论文部分内容阅读
在马铃薯癌肿病病原菌的发育史中,形成休眠孢子囊是由于不利因子(变动的气候条件、缺乏寄主、应用化学药品等)影响的一种保护性反应。休眠孢子囊按照生理学的成熟等级分为一年的、二年的和多年的。当条件最适宜而无寄主时,个别孢子囊在土壤中达10—30年而不失去活性(M.Pratt,1976)。实验室测定病原体活性多半采用质壁分离法,该方法由苏联的研究家们提出,其依据是:活的原生质比较易于渗水而对溶质有阻留作用(克·耶·沙利阔夫,1951,1954;
In the developmental history of potato cancer pathogenic pathogens, the formation of resting sporangia is a protective response due to adverse factors (variable climatic conditions, lack of host, applied chemicals, etc.). Dormant sporangia according to the physiological maturity level is divided into a year, two years and years. Individual sporangia accumulate in the soil for up to 10-30 years without loss of activity when the conditions are most favorable without hosts (M. Pratt, 1976). Laboratory tests for pathogen activity are mostly based on plasmolysis, a method proposed by Soviet researchers based on the fact that living protoplasts are more permeable to water and have a barrier to solute (Kjell-Salichev, 1951 , 1954;