抗虫基因导入对棉花形态、产量性状及生理特性的影响  

Effect of Insect-Resistant Gene on Cotton Economic Characters and Physiological Characteristics

作　　者：易永华[1] 邢宏宜[1] 赵俊兴[1] 

机构地区：[1]西北农林科技大学农学院棉花所,陕西杨凌712100

出　　处：《棉花学报》2009年第2期159-160,F0003,共3页Cotton Science

基　　金：陕西省自然科学基金(2004C119)

摘　　要：从棉花形态性状、产量性状和生理特性三个方面较系统地研究了抗虫基因导入对棉花生长发育的影响。结果表明,转基因抗虫棉的单株结铃数、成铃率高于其受体品种;单株果枝数、单株果节数、铃重、衣分低于受体品种。还在棉花不同发育时期对其生理、生化特性进行了测定。结果表明,在7月8日以前,转基因抗虫棉的光合强度和叶绿素含量低于其受体品种,从7月8日以后,转基因抗虫棉的光合强度和叶绿素含量高于其受体品种。研究还表明,转基因抗虫棉抗环境胁迫能力差,容易早衰。全生育期内,转基因抗虫棉MDA含量均高于其相应的受体品种,SOD、POD和CAT酶活性均比其受体品种低。Effect of insect-resistant gene on cotton economic characters and physiological characteristics was studied. The results showed that transgenic insect-resistant cotton had higher fruit retention, lower boll weight and lower lint percent. Fruit branches and fruit nodes of transgenic insect-resistant cotton were less than that of its acceptor varieties. The results also showed that before pre-flowering, content of chlorophyll and photosynthetic rate Of transgenic insect-resistant cotton were lower than its acceptor, which made growing of transgenic insect-resistant cotton weaker. After peak flowering, content of total nitrogen and chlorophyll and photosynthetic rate of transgenic insect-resistant cotton were higher than its acceptor, which were the basis for high yield and good quality. In total growing period, transgenic insect-resistant cotton had higher contents of MDA, lower activity of SOD and CAT and POD, which made the varieties weaker resistant to light, temperature and water stresses.

关 键 词：抗虫基因 棉花 农艺性状 生理特性 

分 类 号：S562[农业科学—作物学]