土壤水分和接种VA菌根对构树根系形态和分形特征的影响  

Effects of Soil Moisture and VAM Inoculation on Root Morphology and Fractal Character in Broussonetia papyrifera

作　　者：宋会兴[1,2] 钟章成[1] 王开发[1,3] 

机构地区：[1]西南大学生命科学学院三峡库区生态环境教育部重点实验室 [2]曲阜师范大学生命科学学院曲阜273165 [3]第三军医大学基础医学部重庆400038

出　　处：《林业科学》2007年第7期142-147,共6页Scientia Silvae Sinicae

基　　金：国家自然科学基金(30370279;30670334)。

摘　　要：Effects of Glomus mosseae and water stress on morphology and fractal characteristic of root system in Broussonetia papyrifera were studied in this paper based on scanner-based image analysis. The results showed that drought and VAM inoculation had a large, significant effect on plant development. Biomass, total length, surface area, volume, number of root nodes, average diameter and fractal dimension of root system in B. papyrifera decreased with the reduction of soil moisture, while they were increased by VAM inoculation. Special root length in non-AM plants increased when soil moisture was reducing, but it was decreased by VAM inoculation. It was concluded that G. mosseae inoculation improved the drought resistance of B. papyrifera, especially in moderate stressed conditions. The contribution of AM symbiosis to plant to avoid the stress or to increase its tolerance might be the result of modification of root morphology and fractal character.Effects of Glomus mosseae and water stress on morphology and fractal characteristic of root system in Broussonetia papyrifera were studied in this paper based on scanner-based image analysis. The results showed that drought and VAM inoculation had a large, significant effect on plant development. Biomass, total length, surface area, volume, number of root nodes, average diameter and fractal dimension of root system in B. papyrifera decreased with the reduction of soil moisture, while they were increased by VAM inoculation. Special root length in non-AM plants increased when soil moisture was reducing, but it was decreased by VAM inoculation. It was concluded that G. mosseae inoculation improved the drought resistance of B. papyrifera, especially in moderate stressed conditions. The contribution of AM symbiosis to plant to avoid the stress or to increase its tolerance might be the result of modification of root morphology and fractal character.

关 键 词：水分胁迫 摩西球囊霉 构树 根系形态 分形维数 

分 类 号：S718.81[农业科学—林学]