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1633个陆地棉、海岛棉、中棉三大棉种的品种资源和42个生产上推广应用的陆地棉品种,在田间病圃和温室接菌,进行对枯萎病、黄萎病、苗病、铃病的抗病性鉴定。结果表明,中棉对枯萎病、苗病,铃病均有较高的抗病能力,但对黄萎病抗性较差;海岛棉对黄萎病有很高的抗病能力,但对枯萎病、苗病、铃病抗性均较差;陆地棉对棉花4种主要病害的抗病性能高于海岛棉,但低于中棉。经生物统计分析,仅发现陆地棉抗枯萎病与抗苗病之间存在显著的正相关关系。推荐中棉12、陕1155、86-2、86-3、冀合3016五个兼抗枯、黄萎病,并对苗病、铃病也有一定耐病性的品种,供各地多抗育种选用。
1633 cultivars of cotton, sea island cotton and cotton in Central China and 42 cotton varieties of upland cotton which are widely used in production were inoculated in field nurseries and greenhouses for fusarium wilt, verticillium wilt, Disease resistance of bell disease identification. The results showed that cotton had higher resistance to blight, seedling and bollworm but lower resistance to verticillium wilt. Cotton Island had high resistance to Verticillium wilt, but had no effect on wilt The disease resistance, seedling disease and bell disease resistance were poor. The upland cotton had higher disease resistance to four main diseases of cotton than that of island cotton but lower than cotton. According to the biometric analysis, only a significant positive correlation was found between the resistance to blight and the resistance to disease of upland cotton. Sugarcane 12, Shaanxi 1155, 86-2, 86-3 and Jihe 3016 are recommended to be resistant to Verticillium dahliae and Verticillium dahliae, and also have some disease-resistant varieties for seedling disease and bell disease for their selection.