内蒙古农牧交错区沙蒿根围AM真菌物种多样性

doi:10.3969/j.issn.1000-1565.2012.05.011

摘要/Abstract

摘要： 2009年4月、7月和10月分别在内蒙古农牧交错区元上都、黑城子和大河乡样地采集沙蒿(Artemisia sphaerocephala)根围土壤样品,利用形态学和微形态学特征分离鉴定沙蒿根围AM真菌种类,研究了AM真菌物种多样性.共分离鉴定出AM真菌3属20种,其中盾巨孢囊霉属(Scutellospora)2种,无梗囊霉属(Acaulospora)4种,球囊霉属(Glomus) 14种.3属AM真菌在3个样地均有分布.3个样地共同优势种是黑球囊霉(G.melanosporum)和网状球囊霉(G.reticulatum).AM真菌物种丰度、香浓-威纳指数和均匀度在时间上表现为4月＜7月＜10月,空间上表现为元上都＜黑城子＜大河乡.扫描电镜下不同属种孢子表面纹饰特征差异明显,可作为AM真菌分类的参考依据.

关键词: AM真菌, 物种多样性, 扫描电镜, 沙蒿, 农牧交错区

中图分类号:

Q949.3

贺学礼,郭辉娟,王银银,赵丽莉. 内蒙古农牧交错区沙蒿根围AM真菌物种多样性[J]. 河北大学学报(自然科学版), 2012, 32(5): 506-514.

HE Xueli,GUO Huijuan,WANG Yinyin,ZHAO Lili. Species diversity of arbuscular mycorrhizal fungi in the rhizosphere of Artemisia sphaerocephala in Inner Mongolia[J]. Journal of Hebei University (Natural Science Edition), 2012, 32(5): 506-514.

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