超早熟短季棉育种材料错期播种主要性状差异分析

Analysis on Main Characters of Super Early Mature Seeding Cotton in Different Sowing Periods

错期播种15个稳定的超早熟短季棉育种材料,营造相同品系"异开花期"和"异吐絮期",调查生育期、株铃数、单铃质量、衣分、籽棉产量和皮棉产量及上半部平均长度、整齐度指数、马克隆值、伸长率、断裂比指数5项纤维品质指标,分析错期播种对超早熟短季棉生育性状、产量性状、纤维品质性状的影响,验证15个超早熟育种材料的丰产性、稳定性和适应性。结果表明,不同播期的相同品系各项主要性状指标比较晚春播播种产量较高,夏播播种棉花纤维品质较好;不同品系主要性状指标差异明显,其中丰产性、稳定性较好的7个品系有可能用于短季棉晚春播或夏播生产。

The growth period,single plant boll,boll weight,lint percentage,seed yield,lint yield and five fiber quality indicators which including UHML,UI,MIC,Elg and Str have been observed by sowing 15 stable super early mature cotton seeding materials in different dates which created ＂different flowering stage＂and＂ different opening stage＂.By analyzing the influence on comprehensive characters of growth,yield and fiber quality,properties of yield,stability and adaptability in different sowing dates have been tested.The result showed that higher yield indicators of same strain existed in later spring sowing but better fiber quality facters come into being in summer sowing;the main indicators of different strains are diversity,seven excellent species are available for the cotton product.