摘要
AM真菌是一类土壤有益微生物,对逆境条件下植物的生长有诸多有益的生理和生态学效应。本文对陕北旱区豆科植物根际AM真菌多样性和定殖状况进行了初步研究,共分离鉴定出4属16种AM真菌,孢子密度平均为170,8个／100g土,总定殖率高达66．8%。AM真菌多样性和定殖受宿主植物、土壤因子和地理环境等条件的影响,其不同结构的定殖率有明显差异。
Arbuscular mycorrhizal (AM) fungi constitute a major component of rhizosphere microorganisms flora in natural ecosystems and play many physiological and ecological effects to plant growth under adverse stress conditions. The preliminary study of the diversity and colonization of AM fungi from legume plants in arid region of northern Shaanxi had been conducted. 4 genera and 26 species of AM fungi separated from soil samples. The average spore density is 170. 8/100g soil, the total colonization rate reaches 66. 8%. The diversity and colonization of AM fungi is closely related to host plant,soil factors and geographical environments. The colonization rate of different structures of AM fungi is significant differences.
出处
《西北农业学报》
CAS
CSCD
北大核心
2005年第6期128-131,共4页
Acta Agriculturae Boreali-occidentalis Sinica
基金
国家自然科学基金(40471075)教育部留学回国人员科研启动基金(教外司留[2003]14号)
