艾纳香丛枝菌根与土壤因子的相关性

发布时间：2018-04-29 20:43

本文选题：艾纳香 + 丛枝菌根真菌　；参考：《西南农业学报》2017年04期

【摘要】：【目的】探明艾纳香根系侵染特性及其与土壤因子的关系。【方法】采用湿筛倾析-蔗糖离心法进行孢子分离,根据《VA菌根鉴定手册》和国际丛枝菌根真菌保藏中心提供的种描述及图片,对贵州兴义市南盘江镇的歪染村和田房村艾纳香的根系及土壤进行AM真菌分离鉴定。【结果】歪染村和田房村艾纳香根系及土壤共分离鉴定出AM真菌4属53种,其中,球囊霉属25种,无梗囊霉属8种,巨孢囊霉属1种,盾巨孢囊霉属1种;歪染村样地中鉴定AM真菌2属35种,其中球囊霉属22种,无梗囊霉属13种,两样地的优势属均为球囊霉属。【结论】不同样地AM(Arbuscular Mycorrhizal)真菌种类分布有明显差异,AM真菌能与艾纳香根系共生形成疆南星型丛枝菌根;秋季AM真菌孢子密度明显高于夏季,但夏秋两季菌根侵染率无显著差异。AM真菌侵染率与土壤pH呈显著正相关(r=0.549,P0.05),AM真菌的空间分布及其侵染特性与土壤环境密切相关。
[Abstract]:[objective] to investigate the characteristics of root infection and its relationship with soil factors. [methods] Spore separation was carried out by wet sieve tilting and sucrose centrifugation. According to the VA mycorrhizal Identification Manual and the species description and pictures provided by the International arbuscular mycorrhizal Fungi Preservation Center, The root system and soil of Ainaxam in Panjiang Town, Xingyi City, Guizhou Province were isolated and identified by AM fungi isolation. [results] A total of 53 species of AM fungi belonging to 4 genera were isolated from the root system and soil in Hetian Fang Village and Jiaoran Village, Guizhou Province, China. 25 species of the genus Ballosae, 8 species of the genus Armillaria, 1 species of the genus megacystis and 1 species of the genus Cystis, and 35 species of AM fungi belonging to 2 genera were identified in the village of askew staining, of which 22 species were the Balloon Fungi and 13 species were the Astragalus. [conclusion] there are significant differences in the distribution of AM(Arbuscular mycorrhizal (AM(Arbuscular mycorrhizal) fungi between the two plots, and the spore density of AM fungi in autumn is significantly higher than that in summer. However, there was no significant difference in mycorrhizal infection rate between summer and autumn. There was a significant positive correlation between mycorrhizal infection rate and soil pH. The spatial distribution and infection characteristics of mycorrhizal fungi were closely related to soil environment.
【作者单位】：贵州师范大学生命科学学院;兴义民族师范学院;兴义市中药材和茶叶技术推广站;
【基金】：贵州省教育厅自然科学研究项目“艾纳香根际AM真菌多样性研究”[黔教合KY字(2014)293]
【分类号】：S154.3;S567.239

【相似文献】