种子2026，Vol.45Issue(3)：99-105,7.DOI:10.16590/j.cnki.1001-4705.2026.03.099
111份大豆种质资源苗期耐旱性鉴定
Identification of Drought Resistance in 111 Glycine max Germplasm Resources at the Seedling Stage
摘要
Abstract
Drought is the main abiotic stress that restricts agricultural production.During the seedling stage of Glycine max,plants are extremely sensitive to water stress and drought directly affects plant growth and yield.In order to screen out excellent Glycine max germplasm resources with drought re-sistance,111 domestic and foreign Glycine max germplasm resources were used as materials.The pot weighing method was adopted to set up 2 treatment groups:normal water supply and drought stress.The drought resistance coefficients of 7 traits such as SPAD value,plant height,stem diameter,a-bove-ground fresh weight,above-ground dry weight,underground fresh weight and underground dry weight were measured.Principal component analysis,membership function method and cluster analy-sis were used for comprehensive evaluation.The results showed that all traits were significantly inhib-ited under drought stress,among which the underground fresh weight decreased the most(64.57％)and the coefficient of variation was the highest(28.95％).Through principal component analysis,the 7 related traits were reduced to 4 principal components.Among them,the load of underground fresh weight was the largest and could be used as the core indicator for screening drought-resistant Glycine max germplasm resources.The D value was calculated by membership function for comprehensive e-valuation and classified.The 111 materials were divided into 4 categories:strong drought-resistant type(4.5％),moderate drought-resistant type(47.7％),weak drought-resistant type(41.4％)and sensitive type(6.3％).Among them,numbers N82,N95,N106,N48 and N50 were strong drought-resistant germplasm.关键词
大豆/耐旱性/主成分分析/隶属函数/综合评价Key words
Glycine max/drought tolerance/principal component analysis/membership function/comprehensive evaluation分类
农业科技引用本文复制引用
刘圣,李强,陈海军,董宇恒,冯雪艳,韩雯毓,伊六喜..111份大豆种质资源苗期耐旱性鉴定[J].种子,2026,45(3):99-105,7.基金项目
内蒙古自治区科技计划项目(2025KJHZ0012) （2025KJHZ0012）
内蒙古自治区直属高校基本科研业务费项目(BR231513,BR251304) （BR231513,BR251304）
内蒙古自治区科技创新重大示范工程"揭榜挂帅"项目(2023JBGS0006) （2023JBGS0006）
内蒙古自治区育种联合攻关项目(YZ2023005) （YZ2023005）
