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中国农学通报

中国农学通报 ›› 2025, Vol. 41 ›› Issue (34): 23-29.doi: 10.11924/j.issn.1000-6850.casb2025-0166

• 林学·园艺·园林 • 上一篇    下一篇

9种白蜡苗期耐盐响应与综合评价

袁晨晨1,2(), 燕丽萍1(), 李丽1(), 周健1, 孙超1, 王因花1, 李天娇1   

  1. 1 山东省林业科学研究院/山东省生态林草遗传育种重点实验室，济南 250014
    2 山东农业大学，山东泰安 271000
  • 收稿日期:2025-03-05 修回日期:2025-09-10 出版日期:2025-12-04 发布日期:2025-12-04
  • 通讯作者:
    燕丽萍，女，正高级工程师，博士，主要研究方向：林木遗传育种。通信地址：250014 山东省济南市历下区文化东路42号，E-mail：。
    李丽，女，正高级工程师，主要研究方向：林木遗传育种。通信地址：250014 山东省济南市历下区文化东路42号，E-mail：。
  • 作者简介:

    袁晨晨，女，硕士研究生，主要研究方向：林木遗传育种。通信地址：250014 山东省济南市历下区文化东路42号，E-mail：。

  • 基金资助:
    山东省良种工程项目“耐盐碱生态经济树种新品种选育”(2023LZ GC012); 泰山学者工程资助; 山东省自然科学基金项目“盐诱导的FvCAMTA1转录因子调控绒毛白蜡耐盐的机制研究”(ZR2022MC090)

Salt Tolerance Response and Comprehensive Evaluation of Nine Kinds of Fraxinus at Seedling Stage

YUAN Chenchen1,2(), YAN Liping1(), LI Li1(), ZHOU Jian1, SUN Chao1, WANG Yinhua1, LI Tianjiao1   

  1. 1 Shandong Provincial Academy of Forestry/ Shandong Provincial Key Laboratory of Forest Tree Genetic Improvement, Jinan 250014
    2 Shandong Agricultural University, Tai’an, Shandong 271000
  • Received:2025-03-05 Revised:2025-09-10 Published:2025-12-04 Online:2025-12-04

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摘要：

为探究白蜡杂交苗在盐胁迫环境下生长性状以及生理响应的变化情况，了解不同杂交苗的耐盐特性，本研究选取当年生7种白蜡杂交种子苗以及2个白蜡新品种作为试验材料。通过设置不同浓度(0‰、4‰、8‰、12‰)的盐胁迫处理，系统研究这些白蜡材料的生理响应，并运用隶属函数法对9种白蜡当年生苗的抗盐能力进行综合评价。研究结果表明，随着盐胁迫强度的逐步增加，9种白蜡幼苗的生长均受到不同程度的抑制。其中，‘327’和‘325’的株高和地径下降幅度相对较小，受盐害影响并不显著；而‘青碧’和‘344’的生长则明显受到盐胁迫抑制。在生理指标方面，相较于其他组合，‘327’和‘325’在盐胁迫下电导率和丙二醛含量的变化较为平稳，叶绿素含量的降低幅度较小，叶片超氧化物歧化酶活性上升幅度较大，脯氨酸含量和可溶性糖含量的增加幅度也明显大于其他种质。相反，‘青碧’和‘344’的电导率和丙二醛含量上升幅度较大，叶绿素含量下降幅度显著，叶片超氧化物歧化酶活性、脯氨酸含量和可溶性糖含量的增加幅度均较小。综合来看，在盐胁迫条件下，‘327’和‘325’具有较强的抗氧化酶保护系统，细胞膜结构相对完整，膜脂质过氧化程度较低，叶绿素损失较少，能够通过光合作用积累较多的光合产物，植株生长速度较快，表现出较高的耐盐性；而‘青碧’和‘344’的耐盐性则较差。基于隶属函数法对9种白蜡幼苗的耐盐性进行综合评价，9种白蜡幼苗耐盐性由强到弱依次为‘327’>‘325’>‘鲁蜡6号’>‘318’>‘317’>‘346’>‘342’>‘344’>‘青碧’。

关键词: 白蜡, 盐胁迫, 生理响应, 耐盐性, 综合评价

Abstract:

To study the changes in growth traits and physiological responses of Fraxinus hybrid seedling under salt stress and understand the salt tolerance of different hybrid seedlings, seven kinds of Fraxinus hybrid seedlings and two new varieties of Fraxinus were used as test materials to study their physiological responses to salt stress (0‰, 4‰, 8‰, 12‰), and the salt tolerance of nine kinds of Fraxinus seedlings was comprehensively evaluated by membership function method. The results showed that with the increase of salt stress intensity, the growth of hybrid seedlings was inhibited. The plant height and ground diameter of ‘327’ and ‘325’ decreased less, and the effect of salt damage was not obvious, while the inhibition of salt stress on the growth of ‘Qingbi’ and ‘344’ was more obvious. Compared with other combinations, the conductivity and MDA content of ‘327’ and ‘325’ changed more smoothly under salt stress, the chlorophyll content decreased less, the SOD activity in leaves increased more, and the proline content and soluble sugar content increased more than other hybrid seedlings. The conductivity and MDA content of ‘Qingbi’ and ‘344’ increased significantly, the chlorophyll content decreased greatly, and the SOD enzyme activity, proline content and soluble sugar content in leaves increased less. It indicated that under salt stress, ‘327’ and ‘325’ had stronger antioxidant enzyme protection system, more complete cell membrane structure, lower membrane lipid peroxidation, lower chlorophyll loss, more photosynthetic accumulation of photosynthetic products, faster plant growth and higher salt tolerance, while ‘Qingbi’ and ‘344’ had poor salt tolerance. The salt tolerance of 9 kinds of Fraxinus seedlings was comprehensively evaluated by membership function method, and the order of salt tolerance was ‘327’>‘325’>‘Lula 6’>‘318’>‘317’>‘346’>‘342’>‘344’>‘Qingbi’.

Key words: Fraxinus, salt stress, physiological response, salt tolerance, comprehensive evaluation