植物学报 ›› 2025, Vol. 60 ›› Issue (2): 204-217.DOI: 10.11983/CBB24093  cstr: 32102.14.CBB24093

• 研究论文 • 上一篇    下一篇

基于根系表型性状的蚕豆耐盐碱性鉴定与综合评价(长英文摘要)

范惠玲1,3, 路妍3, 金文海1, 王慧1, 彭小星1, 武学霞1,*(), 刘玉皎1,2,*()   

  1. 1青海大学, 西宁 810016
    2青藏高原种质资源研究与利用实验室, 西宁 810016
    3河西学院, 张掖 734000
  • 收稿日期:2024-06-16 接受日期:2024-10-14 出版日期:2025-03-10 发布日期:2024-10-16
  • 通讯作者: 武学霞,刘玉皎
  • 基金资助:
    国家食用豆产业技术体系建设专项(CARS-08);国家自然科学基金(42267008);青海大学两级财政科研实力提升项目-青年创新人才支持计划(2025KTSQ12);青海省重点研发与转化计划(2022-NK-109)

Identification and Comprehensive Evaluation of Faba Bean Salt-alkali Tolerance Based on Root Phenotypic Traits

Huiling Fan1,3, Yan Lu3, Wenhai Jin1, Hui Wang1, Xiaoxing Peng1, Xuexia Wu1,*(), Yujiao Liu1,2,*()   

  1. 1Qinghai University, Xining 810016, China
    2Qinghai-Tibet Plateau Germplasm Resources Research and Utilization Laboratory, Xining 810016, China
    3Hexi University, Zhangye 734000, China
  • Received:2024-06-16 Accepted:2024-10-14 Online:2025-03-10 Published:2024-10-16
  • Contact: Xuexia Wu, Yujiao Liu

摘要: 蚕豆(Vicia faba)耐盐碱性种质鉴定为挖掘耐盐碱基因和选育耐盐碱品种奠定基础, 对盐碱地利用具有重要意义。利用8 g∙L-1混合盐碱溶液(NaCl、Na2CO3和Na2SO4, 质量比为9:1:1, pH9.25)对399份国内外蚕豆种质在萌发期进行胁迫处理, 并测定了3个发芽指标和13个根系指标, 采用相关性、主成分、隶属函数和系统聚类分析, 对各种质的耐盐碱性进行综合评价。结果表明: (1) 在盐碱胁迫下, 根系交叠数受到的影响最大, 关节点次之, 而根平均直径较稳定; (2) 交叠数与总连接点数之间, 分叉数与交叠数、总连接点数之间等大部分指标间均呈极显著正相关(P<0.01); 而根平均直径与根总数量、根尖数量、根总长、端点数、关节点数、连接数、分叉数、交叠数和总连接点数之间呈极显著负相关(P<0.01); (3) 根总表面积、根总投影面积、根总长和根总体积可作为蚕豆萌发期耐盐碱性鉴定的适宜指标; (4) 筛选出2份耐碱盐种质H0000809和H0000653, 2份盐碱敏感种质H0001714和H0002622; (5) 399份蚕豆种质可分为4类, 第I类为耐盐碱种质, 占0.75%; 第II类为中耐盐碱种质, 占8%; 第III类为弱耐盐碱种质, 占52.88%; 第IV类为不耐盐碱种质, 占38.35%。综上, 该研究明确了各指标的变异程度和相关性, 确定了耐盐碱性鉴定的关键指标, 筛选出的极端材料可用于蚕豆耐盐碱机理研究和耐盐碱基因挖掘。

关键词: 蚕豆, 萌发期, 盐碱胁迫, 耐盐碱种质鉴定, 综合评价

Abstract: INTRODUCTION: Identification of salt-alkali tolerant germplasm in faba bean lays the foundation for the exploration of salt-alkali tolerant genes and for the selection and breeding of salt-alkali tolerant varieties, which is of great significance for the utilization of saline-alkali land. RATIONALE: Most of the studies on the salt-alkali tolerance of faba beans were focused on the morphological and physiological traits of the aboveground parts, while there are few studies on the phenotypic traits of the roots. The root plays a crucial role in resisting salt-alkali stress. Deep research on the relationship between the phenotypic traits of the root and the salt-alkali tolerance of faba beans will help to comprehensively understand the physiological mechanism of the salt-alkali tolerance. RESULTS: The results showed that: (1) Under salt-alkali stress, the root overlap number was mostly affected, it was followed by the coila number, while the average diameter of root was affected slightly; (2) Between the overlap number and total number of connection points, among the bifurcation number and the overlap number and total number of connection points, most of indicators were significant positively correlation (P<0.01), while there were significant negatively correlation (P<0.01) among the average diameter of root and total number of root, the number of root tip, total length of root, endpoint number, coila number, linking number, bifurcation number, overlap number and total number of connection points; (3) Total root surface area of root, total projected area of root, total length of root and total volume of root could be used as the key indicators to identify the salt-alkali tolerance of faba bean during the germination period; (4) Two salt-alkali tolerant accessions H0000809 and H0000653, and two salt-alkali sensitive accessions H0001714 and H0002622 were screened out; and (5) The 399 faba bean accessions were divided into 4 groups: group I, salt-alkali tolerance germplasm, accounting for 0.75%; group II, moderately salt-alkali tolerant germplasm, accounting for 8%; group III, weakly saline-tolerant germplasm, accounting for 52.88%; and group IV, salt-alkali sensitive germplasm, constituting 38.35%. CONCLUSION: Variation and correlation of each index, and the key indicators used to identify salt-alkali tolerance were determined, extreme materials can be selected and used for future study of salt-alkali tolerance mechanisms in faba bean and the excavation of salt-alkali tolerance genes. Phenotypic differences of faba bean germplasms with different levels of salt-alkali tolerance at different growth stages (A) Root phenotype differences of faba bean germplasms with different levels of salt-alkali tolerance at germination stage (bar=5 cm); (B) Plant phenotype differences of faba bean germplasms with different levels of salt-alkali tolerance at flowering stage (bars=1 cm).

Key words: faba bean (Vicia faba), germination stage, salt-alkali stress, salt-alkali tolerant germplasm identification, comprehensive evaluation