黄河流域短季棉新品种主要性状分析

对1999～2006年黄河流域麦套棉和夏播棉区域试验中参试品种的主要性状表现以及不同年度间参试品种主要性状的变化趋势进行了分析.结果表明:76%的麦套棉品种籽棉产量集中在3 126.6～3 753.8 kg/hm2,夏播棉品种籽棉产量在2 430.0～3 010.5 kg/hm2;60%麦套棉和全部短季棉品种的纤维比强度未达标;枯萎病和黄萎病指数偏高;衣分变幅较大,铃重、子指相对稳定.麦套棉产量和品质年度间变化不大,枯萎病指数有升高趋势;夏播棉产量略有增高,抗枯萎病性明显下降.

Analysis on the Main Characters of the New Short-season Cotton Varieties in Yellow River Cotton Region

The main characters and its variation tendency in different years of 25 cotton varieties that interplanted with wheat and 7 summer cotton varieties in Yellow River Regional test from 1999 to 2006 were analyzed.The results indicated that the seed cotton yields of 76% interplanted cotton varieties were 3 126.6-3 753.8 kg/hm2,and that of summer cotton varieties were 2 430.03 010.5 kg/hm2;The index of Fusarium Wilt and the index of Vertcillium Wilt were a little high,and the fibre strength of 60% interplanted cotton and summer cotton variation couldn't reach to the standard;The variation range of height and lint percentage were large,but boll weight and seed index were stability.The variations of yield and fibre quality were not significant in different years,but the tendency of Fusarium Wilt index is high.The yield of summer cotton varieties was increased,but the resistance of Fusarium wilt reduced.