棉花学报2012，Vol.24Issue(6)：548-553,6.
施钾对不同转基因棉花品种光合特性及产量和品质的影响
Effects of Potassium Application on the Photosynthetic Characteristics, Yield, and Fiber Properties of Different Transgenic Cotton Varieties
摘要
Abstract
Three transgenic cotton varieties, transgenic Bt+CpTI insect-resistant cotton CCRI 41, transgenic Bt insect-resistant cotton Guokang 1 and Simian 3, were used in the field experiments to analyze the effects of potassium application on the photo-synthetic characteristics, yield and fiber properties of different transgenic cottons. The results showed that applying potassium before cotton seedlings transplanted increased chlorophyll content, LAI, PS 11 maximal photochemical efficiency(Fv/Fm), PS II potential activity (Fv/ Fo), net photosynthetic rate (Pn), stomata conductance (Gs), and accumulation of biomass and the proportion oi distributed to reproductive organs in plant, and total bolls per hectare, boll weight and lint percentage. Lint yield of CCRI 41, Guokang 1 and Simian 3 were increased by 5.83%, 11.75% and 7.01%, respectively. In addition, fiber qualitative characters, such as 2.5% span length, tenacity, micronaire value and length uniformity were also improved. Transgenic Bt insect-resistant cotton Guokang 1 responded more active to potassium fertilizer than transgenic Bt+CpTI insect-resistant cotton CCRI 41 and Simian 3.关键词
钾肥/转基因棉花/光合特性/产量/品质Key words
potassium/ transgenic cotton/ photosynthetic characteristics/ yield/ fiber properties分类
农业科技引用本文复制引用
张海鹏,马健,文俊,周桃华..施钾对不同转基因棉花品种光合特性及产量和品质的影响[J].棉花学报,2012,24(6):548-553,6.基金项目
国家转基因专项子课题(2008ZX08005004107) （2008ZX08005004107）
国家国际科技合作项目子课题(2010DFA3325005)安徽省高校优秀青年人才基金(2010SQRL064) （2010DFA3325005）
