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湿地松对褐斑病的抗性随植株年龄的增长而提高,一年生以下幼苗的病害症状以叶枯为主,二年生以上幼树则多在针叶上出现病斑。选壮苗和施用混合肥可提高一年生以下幼苗的抗病性。 用高抗、中抗和感病湿地松个体的嫩枝作接穗,一般实生苗湿地松作砧木,无性系植株的抗性和原来母株的抗性相一致,其发病程度还受到砧木感病性的影响。 针叶组织抽提液的缓冲容量与针叶病斑数显著相关。高抗植株和感病植株的抽提液对褐斑病菌的产孢影响有显著的差异。
The resistance of P. elliottii to brown spot increased with the increase of plant age. The disease symptoms of seedlings under one year old were mainly leaf blight, while those of saplings more than two years old appeared spot on the needle. Select strong seedlings and application of fertilizer can improve the resistance of young seedlings below the annual. With high resistance, resistance and susceptibility to individual individuals of the spruce pine sclerotium, the general seedling wetlands for the rootstocks, clones and the resistance of the original mother plant resistance consistent, the extent of its incidence by the stock of rootstocks Sexual effects. The buffer capacity of coniferous tissue extract was significantly correlated with the number of conifers. There was a significant difference in the sporulation of Alternaria solani between the high resistant and the susceptible plants.