| 摘要: |
| 1983-1985年在河北邯郸,广平对216个棉花品种(系)进行了416品种(次)的抗蚜性筛选鉴定,并对筛选鉴定技术作了研究。根据蚜情指数,将抗蚜性程度分为抗、中抗、感、高感4级,选出多毛早3号等13个抗蚜品种材料;提出了新的蚜害程度分级标准和蚜情指数计算公式,可提高筛选鉴定的效率;室内接虫鉴定技术研究表明,其结果与田问鉴定相一致(r=0.8028,r0.01=0.641);根据不同棉花品种苗期受蚜害后恢复能力(耐害性)的差异,认为棉花品种抗蚜性筛选在苗蚜发生后期进行最为适当,这有利于对品种抗性作出全面评定。 |
| 关键词: 棉花品种 苗蚜 指数 鉴定技术 筛选鉴定 抗蚜性 分级标准 抗性筛选 棉蚜 不同品种 |
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| Abstract: |
| This work was carried out at Handan and Guangping,Hebei Province in 1983-1985.216 cotton varieties were evaluated for their resistance to the cotton aphid and the technique of resistance screening was also studied. According to the range of the values of aphid injury index,the levels of the resistance to the cotton aphid were classified as four grades,namely resistant,mid-resistant,susceptible and highly susceptible.Thirteen resistant varieties such as Duo Mao Zao No.3 and four susceptible varieties such as... |
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