北疆早熟棉“新陆早”系列品种主要性状演化分析

【目的】分析新疆北疆早熟棉"新陆早"系列品种主要性状演化情况,为北疆早熟棉花育种提供参考。【方法】对41个"新陆早"系列品种8个主要性状的演化进行了分析。【结果】生育期、籽指、比强度和马克隆值没有明显的变化趋势;单铃重、皮棉产量和绒长的演化趋势都极显著拟合于幂指数曲线模型,衣分的演化趋势极显著拟合于S曲线模型。【结论】北疆早熟棉育种对生育期控制较好,对单铃重、衣分、皮棉产量和绒长的选择力度较大;在今后的育种中要加强对纤维比强度和马克隆值的选择;目前以常规育种方式来提高皮棉产量的潜力已经较小,有望通过推广杂交种、远缘杂交育种等途径加以突破。

Analysis on the Main Characters Evolution of "Xinluzao" Series Cotton Cultivars in Northern Xinjiang

【Objective】To provide some messages for early-maturity cotton breeding in northern Xinjiang cotton region.【Method】The eight characters evolutions of 41 "Xinluzao" series cotton cultivars were analyzed.【Result】The result showed that the evolution of growth period,seed index,specific strength,and microm value showed no significant variation.The evolution of boll weight,lint yield,and fuzz length were fitting to power curve model,lint percentage was fitting to S-curve model.【Conclusion】Early-mauurity cotton in Northern Xinjiang have had good control of growth period,had greater selection of boll weight,lint percentage,lint yield,and fuzz length.The selection of specific strength and microm value should been strengthen in later breeding.The potential of lint yield increase with common breeding ways was very small in current,the more hope was sent to extend the hybrid seed,and breed cultivars with wide cross breeding.