻棉花黄萎病和早衰危害。2005年7月18日、8月19日和2006年8月22日,去早蕾处理黄萎病病情指数显著低于对照;除欣抗4号外,其它7个品种病情指数降低1.6%～15.0%,99B、冀668、豫杂35、中棉所41与对照之间差异达显著水平。2005年8月19、8月24日和2006年8月27日,去早蕾处理早衰指数显著低于对照;除邯109外,其它7个品种早衰指数降低1.3%～19.0%,99B、冀668、豫杂35、中棉所29之间差异达显著水平。去早蕾能显著提高棉花产量,但在不同品种之间存在差异,其中杂交棉品种表现较为明显。Eight cotton varieties with larger planting area in Huanghe River valley and Changjiang River valley are tested to research that the effect of removal of early squares on cotton Verticillium wilt , early senescence of cotton plant and yield. The result showed that the disease indexes and the early se nescence indexes of removal of early squares treat ments are evidently lower than the comparison, Disease index of removal of early squares is evidently lower than the comparison in 18 July, 19 August in 2005 and 22 August in 2006. Except Xinkang 4, disease indexes of the other 7 varieties is lower 1.60% -15.0% than the comparison. Early senescence ID of removal of early squares is also evidently lower than the comparison in 19 August, 24 August in 2005 and 27 August in 2006. Except Han 109, disease index of the other 7 varieties is 1.3-19.0% lower than those of the comparison. The yield of removal of early squares is evidently higher than the comparison. But different varieties show different effect, the hybridizing varieties are more evident.

关 键 词：去早蕾 黄萎病 早衰 

分 类 号：S435.62[农业科学—农业昆虫与害虫防治]