新疆农业科学 ›› 2024, Vol. 61 ›› Issue (2): 393-401.DOI: 10.6048/j.issn.1001-4330.2024.02.015

• 园艺特产·土壤肥料·植物保护 • 上一篇    下一篇

盐胁迫对美国黑核桃幼苗生长和生理特性的影响

欧源1,2(), 罗莎莎1,2, 王如月1,2, 孙雅丽3, 虎海防4()   

  1. 1.新疆农业大学林学与风景园林学院,乌鲁木齐 830052
    2.新疆佳木果树学国家长期科研基地,新疆阿克苏 843000
    3.新疆林业科学院经济林研究所,乌鲁木齐 830063
    4.新疆林业科学院园林绿化研究所,乌鲁木齐 830063
  • 收稿日期:2023-06-22 出版日期:2024-02-20 发布日期:2024-03-19
  • 通信作者: 虎海防(1975-),男,新疆乌鲁木齐人,研究员,博士,研究方向为经济林选育与栽培,(E-mail)43784936@qq.com
  • 作者简介:欧源(1989-),男,重庆人,硕士研究生,研究方向为森林培育技术与应用,(E-mail)376908921@qq.com
  • 基金资助:
    新疆维吾尔自治区林业发展补助资金项目(XJLYKJ202210)

Effects of salt stress on the growth and physiological characteristics of american black walnut seedlings

OU Yuan1,2(), LUO Shasha1,2, WANG Ruyue1,2, SUN Yali3, HU Haifang4()   

  1. 1. School of Forestry and Landscape Architecture, Xinjiang Agricultural University, Urumqi 830052, China
    2. National Long-Term Research Base of Fruit Tree Science in Jiamu in Xinjiang, Aksu Xinjiang 843000, China
    3. Institute of Economic Forestry, Xinjiang Academy of Forestry, Urumqi 830063, China
    4. Institute of Landscape Architecture, Xinjiang Academy of Forestry, Urumqi 830063, China
  • Received:2023-06-22 Online:2024-02-20 Published:2024-03-19
  • Correspondence author: HU Haifang(1975-),male,from Urumqi Xinjiang,the main research direction is fruit tree germplasm resources and cultivation physiology,(E-mail)43784936@qq.com
  • Supported by:
    Forestry Development Subsidy Fund Project of Xinjiang Uygur Autonomous Region(XJLYKJ202210)

摘要:

【目的】研究美国黑核桃(以下简称黑核桃)在盐胁迫下幼苗生长和生理特性变化规律,综合分析不同黑核桃幼苗的耐盐性,为选育黑核桃耐盐品种、抗盐性机制及其在新疆核桃种植区耐盐性砧木的筛选提供参考依据。【方法】以黑核桃品种小果黑核桃(Juglans regia.microcarpa)、北加州黑核桃(Juglans regia.hindsii)、东部黑核桃(Juglans regia.nigra)和魁核桃(Juglans regia.major)实生苗为材料,分析4种黑核桃幼苗在不同NaCl浓度胁迫下地上干重、地下干重、主根长、侧根数、MDA含量等9项生长指标和生理响应,采用相关性分析、隶属函数分析法综合评价幼苗耐盐性。【结果】在盐胁迫下,4种黑核桃幼苗生长均受到抑制,盐胁迫40 d后,地上干重、地下干重、主根长和侧根数均有不同程度的下降,不同材料的变化幅度不同;随着盐浓度增加,丙二醛含量上升,SOD活性、POD活性、脯氨酸含量和可溶性糖含量总体呈先增加后降低的趋势。【结论】4种黑核桃耐盐能力由强至弱为东部黑核桃>小果黑核桃>魁核桃>北加州黑核桃。

关键词: 黑核桃; 盐胁迫; 生长生理; 综合评价

Abstract:

【Objective】 Study the growth and physiological changes of American black walnut under salt stress and a comprehensive analysis of the salt tolerance of different seedlings, with a view to providing a reference for the selection and breeding of salt-tolerant varieties of black walnut, salt resistance mechanisms and the screening of salt-tolerant rootstocks in Xinjiang walnut growing areas.【Methods】 The growth and physiological responses of seedlings of small-fruited black walnut(Juglans regia.microcarpa), northern California black walnut(Juglans regia.hindsii), eastern black walnut(Juglans regia.nigra)and quebracho black walnut(Juglans regia.major)were analyzed by correlation analysis and subordinate function analysisgrowth and physiological responses of above-ground dry weight, below-ground dry weight, main root length, lateral root number and MDA content of the four black walnut seedlings were analyzed.【Results】 After 40 d of salt stress, above-ground dry weight, below-ground dry weight, main root length and number of lateral roots all decreased to different degrees, with different magnitudes of change for different materials; with increasing salt concentration, malondialdehyde content increased, and SOD activity, POD activity, proline content and soluble sugar content generally showed a trend of first increasing and then decreasing.【Conclusion】 A comprehensive analysis of the affiliation function values yielded four species of black walnuts in descending order of salt tolerance:eastern black walnut > small-fruited black walnut > quebracho black walnut > northern California black walnut.

Key words: black walnut; salt stress; growth physiology; comprehensive evaluation

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

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