尾叶桉和湿地松对彩色豆马勃的化感作用研究  

Allelopathic Effects of Eucalyptus urophylla and Pinus elliottii on Pisolithus tinctorius

作　　者：林捷[1] 曾任森[2] 石木标[1] 陈湛[1] 梁子恒[1] 

机构地区：[1]华南农业大学食品学院,广东广州510642 [2]华南农业大学热带亚热带生态研究所,广东广州510642

出　　处：《华南农业大学学报》2003年第2期48-50,共3页Journal of South China Agricultural University

基　　金：国家自然科学基金资助项目(39770136);广东省自然科学基金资助项目(960426);中国科学院鹤山丘陵综合试验点开放基金资助项目

摘　　要：宿主植物尾叶桉(Eucalyptusurophylla)和湿地松(Pinuselliottii)的水、乙醇和丙酮提取液在适宜的浓度下均对彩色豆马勃(Pisolithustinctorius)的菌丝生长有促进作用.当培养基中含有2 5mg/mL的尾叶桉根水提取液时,促进作用最强,菌落半径是对照的2倍,尾叶桉茎水提取液在0 5和2 5mg/mL浓度下对菌落半径生长的促进作用分别为56 7%和45 0%,0 5mg/mL的尾叶桉叶片乙醇和丙酮提取液对菌落半径生长的促进作用分别为55 3%和53 0%;湿地松根、茎、皮、针的水提取液在1 0mg/mL浓度下对菌落半径生长的促进作用分别为34 6%、34 3%、44 9%和51 0%.宿主植物的这些水溶性促进物质可以通过水淋溶、根分泌或通过水介质直接输送,从而对菌根菌产生化感促进作用.Aqueous, ethanol, and acetone extracts of Eucalyptus urophylla and Pinus elliottii stimulated the mycelial growth of Pisolithus tinctorius. The stimulation was influenced by concentrations. The stimulatory effects of aqueous and ethanol extracts of E.urophylla decreased with the concentration increase, while those of acetone extract enhanced with the concentration increase. The colony radius of P.tinctorius was enhanced by 100% when treated with 25 mg/mL of aqueous extracts of E.urophylla. Aqueous extracts and ethanol extracts of roots, barks, branches of P.elliottii stimulated the mycelial growth of P.tinctorius at low concentrations, but inhibited the mycelial growth at high concentrations. The aqueous extract of P.elliottii increased the colony radius of P.tinctorius by 51% at a concentration of 10 mg/mL.

关 键 词：尾叶桉 湿地松 彩色豆马勃 化感作用 菌根 宿主植物 

分 类 号：Q948.122.3[生物学—植物学]