热带农业科学2026，Vol.46Issue(2)：46-53,8.DOI:10.12008/j.issn.1009-2196.2026.02.006
淹水胁迫对不同种源池杉幼苗生物量与根系形态的影响
Effects of Flooding Stress on the Biomass and Root Morphology of Taxodium distichum var.imbricarium Seedlings from Different Provenances
摘要
Abstract
To clarify the response characteristics of biomass and root morphology of Taxodium distichum var.Imbricarium seedlings from different provenances to flooded environments,seedlings of T.distichum var.imbricarium from three prove-nances were used as research materials.Different flooding depths were set to study the effects of flooding stress on the bio-mass and root morphological characteristics of seedlings from different provenances.Meanwhile,principal component analy-sis and membership function analysis were adopted to comprehensively evaluate the flooding tolerance of T.distichum var.imbricarium from different provenances.The results showed that with increasing flooding depth,the plant height,ground di-ameter,root biomass,stem biomass,leaf biomass,total root length,root surface area,and root tip number of T.distichum var.imbricarium from different provenances generally showed a trend of first increasing and then decreasing.For specific root length and specific root surface area,the Anji(Zhejiang Province)provenance showed a trend of first decreasing and then increasing;the Pingxiang(Guangxi Zhuang Autonomous Region)provenance showed an overall decreasing trend;and the Fenyi(Jiangxi Province)provenance had no significant change.Comprehensive evaluation by principal component analysis and membership function analysis indicated that the flooding tolerance of seedlings from the three provenances ranked as follows:Guangxi Pingxiang>Jiangxi Fenyi>Zhejiang Anji.T.distichum var.imbricarium grew well under mild flooding con-ditions,but severe flooding stress would inhibit its growth.The responses of biomass and root systems to flooding stress var-ied among different provenances,and the Pingxiang(Guangxi Zhuang Autonomous Region)provenance had strong flooding tolerance.关键词
淹水胁迫/生物量/根系/综合评价/池杉Key words
flooding stress/biomass/root system/comprehensive evaluation/Taxodium distichum var.imbricarium分类
农业科技引用本文复制引用
韦海航,张莉苑,杨景竣,田红灯,覃奎,刘秀..淹水胁迫对不同种源池杉幼苗生物量与根系形态的影响[J].热带农业科学,2026,46(2):46-53,8.基金项目
广西重点研发计划项目"红树林优异种质资源创制关键技术研究及应用示范"(No.桂科AB24010288) （No.桂科AB24010288）
广西林科院研究团队项目"红树林优异种质资源挖掘与苗木繁育关键技术研究"(No.2024RT27). （No.2024RT27）
