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两种杨树树皮内生真菌多样性及优势种群动态变化

, PP. 292-298

Keywords: 内生真菌,优势种群,多样性,树皮

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Abstract:

为了解健杨94(转基因抗虫杨94)、三倍体毛白杨2个杨树品种干部树皮内生真菌区系及其优势种群的季节变化情况,本研究利用组织分离法从2个杨树品种996块组织中分离内生真菌1 175株,健杨94和三倍体毛白杨分别分离612、563株。利用形态特征和分子生物学方法鉴定为15个属、35个分类单元,包括担子菌1个分类单元,子囊菌34个分类单元。2个杨树品种内生真菌优势种群包括链格孢、葡萄座腔菌、镰孢属真菌、间座壳属真菌等,其中,仅有链格孢、葡萄座腔菌和桑砖红镰孢是两品种共有的优势种群种类,而且优势种群会随季节变化而变化。在两品种的内生真菌中,链格孢、葡萄座腔菌是最为常见的优势种群。

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