【摘要】 湿地松根腐病被进一步证实是由Diplodia pinea(Desm.)Kickx所引起,本研究还发现Sphaeropsis Sapinea(Fr.)Dyko＆Sutton也是病原之一.我们所见的S.Sapinea与一般的D.Pinea(异名:S.Sapinea)在形态、培养特性和孢子萌发等方面有明显的差异,可能是这个种的一个变种.这两种菌都能使2年生松苗和16年生生长衰弱的松树死亡.它们对松树的浸染与松毛虫引起的失叶量有密切的关系.更多还原

【Abstract】 Root rot disease of slash pine was further confirmed to be mainly caused by Diphlodia pinea (Desm. ) Kickx. It was also found that Sphaeropsis sapinea (Fr. ) Dyko & Sutton was one of the causal agents. The mentioned 5. sapinea was quite different from the usual D. piuea (synonymy: S. saqinea) in morthology, cultural characters and germination and may be a variety of this species. Inoculation tests showed that both D. pinea and S. sapiuea could make 2-year -old seedlinks as well as 16-year-old weakened uees of slash pine dead, and that the infection of the pathogens was closely related to the defoliation of slash pine caused by Dendrolinus punctatus.更多还原