河北省棉花新品种主要性状参数分布解析

Main Characters Parameter Distribution Analyses of the New Cotton Varieties Bred in Hebei Province

以河北省棉花品种区域试验结果为数据源,分析了1997～2006年审定的62个春播品种的主要性状参数分布、不同年度审定品种的变化趋势及综合达标情况.结果表明:①产量和株高性状参数分布广泛,衣分、铃重、子指和果枝始节变幅较小,枯萎病指和马克隆值高频区接近育种目标;②随时间推移,产量、单株铃数、铃重、子指、纤维长度和比强度有提升趋势,马克隆值适中且基本稳定,枯萎病指变化不大,黄萎病指有所降低但仍然偏高;③纤维比强度和黄萎病指是品种达标的制约因子.

Based on the data of the regional test results in Hebei Province from 1997 to 2006,62 spring cotton varieties that examined and approved were analyzed by the main characters parameter,changed tendency in different years and the target of cotton breeding in Yellow River valley of Agricultural Department.The results showed: ①Yield and height parameter distributed widely and lent percent,boll weight,seed index and fruit branch beginning site changed narrow,the Fusarium wilt index and micronaire of some varieties approach the breeding target.②Some character such as yield,boll weight,fiber length and strength and so on increased in recent years.The Verticillium wilt index decreased a little,but still high.③fiber strength and Verticillium wilt index were the limit factor to achieve the breeding target.