论文部分内容阅读
收集侧柏21个种源,经繁育定植后,连续3年逐年测定其对侧柏绿胶杯菌的抗性。其分析结果表明,不同地理种源侧柏之间其生长状况的优劣与抗病性关系不大,同一种源内生长势良好者其感病指数较轻;种源之间对绿胶杯菌的抗性存在有明显的差异,其中抗性较强的有河北民寿、山西晋城、贵州黎平、山西交城和陕西华阴种源,但是均未达到可以用以进行病害防治的高度抗病的程度。
21 species of arborvitae were collected and their resistance to P. platyphylla was determined year after year for three consecutive years after their breeding. The results showed that there was no significant correlation between the growth status of Platycladus orientalis and the disease resistance in different geographical provenances, and the susceptibility index was lower in those with good growth within the same source. There were significant differences in resistance among them. Among them, Hebei Shoushun, Shanxi Jincheng, Guizhou Liping, Shanxi Jiaocheng and Shaanxi Huayin were the most resistant ones, but none of them were highly resistant to disease control Degree.