9个紫花苜蓿品种对淹水胁迫的响应及耐涝性评价  

Effects of flooding stress on biological characteristics of different alfalfa varieties and evaluation of their waterlogging tolerance

作　　者：陈小芳 徐化凌 王瑞香 李军 崔慧慧 毕云霞 宁凯 于德花 CHEN Xiao-fang;XU Hua-ling;WANG Rui-xiang;LI Jun;CUI Hui-hui;BI Yun-xia;NING Kai;YU De-hua(Academy of Dongying Agricultural Sciences,Dongying 257091,China;Lijin County Natural Resources and Planning Bureau,Dongying 257400,China;Dongying Agricultural Comprehensive Service Center,Dongying 257091,China;Lijin County Agricultural Comprehensive Service Center,Dongying 257400,China)

机构地区：[1]东营市农业科学研究院,山东东营257091 [2]利津县自然资源和规划局,山东东营257400 [3]东营市农业综合服务中心,山东东营257091 [4]利津县农业综合服务中心,山东东营257400

出　　处：《草原与草坪》2024年第2期155-163,共9页Grassland and Turf

基　　金：山东省牧草产业技术体系东营综合试验站;山东省牛产业技术体系东营综合试验站;山东省重点研发计划良种工程“耐盐优质新型牧草突破性新品种选育”项目。

摘　　要：【目的】筛选淹水胁迫下适应性相对较强的紫花苜蓿(Medicago sativa)品种,为紫花苜蓿耐涝性研究提供基础材料。【方法】采用套盆法模拟淹水条件,探究淹水对紫花苜蓿苗期生物学特性的影响。【结果】淹水7 d时,紫花苜蓿株高均高于对照,巨能7耐湿、角斗士、巨能801、WL440HQ、WL525HQ和WL656HQ品种的茎干重、叶干重和地上干生物量都高于对照,巨能995、角斗士、巨能801、WL525HQ、WL656HQ、WL712的主根长高于对照。淹水胁迫至第14 d时,仅有2~3个品种主根长、茎干重、叶干重和地上干生物量等指标高于对照。【结论】采用主成分分析法和隶属函数法进行耐涝性综合评价,巨能995、WL440HQ、角斗士等品种耐涝能力较高。【Objective】In order to determine the relatively strong adaptability of alfalfa(Medicago sativa)variet⁃ies under flooding stress.【Method】The pot covering method was used to simulate the flooding conditions and ex⁃plore the impact on the biological characteristics of alfalfa seedlings,in order to provide basic materials for the study of alfalfa waterlogging tolerance.【Result】The results showed that the plant height of alfalfa was higher than that of control after 7 days of flooding.The stem dry weight,leaf dry weight and aboveground dry biomass of Juneng 7,gladi⁃ator,Juneng 801,WL440HQ,WL525HQ and WL656HQ were higher than those of control.The main root length of Juneng 995,gladiator,Juneng 801,WL525HQ,WL656HQ and WL712 were higher than that of control.At the 14th day of flooding stress,only 2⁃3 varieties had higher main root length,stem dry weight,leaf dry weight and aboveg⁃round dry biomass than the control.【Conclusion】The comprehensive evaluation of waterlogging tolerance was car⁃ried out by principal component analysis and subordinate function method.The waterlogging tolerance of Juneng 995,WL440HQ,gladiator and other varieties was higher.

关 键 词：淹水胁迫 紫花苜蓿 耐涝性评价 

分 类 号：S541[农业科学—作物学]