河南农业科学 ›› 2022, Vol. 51 ›› Issue (12): 122-130.DOI: 10.15933/j.cnki.1004-3268.2022.12.014

• 园艺 • 上一篇    下一篇

镉铅复合胁迫对草本花卉种子萌发及幼苗生长的影响

李洁薇1,2,池永清3,吴钿芳2,朱阳春2,丁枫华2
  

  1. (1.浙江农林大学,浙江 杭州 310000;2.丽水学院,浙江 丽水 323000;3.丽水市土肥植保能源总站,浙江 丽水 323000)
  • 收稿日期:2022-07-22 出版日期:2022-12-15 发布日期:2023-01-17
  • 通讯作者: 丁枫华(1970-),女,浙江杭州人,教授,博士,主要从事土壤重金属污染及修复和土壤改良工作。E-mail:dfh0578@163.com
  • 作者简介:李洁薇(1997-),女,浙江杭州人,在读硕士研究生,研究方向:耕地质量培育与提升。E-mail:1193588521@qq.com
  • 基金资助:
    浙江省受污染耕地安全利用试点项目(浙建科丽2021005号);浙江省丽水市重点研发计划项目(2022ZDYF02)

Effects of Cadmium and Lead Combined Stress on Seed Germination and Seedling Growth of Herbaceous Flowers

LI Jiewei1,2,CHI Yongqing3,WU Tianfang2,ZHU Yangchun2,DING Fenghua2   

  1. (1.Zhejiang Agriculture & Forest University,Hangzhou 310000,China;2.Lishui University,Lishui 323000,China;3.Soil Fertilizer Plant Protection Energy Main Station of Lishui,Lishui 323000,China)
  • Received:2022-07-22 Published:2022-12-15 Online:2023-01-17

摘要: 为探究草本花卉萌发期对镉铅胁迫的抗耐性,以7种常见草本花卉种子为试验材料,研究不同质量浓度镉铅复合胁迫对花卉种子萌发和幼苗生长的影响。结果表明:5 mg/L+50 mg/L镉铅胁迫对百日草、鲁冰花和二月兰的发芽指数、活力指数起促进作用;10 mg/L+250 mg/L镉铅胁迫下,波斯菊和紫茉莉的干质量高于对照(去离子水);40 mg/L+1 000 mg/L 镉铅胁迫下,7 种草本花卉根长受到显著抑制;80 mg/L+2 000 mg/L镉铅胁迫对7种花卉种子萌发和幼苗生长表现为完全抑制,对根的生长抑制大于对芽的生长抑制。根据加权隶属函数D 值,7种草本花卉种子耐镉铅能力依次为紫茉莉>千日红>波斯菊>鲁冰花>金盏菊>百日草>二月兰。通过对加权隶属函数值进行聚类分析,将7种草本花卉种子划分为耐镉铅型(紫茉莉)、中间型(千日红、波斯菊、鲁冰花)和敏感型(金盏菊、百日草、二月兰)3种类型。

关键词: 镉, 铅, 草本花卉, 种子萌发, 加权隶属函数法, 聚类分析

Abstract: In order to explore the tolerance to cadmium and lead combined stress in the germination stage of herbaceous flowers,the seeds of seven species of herbaceous flowers were chosen as experimental materials to study the effects of cadmium and lead combined stress on seed germination and seedling growth.The results showed that under cadmium and lead stress,5 mg/L+50 mg/L mass concentration could promote germination index and vigor index of Zinnia elegans,Lupinus micranthus and Orychophragmus violaceus. The dry weight of Cosmos bipinnatus and Mirabilis jalapa was higher under cadmium and lead concentration of 10 mg/L+250 mg/L than that of the control with water.The root length of seven species of herbaceous flowers was significantly inhibited with cadmium and lead concentration of 40 mg/L+1 000 mg/L. 80 mg/L+2 000 mg/L cadmium and lead stress completely inhibited the seed germination and seedling growth.The growth inhibition of root was greater than that of seedling.According to the D value of weighted membership function,the cadmium and lead tolerance of herbaceous flower seeds was in the order of Mirabilis jalapa>Gomphrena globose>Cosmos bipinnatus>Lupinus micranthus>Calendula officinalis>Zinnia elegans>Orychophragmus violaceus.The cluster analysis of the membership function integrated values showed that the test herbaceous flower seeds were divided into three categories including high resistance(Mirabilis jalapa),medium resistance(Gomphrena globose,Cosmos bipinnatus,Lupinus micranthus)and low resistance(Calendula officinalis,Zinnia elegans,Orychophragmus violaceus

Key words: Cadmium, Lead, Herbaceous flower, Seed germination, Weighted membership function method, Cluster analysis

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