辽宁农业科学Issue(2)：1-8,8.DOI:10.3969/j.issn.1002-1728.2026.02.001
向日葵种质资源苗期耐盐性鉴定评价
Evaluation of Seedling Salt Tolerance Characterization of Sunflower Germplasm Resources
摘要
Abstract
In order to screen salt-tolerant germplasm resources of sunflower,171 sunflower germplasm re-sources were subjected to 0.8%salt stress,and seedling emergence and seedling survival were investigated af-ter 7 d and 14 d of treatment,respectively,and 10 seedling salt-tolerance-related traits were measured in sur-viving plants after 40d of treatment.The results showed that 116 sunflower materials in the test material had more than 60%seedling emergence rate and more than 75%seedling survival rate under salt stress.Salt stress significantly reduced plant height,number of leaves,root length,aboveground fresh weight,root fresh weight,total plant fresh weight,aboveground dry weight,root dry weight,total plant dry weight and root-crown ratio in sunflower seedlings.The 10 individual traits were transformed into four comprehensive indexes by principal component analysis,and their affiliation function values and weights were used to calculate the comprehensive salt tolerance evaluation values of different sunflower germplasm,and one highly sensitive,13 sensitive,57 intermediate,42 salt-tolerant and five highly salt-tolerant germplasm resources were identified by cluster analy-sis,respectively.Stepwise regression analysis was used to select five main evaluation indexes,including plant height,number of leaves,root length,total plant fresh weight and root dry weight,which were used in the construction of a comprehensive mathematical evaluation model.The results of this study laid a foundation for the screening of salt-tolerant germplasm resources and breeding of new varieties of sunflower.关键词
向日葵/种质资源/苗期耐盐/评价体系/隶属函数Key words
Sunflower/Germplasm resources/Seedling salt tolerance/Evaluation system/Membership func-tion分类
农业科技引用本文复制引用
邸佳雪,冯良山,李雨彤,赵明珠,依兵,王德兴,宋殿秀,刘晓宏,曹瑀轩,刘金刚..向日葵种质资源苗期耐盐性鉴定评价[J].辽宁农业科学,2026,(2):1-8,8.基金项目
财政部和农业农村部:国家现代农业产业技术体系建设项目(CARS-14) （CARS-14）
沈阳市科学技术计划—种业创新专项(24-215-2-14) （24-215-2-14）
沈阳市重点研发计划项目(23-409-2-06) （23-409-2-06）
辽宁省农业科学院院长基金(2023MS0505 （）
2024YQ0403) （）
辽宁省农业科学院学科建设(2025XKJS8508) （2025XKJS8508）
