46份甜荞种质萌发期耐盐资源评价与筛选  

Evaluation and Screening of Salt Tolerance of 46 Fagopyrum esculentum Moench.Germplasm at the Germination Stage

作　　者：李春花 加央多拉 吴晗 孙墨可 马飞跃 梁秀雪 李晗 张曼[1] 田娟[1] 王艳青[2] 任长忠[1] LI Chunhua;Jiayangduola;WU Han;SUN Moke;MA Feiyue;LIANG Xiuxue;LI Han;ZHANG Man;TIAN Juan;WANG Yanqing;REN Changzhong(Jilin Baicheng Academy of Agricultural Sciences,Baicheng Jilin 137000,China;Biotechnology and Germplasm Resources Institute,Yunnan Academy of Agricultural Sciences/Yunnan Provincial Key Lab of Agricultural Biotechnology/Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation,Ministry of Agriculture and Rural Affairs,Kunming 650205,China)

机构地区：[1]吉林省白城市农业科学院,吉林白城137000 [2]云南省农业科学院生物技术与种质资源研究所/云南省农业生物技术重点实验室/农业农村部西南作物基因资源与种质创制重点实验室,昆明650205

出　　处：《种子》2024年第5期1-6,98,共7页Seed

基　　金：国家自然科学基金(31860412);白城市指导性科技发展计划项目(202210);财政部和农业农村部“国家燕麦荞麦产业技术体系”(CARS-07)。

摘　　要：盐渍化土壤是我国农业发展的重要后备土壤资源,而筛选耐盐种质是盐渍化农业应用的重要基础。本研究用浓度18‰的NaCl溶液对46份萌发期甜荞种子进行胁迫处理,通过测定发芽率、发芽势、发芽指数以及相对盐害率指标,对甜荞种质进行萌发期耐盐评价与筛选。结果表明,盐胁迫下甜荞萌发期指标遗传多样性丰富,变异系数在48.95%~75.01%之间;聚类分析结果表明,46份甜荞种质可划分为耐盐、中耐盐、不耐盐(敏感、高敏感)三大类群,同时筛选出耐盐种质3份、高敏感种质2份。Salinized soil is an important reserve soil resource for agricultural development in China,and screening salt-tolerant varieties is an important basis for salinized agricultural application.In this study,46 varieties of Fagopyrum esculentum Moench.seeds at germination stage were treated with 18‰NaCl stress.By measuring germination rate,germination potential,germination index and relative salt damage rate,salt tolerance of Fagopyrum esculentum Moench.germplasm at germination stage was evaluated and screened.The results showed that under salt stress,the genetic diversity of germination stage indexes of Fagopyrum esculentum Moench.was abundant,and the coefficient of variation ranged from 48.95%to 75.01%.The results of cluster analysis showed that 46 varieties of Fagopyrum esculentum Moench.could be divided into three categories:salt-tolerant,medium salt-tolerant and sensitive.At the same time,3 varieties with salt-tolerant and 2 varieties with high sensitivity were selected.

关 键 词：甜荞 萌发期 耐盐性 种质资源 

分 类 号：S517[农业科学—作物学]