缩节胺(DPC)对干旱区杂交棉冠层结构及群体光合生产的调
节
冯国艺;姚炎帝;杜明伟;田景山;罗宏海;张亚黎;张旺锋
【期刊名称】《棉花学报》 【年(卷),期】2012(024)001
【摘要】To investigate the effects of different concentrations of dimethyl piperidinium chloride (DPC) on canopy architecture and photosynthesis in two hybrid cotton varieties, we conducted an experiment with two levels of growth regulator compare with two traditional varieties. With mild growth regulator and in cotton hybrids Biaoza A, and Shiza 2, we observed a significant increase in internode length above the sixth internode which is the starting point of the canopy, a higher and slower decline in leaf area index, larger leaf angle, greater light interception, larger diffuse non-interceptance, and a higher canopy photosynthetic rate with longer duration. This meant that photosynthetic accumulation and yield increased significantly. In Xinluzao 13 and Xinluzao 36 the internode length above the sixth internode changed slightly, while the peak in leaf area was index higher, the diffuse non-interceptance was greater, leaf area index declined quickly and less light was intercepted, the group photosynthetic capability was significantly weakened, and the yield consequently decreased. The traditional growth regulator resulted in the deterioration
缩节胺(DPC)对干旱区杂交棉冠层结构及群体光合生产的调节
