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棉花品种抗性的苗期鉴定方法,以5-10克/尺~2棉籽菌粉接种2寸深土壤,土温23℃左右,土壤湿度在初见病前50-60%,后期70%左右,促进发病加重,缩短鉴定历期,在出苗后25天,可确定不同品种的抗性。七年来利用我省自然气候特点,春、秋季进行苗期抗性鉴定,筛选杭病材料。早期鉴定品系抗性,证明了棉花品种苗期鉴定的抗性与蕾期发病趋势基本一致。
Cotton seedling resistance to seedling identification method, with 5-10 g / ft ~ 2 cottonseed meal inoculated 2 inch deep soil, soil temperature about 23 ℃, soil moisture in the early onset of disease 50-60%, the late 70% , To promote increased incidence and shorten the identification period, 25 days after emergence, to determine the different varieties of resistance. Seven years to make use of the characteristics of our province’s natural climate, spring and autumn seedling resistance identification, screening materials Hang disease. Early identification of lines resistant, proved that the cotton seedling stage identification of resistance and budding trend is basically the same.