高产棉花植株形态性状及产量构成因素选育模式的探讨

对河南省2006、2007年16个春棉区试品种资料中的植株、产量因素和纤维品质共17个数量性状进行了主成分分析和多元二次回归分析。在此基础上,通过模拟仿真因素取值频率分析得出:皮棉产量≥1 500 kg/hm2的性状选育模式参数为:株高100.7~103.4 cm、果枝始节6.9~7.2节、果枝数11.5~15.6台、株铃数18.95~20.26个,铃重6.10~6.36 g、衣分42.16%~42.67%。在上述条件下,皮棉产量可望达到1 635.35 kg/hm2。

Research on the Selection Mode in High-yield Cotton Plant Morphology and Yield Components Traits

Principal component and multiple quadratic regression analysis was applied to study 17 quantitative characters(including plant,cotton yield and fiber quality etc.) of the 16 spring cotton varieties from regional experimentation in Henan Province in 2006 and 2007.Based on the above analysis,and simulating high yield cotton characteristic indexes and optimal combination,the following could be gotten: Each character selection mode parameter for lint yield≥1500kg/ha was 100.7-103.4cm plant height,6.9-7.2 initial branch 11.5-15.6 branches,18.95-20.26 bolls,6.10-6.36 gram boll weight,42.16%-42.67% lint percentage.Under the above mentioned conditions,lint yield is expected to reach 1635.35kg/ha.