论文部分内容阅读
河北省棉花育种近15年来在抗枯、黄萎病育种、低酚棉育种、夏播棉育种方面有较大进展和成就,但在常规产量育种上己出现了徘徊不前的局面。分析冀棉1号到冀棉16号16个棉花品种,除4个抗病品种外,12个常规品种沿着16个品种平均产量1241 kg/ha的水平线呈上下不规则幅动趋势。要突破产量育种徘徊不前的局面,首先,对今日的育种水平及现状要有一个清楚的认识和准确的评估;其次,对己审定的品种进行纵向比较鉴定;再次,改“全优”选择为“主要性状”选择;第四,重视型态育种来突破产量的徘徊局面。
In recent 15 years, cotton breeding in Hebei Province has made great progress and achievements in combating withered, Verticillium wilt, low phenol cotton breeding and summer sowing cotton breeding. However, there has been a stagnant situation in conventional breeding. Analysis of 16 cotton varieties from Jiamian 1 to Jiamian 16 showed that the 12 conventional varieties showed an upward and downward tendency of amplitude fluctuation along the average level of 1241 kg / ha of 16 cultivars except 4 resistant varieties. To break the stagnant output breeding situation, first of all, today’s breeding level and the status quo to have a clear understanding and accurate assessment; secondly, to verify the varieties of the longitudinal comparison identified; again, change the “all-good” choice For the “major traits” choice; fourth, emphasis on type breeding to break the hovering output.