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在国内外对引起小麦穗腐(赤霉病)的致病菌种群组成和致病群型做了许多研究,并在致病菌种群组成、优势种分布方面有了明确结论。存在的问题之一是对致病型仍有不同的看法。研究其菌系不仅是一个基础理论问题,也是解决抗病育种和搞好品种布局的生产问题。近几年来,我们从事这项研究,目的是为了摸清引起本省小麦穗腐致病菌种群、优势种分布和致病型,以便为小麦抗病育种和品种布局提供更充分的理论依据。我们的做法是,按县分别采样,顺序编码,于4℃冰箱保存。一九七八年采集25县900多个标样。一九七九年又采集到20县。采用室内分离培养鉴定和田间穗期接种测定两步法。室内
At home and abroad, many studies have been done on the composition and pathogenicity of pathogenic bacteria causing wheat ear rot (scab), and a clear conclusion has been drawn on the composition of pathogenic bacteria and the distribution of dominant species. One of the problems is that there is still a different view of the disease type. Studying its strain of bacteria is not only a basic theoretical issue, but also a production problem to solve the disease-resistant breeding and improve the variety distribution. In recent years, we engaged in this study, the purpose is to find out the cause of wheat spike pathogen population, dominant species distribution and pathogenicity in order to provide a more sufficient theoretical basis for wheat disease-resistant breeding and variety distribution. Our approach is, respectively, by county sampling, sequential coding, stored at 4 ℃ refrigerator. In 1978 collected 25 count more than 900 standard samples. In 1979, another 20 counties were collected. Using indoor separation culture identification and field spike inoculation determination two-step method. indoor