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林业科学 ›› 2007, Vol. 43 ›› Issue (07): 142-147.doi: 10.11707/j.1001-7488.20070725

• 研究简报 • 上一篇    下一篇

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

宋会兴1,2 钟章成1 王开发1,3   

  1. 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,北碚400715;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
  • 收稿日期:2006-03-31 修回日期:1900-01-01 出版日期:2007-07-25 发布日期:2007-07-25

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

Song Huixing1,2,Zhong Zhangcheng1,Wang Kaifa1,3   

  1. 1. School of Life Science, Southwest University Key Laboratory of Eco-Environments in Three Gorges Reservoir Region of Ministry of Education Chongqing 400715; 2. School of Life Science, Qufu Normal University Qufu 273165; 3. College of Medicine, Third Military Medical University Chongqing 400038
  • Received:2006-03-31 Revised:1900-01-01 Online:2007-07-25 Published:2007-07-25

关键词: 水分胁迫, 摩西球囊霉, 构树, 根系形态, 分形维数

Abstract:

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.

Key words: water stress, Glomus mosseae, Broussonetia papyrifera, root morphology, fractal dimension