应用生态学报2012，Vol.23Issue(7)：1846-1852,7.
大穗型小麦产量形成过程中光合特性的动态变化
Dynamic changes of photosynthetic characteristics in big-spike wheat yield formation
摘要
Abstract
A field experiment was conducted to investigate the yield traits, leaf photosynthetic rate, chlorophyll fluorescence parameters, chlorophyll content ( Chl) , and leaf area index ( LAI) of eight new big-spike wheat lines, with multiple-spike cultivar Xinong 979 (Triticum aestivum cv. Xinong 979) as the control. The eight new lines had significantly higher kernel numbers per spike, kernel qualities, and 1000-grain mass but lower spike numbers per unit area, and the lines 2036, 2037, 2038, and 2040 had significantly higher yields than the control. The average net photosynthetic rate ( Pn) of the eight new lines had no significant difference with that of the control, but the PSⅡ maximum energy conversion efficiency, PSⅡ actual photochemical efficiency, photochemical quenching coefficient, and PSⅡ reaction center activity of the lines were higher than those of the control. The leaf Chl of the lines 2037, 2040, 2039, 2038 and 2036 were 17.5% , 19.1% , 15. 3% , 13.9% , and 7. 9% higher than those of the control, and their LAI was significantly higher than that of the control and declined slowly in late growth period.关键词
大穗型小麦/产量/光合特性Key words
big-spike wheat/ yield/ photosynthetic characteristics分类
农业科技引用本文复制引用
王丽芳,徐宣斌,王德轩,上官周平..大穗型小麦产量形成过程中光合特性的动态变化[J].应用生态学报,2012,23(7):1846-1852,7.基金项目
中国科学院知识创新重要方向项目(KZCX2-YW-JC408)资助. （KZCX2-YW-JC408）
