| 方菲,贺学礼.旱生条件下柠条锦鸡儿AM真菌生态学研究[J].干旱地区农业研究,2007,(2):201~205 |
| 旱生条件下柠条锦鸡儿AM真菌生态学研究 |
| Ecological research on Arbuscular mycorrhizal fungi from the rhizospere of Caragana korshinskii in Northwest arid region |
| |
| DOI：10.7606/j.issn.1000-7601.2007.02.41 |
| 中文关键词: 柠条锦鸡儿 AM真菌 生态分布 干旱地区 |
| 英文关键词:Caragana korshinskii Arbuscular mycorrhizal fungi ecological distribution arid region |
| 基金项目:国家自然科学基金项目(40471637) |
|
| 摘要点击次数: 384 |
| 全文下载次数: 286 |
| 中文摘要: |
| 通过从分布于山西、陕西和内蒙古三省区12个样地中的柠条锦鸡儿(Caragana korshinskii)根围采集土样和根样,系统研究了柠条锦鸡儿AM真菌种类组成和生态分布。试验结果表明,在已分离鉴定出的12种AM真菌中,球囊霉属(Glomus)6种,无梗囊霉属(Acaulospora)3种,巨孢囊霉属(Gigaspora)1种,盾巨孢囊霉属(Scutellospora)2种,而摩西球囊霉(Glomus mosseae)和缩球囊霉(Glomus constrictum)是优势菌种。AM真菌能与柠条锦鸡儿形成良好的共生结构,AM真菌平均总定殖率59.98%,平均孢子密度为830.59个/100 g土。不同采样地之间的AM真菌种类和分布差异显著。孢子密度与菌丝和总定殖率呈显著正相关;孢子密度与土壤速效N呈极显著正相关,丛枝定殖率与土壤有机质呈显著正相关,总定殖率和菌丝定殖率与土壤pH呈极显著正相关。 |
| 英文摘要: |
| In this investigation we separated 12 AMF species of 4 genera,among which 6 species belong to Glomus,3 species belong to Acaulospora,1 species belongs to Gigaspora,and 2 species belong to Scutellospora.G.constrictum and G.mosseae are dominate species.The total colonization is up to 59.98% and the average spore density is 830.59/100 g soil.The speices and ecological distribution of AM fungi in different sites are notably different.The spore density has a positive correlation with hypha and total colonization rate;moreover it is significantly correlated with soil available N content.Arbuscule and soil organic matter are positively correlated.Total and hypha colonization are positively correlated with soil pH. |
| 查看全文 查看/发表评论 下载PDF阅读器 |