大豆科学2023，Vol.42Issue(6)：701-709,9.DOI:10.11861/j.issn.1000-9841.2023.06.0701
大豆种质资源芽期耐旱鉴定及综合评价
Identification and Comprehensive Evaluation of Drought-tolerance Soybean Germplasm Resources at Bud Stage
摘要
Abstract
In order to screen the drought-tolerant germplasm resources of soybean at germination stage,this study used 20％polyethylene glycol(PEG-6000)to simulate drought stress to identify the drought tolerance of 258 soybean resources at germination stage from home and abroad.The germination potential,germination rate,germination index,relative germination potential,relative germination rate,relative germination index and drought damage rate were used as identification indexes.Finally,the drought tolerance of soybean resources at germination stage was evaluated and clustered by membership function value.The results showed that there were significant differences among the stress treatments,and the correlation analysis showed that the membership function was positively correlated with each index,and the drought injury rate was negatively correlated with each index.According to the membership function,258 germplasm resources were divided into 4 categories:There were 9 varieties(lines)of drought-tolerant,55 varieties(lines)of sub-drought-tolerant,186 varieties(lines)of sub-sensitive and 8 varieties(lines)of sensitive.The 258 materials were classified into 3 types by the subordinate function cluster analysis:17 tolerant materials,such as Jilin xiaolidou 7,Dongda 2,etc.,which accounted for 6.59％of the total materials,99 intermediate materials,for example,Kenfeng 13 and Kennong 18 accounted for 38.37％of the total materials,and 142 sensitive materials,such as Heihe 38 and Longdou 2,accounted for 55.04％of the total materials.The results will provide suitable germplasm resources for drought-tolerant breeding and genetic mechanism of drought-tolerant in bud stage.关键词
大豆芽期/耐旱/种质资源/隶属函数/聚类分析Key words
soybean bud stage/drought tolerance/germplasm resources/subordinate function/cluster analysis引用本文复制引用
赵萌,杨帅,蒋洪蔚,谢建国,周若,郑莉萍,孟凡凡,王曙明..大豆种质资源芽期耐旱鉴定及综合评价[J].大豆科学,2023,42(6):701-709,9.基金项目
吉林省农业科技创新工程人才基金—研究生基金(c12040414) （c12040414）
现代农业产业技术体系建设专项(CARS-04-PS11) （CARS-04-PS11）
2019年度省科研院所引进高层次科技创新人才资助计划 （）
吉林省农业科技创新工程项目(CXGC2022DX002) （CXGC2022DX002）
中青年科技创新创业卓越人才项目:大豆高产优质育种团队(20220508105RC). （20220508105RC）
