南京林业大学学报(自然科学版) ›› 1992, Vol. 16 ›› Issue (04): 30-34.doi: 10.3969/j.jssn.1000-2006.1992.04.006

• 研究论文 • 上一篇    下一篇

杉木缩顶病病原菌孢子萌发和菌丝生长的研究

沈伯葵;魏初奖;朱克恭;方光明;李桂英;兰林江;李振华;潘长征   

  1. 南京林业大学;南京林业大学;南京林业大学;江西省德兴市林业局;江西省德兴市林业局;江西省德兴市林业局;江西省德兴市林业局;江西省德兴市林业局
  • 出版日期:1992-12-18 发布日期:1992-08-18

A STUDY ON BIOLOGICAL FEATURES OF PATHOGEN MOP-TOP DISEASE OF CHINESE FIR

Shen Bokui Wei Chujiang Zhu Kegong(Nanjing Forestry University)Fang Guangming Li Guiying Lan Linjiang Li Zhenhua Pan Changzheng   

  1. Forestry Bureau of Dexing County, Jiangxi
  • Online:1992-12-18 Published:1992-08-18

摘要: <正>杉木缩顶病病原菌主要是Pestalotiopsis guepinii (Desm.) Stey. ,其次是Fusarium oxysporum Schlech。这两种菌菌丝生长的最适温度和pH值的范围是28~30℃和pH6~7。它们的分生孢子萌发与菌丝生长所需的最适温度相似。P.guepinii和F.oxysporum孢子萌发的相对湿度在95%以上是必需的。两者都以天冬酰胺作氮源生长最好且优于PSA;P.guepinii以麦芽糖为碳源生长最好但不及PSA,F.oxysporum在可溶性淀粉和甘露醇为碳源的培养基上生长优于PSA;杉木针叶及树皮汁培养基均不及PSA。两者在上述培养基上菌落颜色有很大的变化。

Abstract: The causes of mop-top disease of Chinese fir (Cunninghamia lanceolata (lamb. ) Hook. ) are fungi (Pestalotiopsis guepinii (Desm. ) Stey. , and then Fusarium oxysporum Schlech). The optimum temperatures and pH range for myceliae growth of P. guepinii and F. oxysparum are 25 to 28 C and 6-7 respectively , and the optimum temperature and pH for conidia germination are similar to the myceliae growth. The optimum relative humidity over 95% were found to be favourable to the spore germination of P. guepinii and F. oxysporum respectively.