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生产实践和科学实验证明,不同棉花品种对枯萎病的抗性存在着明显差异,但这种差异在鉴定过程中往往受病菌致病力、病圃的温度、水分、植株的营养条件、生育期以及人为因素的影响。因此,成株期鉴定中建立适宜的病圃是一个非常重要的问题。依据多年来田间成株期鉴定实践的体会,应注意以下问题。一、病圃的建立和田间试验设计:病圃是选育抗枯萎病棉花品种的必要条件。但是,要使病圃满足育种要求,达到理想程度则并不是一件轻而易举的事情。多年来的实践使我们认识到一个理想的病圃应该是:致病力强(即所用病菌的致病力是将来选育出的品种推广种植
Production practices and scientific experiments show that there are significant differences in the resistance of different cotton varieties to Fusarium wilt, but this difference is often affected by the pathogenicity of pathogenic bacteria, the temperature of the nursery, the water content, the vegetative conditions of the plant, the growth period As well as human factors. Therefore, it is a very important issue to establish appropriate nursery in the identification of adult plants. Based on years of field experience of identification of adult plants should pay attention to the following questions. First, the establishment of nursery and field trial design: Nursery is the necessary conditions for breeding varieties resistant to Fusarium Wilt. However, it is not easy to get the nursery to meet the breeding requirements and achieve the desired level. Years of practice has led us to realize that an ideal nursery should be: strong pathogenicity (that is, the pathogenicity of the bacteria used in the future breeding varieties to promote the planting