四种木材腐朽菌的生物学特性及对白桦易腐和抗腐群体的筛选
首发时间:2006-10-19
摘要:本文以来自黑龙江省带岭林业局凉水林场的300株天然成熟白桦为材料,采用四种木材腐朽菌对其进行木材腐朽处理,重量损失法测定各木腐菌对白桦的生物降解能力。结果表明在四种木材腐朽菌中,彩绒革盖菌和白囊耙齿菌的生长速度最快,木蹄层孔菌中等,黄伞最慢。彩绒革盖菌、木蹄层孔菌、黄伞的生长速度和它们对白桦的木材降解能力呈正相关,白囊耙齿菌呈负相关。经白囊耙齿菌、木蹄层孔菌、黄伞降解的白桦木材重量损失率株间差异极显著,呈正态分布;经彩绒革盖菌降解的白桦木材重量损失率株间差异不显著,呈偏态分布。选择重量损失率最大和最小的20株(彩绒革盖菌为10株)白桦组成易腐和抗腐群体,群体间差异极显著。这一结果为进一步探讨易腐和抗腐白桦群体的木材化学、细胞及遗传特性提供有用的信息。
关键词: 白桦 木材腐朽菌 易腐群体 抗腐群体
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The selection of resistant and sensitive populations of white birch by four wood rot fungi and the fungi’s culture characters
Abstract:In this paper, 300 trees of white birch from natural stands of Liangshui forest farm in Dailing forestry bureau of Heilongjiang Province were used as the materials, of which four wood rot fungi were adopted to treat the wood samples, and the wood decomposed ability of the fungi was measured by weight loss method separately. The result showed that the growth rate of Coriolus versicolor and Irpex lacteus’s were the fastest among the four fungi, Fomes fomentarius in the middle and Pholiota adipose was the slowest. The wood decomposed ability by the fungi had positive correlations with the growth rate of Coriolus versicolor, Fomes fomentarius and Pholiota adipose, and a negative correlation with Irpex lacteu. There was significant difference among the individuals in wood weight loss decaying by Irpex lacteus, Fomes fomentarius and Pholiota adipose, which showed normal distributions, and no statistically variation by Coriolus versicolor, which showed an abnormal distribution. The decay sensitive and resistant populations in 20 individuals (10 individuals for Coriolus versicolor) of white birch were respectively selected according to the highest and lowest wood weight loss, between which great differences could be seen. This result provides useful information for making further study in wood chemistry, cellular and genetic properties between two populations of white birch in future.
Keywords: White birch, Wood rot fungi, Decay sensitive population, Decay resistant population
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No.8837806521161252****
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