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中棉、海岛棉及陆地棉是测定棉花枯萎病菌生理型的三大棉种.1972年冬季,全国棉花枯萎病菌生理型试验中曾经对中棉品种2个、海岛棉品种1个及陆地棉品种7个用76个菌系进行接种.其结果,中棉受苗病干扰较烈,未能据以区分病菌生理型.当时仅根据各菌系在海岛棉、陆地棉品种52—128、中棉所三号及岱字15号上的致病力,区分为5个致病类型.1973年春,在上述试验的基础上,继续用8个中棉品种、11个海岛棉品种及6个陆地棉品种进行试验.其目的在于选择具有鉴别能力的品种,特别是中棉及海岛棉品种,以供今后鉴定生理型之用.试验结果报告如下:
Cotton, sea-island cotton and Upland cotton were the three major cotton species for the determination of the physiological types of Fusarium oxysporum f.sp. f. In the winter of 1972, two cotton varieties, one island cotton and one upland cotton variety 7 inoculation with 76 strains of the results of the cotton seedling disease caused by strong interference, failed to distinguish between pathogenic bacteria type was based only on the bacterial strains in the island cotton, upland cotton varieties 52-128, cotton On the 3rd and Dai word on the pathogenicity of 15, divided into five types of pathogenic.In the spring of 1973, on the basis of the above test, continue with eight varieties of cotton, 11 island cotton varieties and six upland cotton Varieties of the test.The purpose is to choose the ability to identify varieties, especially cotton and island cotton varieties for the future identification of physiological type.The test results are reported as follows: