珍稀濒危树种毛红椿虽以有性和无性两种繁殖方式并存，但天然更新过程中有性生殖通常受阻，而以广泛的克隆整合作用通过根蘖苗繁衍后代。本项目以江西九连山国家级自然保护区和江西官山国家级自然保护区毛红椿天然群落为研究对象，以根蘖苗为中心将毛红椿母树及其根系统作为一个整体，着重从土壤性状对毛红椿根蘖苗发生的影响进行分析，研究毛红椿根蘖型根系分布状况、根系构型及根蘖性状发生时内源激素和基因变化，并结合毛红椿共生微生物（AM真菌）群落多样性及功能多样性分析，揭示毛红椿根蘖性状发生的生理遗传机制，完善毛红椿无性繁殖理论，为毛红椿天然林保护提供技术支撑，为珍稀濒危树种种群恢复提供理论指导。

Toona ciliata var. pubescens is a kind of rare and endangered tree, although the sexual and asexual two reproductive modes coexist. Its sexual reproduction is usually blocked in the process of natural regeneration, replaced by a wide range of clonal integration to produce offsprings through root suckers. In this subject, two forest dominant communities of T. ciliata var. pubescens in Guanshan National Nature Reserve and Jiulianshan National Nature Reserve in Jiangxi province are took as the research objects. Taking the root suckers as the center, the trees and its root system as a whole, soil properties as the focus, root distribution and architecture as well as the variety of internal hormone and gene frequency of the creeping-rooted system will be studied. Combined with the analysis of symbiotic microorganisms (AM fungi) species and functional diversity, the physiological and genetic mechanism on sucker character in T. ciliata var.pubescens will be revealed, meanwhile its asexual reproduction theory will be improved. This study will provide technical support for T. ciliata var. pubescens natural forest protection and provide theoretical guidance for the rare and endangered tree species recovery.