Journal of Henan Agricultural Sciences ›› 2024, Vol. 53 ›› Issue (9): 108-116.DOI: 10.15933/j.cnki.1004-3268.2024.09.011

• Horticulture • Previous Articles     Next Articles

Growth Response and Tolerance Evaluation of 32 Spinach Varieties to Cadmium Stress

MIAO Mingjun1,2,3,LI Jiajia1,LEI Xiaokui1,3,LIN Yang1,3,LIAO Jichao1,ZHONG Jian1,3,LI Ju1,2,3,LI Yuejian1,2,3,CHANG Wei2,3,4   

  1. (1.Horticulture Research Institute,Sichuan Academy of Agricultural Sciences/Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province,Chengdu 610066,China;2.Sichuan Vegetable Engineering Technology Research Center,Chengdu 610066,China;3.Horticultural Crops Biology and Germplasm Enhancement Key Laboratory in Southwest Regions of Ministry of Agriculture and Rural Affairs,Chengdu 610066,China;4.Sichuan Institute of Edible Fungi,Chengdu 610066,China)
  • Received:2024-04-18 Published:2024-09-15 Online:2024-11-04

32 个菠菜品种对镉胁迫的生长响应及耐镉性评价

苗明军1,2,3,李佳佳1,雷晓葵1,3,林杨1,3,廖继超1,钟建1,3,李菊1,2,3,李跃建1,2,3,常伟2,3,4
  

  1. (1.四川省农业科学院园艺研究所/蔬菜种质创新与品种改良四川省重点实验室,四川 成都 610066;2.四川省蔬菜工程技术研究中心,四川 成都 610066;3.农业农村部西南地区园艺作物生物学与种质创制重点实验室,四川 成都 610066;4.四川省食用菌研究所,四川 成都 610066)
  • 通讯作者: 常伟(1974-),男,湖北钟祥人,研究员,硕士,主要从事蔬菜育种与栽培研究。E-mail:471243498@qq.com
  • 作者简介:苗明军(1983-),男,河南漯河人,副研究员,博士,主要从事蔬菜育种与栽培生理研究。E-mail:1224566145@qq.com
  • 基金资助:
    国家现代农业产业技术体系四川大宗蔬菜创新团队资助项目(SCCXTD-2024-5);阿坝州特色产业提质增效关键技术示范与推广项目(2023ZSSFXD13);彭州市蔬菜绿色高效生产关键技术研究与示范项目(2023PZSC0306);成都市蔬菜产业化育苗及绿色高效生产关键技术研究、应用与示范项目(2022-YF09-00051-SN)

Abstract: Cadmium(Cd)is a highly toxic heavy metal element.To identify Cd‑tolerant spinach varieties and screen related identification indexes,and provide a theoretical basis for the selection and breeding of Cd‑tolerant varieties,in the present study,we conducted a hydroponic experiment using 32 spinach varieties in China.The spinach was exposed to Cd stress(Cd concentration of 50 μmol/L)for 20 days,while the other group of plants was treated as a control(Cd concentration of 0 μmol/L).After the plants reached maturity,we measured the agronomic traits and Cd content.The integrated Cd tolerance of each spinach variety was evaluated by principal component analysis,affiliation function analysis,and correlation analysis.The results showed that plant height,root length,underground fresh weight,aboveground fresh weight,aboveground Cd content,underground Cd content and translocation coefficient of the participating varieties under Cd stress conditions were significantly different from the control.Under Cd stress,the growth and biomass accumulation of spinach were inhibited,and the indicators of each trait decreased significantly.The order of average reduction of each agronomic index was aboveground fresh weight>plant height>underground fresh weight>root length.The principal component analysis of Cd stress tolerance index of the seven indexes was performed,and three principal components were selected,with a cumulative variance contribution of 81.552%;The composite evaluation value(D value)showed highly significant positive correlations(P<0.01)with plant height,underground fresh weight,aboveground fresh weight,aboveground Cd content,and translocation coefficient,which can be used as the preferred indexes for the evaluation of Cd tolerance in spinach.Based on the principal component analysis,we classified the 32 spinach varieties into three categories:Cd‑tolerant,moderate,and Cd‑sensitive varieties.Among the varieties tested,Jin’ge and Micro orchid exhibited strong Cd tolerance,while Desai 176 was found to be Cd‑sensitive.

Key words: Spinach, Cd tolerance, Cd uptake, Affiliation function method, Principal component analysis, Comprehensive evaluation

摘要: 镉(Cadmium,Cd)是一种剧毒重金属元素,鉴定耐Cd菠菜品种并筛选相关鉴定指标,为耐Cd菠菜品种的选育提供理论依据。选用国内32个菠菜品种,采用Hoagland水培溶液加入CdCl2·2.5H2O模拟大田试验,在Cd胁迫(Cd浓度50 μmol/L)和对照(Cd浓度0 μmol/L)处理20 d,待菠菜成熟期,测定其农艺性状和Cd含量。通过主成分分析、隶属函数分析、相关性分析评价各菠菜品种的综合耐Cd能力。结果表明,Cd胁迫条件下参试品种的株高、根长、地下部鲜质量、地上部鲜质量、地上部Cd含量、地下部Cd含量和转运系数与对照相比均存在显著差异;Cd胁迫下,菠菜的生长、生物量积累均受到抑制,各性状指标均明显下降,各农艺指标平均降幅排序依次为地上部鲜质量>株高>地下部鲜质量>根长。对7个指标的耐Cd系数进行主成分分析,选择了3个主成分,累计方差贡献率达81.552%;综合评价值(D值)与株高、地下部鲜质量、地上部鲜质量、地上部Cd含量、转运系数均呈极显著正相关关系(P<0.01),这些指标可以作为菠菜耐Cd能力评价的首选指标。根据主成分分析,将32份菠菜品种划分为耐Cd性强、中等和Cd敏感型3种类型,金格和微兰为耐Cd性强品种,德赛176为Cd敏感品种。

关键词: 菠菜, 耐Cd性, Cd吸收, 隶属函数法, 主成分分析, 综合评价

CLC Number: