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中国农学通报

中国农学通报 ›› 2026, Vol. 42 ›› Issue (16): 100-109.doi: 10.11924/j.issn.1000-6850.casb2026-0047

• 林学·园艺·园林 • 上一篇    下一篇

赤霉素和水杨酸对盐胁迫下万寿菊种子萌发、幼苗生长及生理的影响

王亚楠1,2(), 李涛3, 何世昊1, 帕丽努尔·艾外力1, 王嘉丰1, 王鑫1, 李志元1(), 秦勇1   

  1. 1 新疆农业大学园艺学院， 乌鲁木齐 830052
    2 新疆工业职业技术大学， 乌鲁木齐 830021
    3 新疆和田学院， 新疆和田 848000
  • 收稿日期:2026-01-15 修回日期:2026-06-01 出版日期:2026-08-25 发布日期:2026-08-20
  • 通讯作者:
    李志元，男，1993年出生，吉林东辽人，讲师，博士，研究方向为园艺作物栽培与生理。通信地址：830052 新疆维吾尔自治区乌鲁木齐市农大东路311号，Tel：0991-8763007，E-mail：。
  • 作者简介:

    王亚楠，女，1994年出生，河南漯河人，讲师，硕士，研究方向为园艺作物栽培与分子育种。通信地址：830052 新疆维吾尔自治区乌鲁木齐市农大东路311号，Tel：0991-8763007，E-mail：。

  • 基金资助:
    新疆维吾尔自治区高校基本科研业务费“雪菊CtWRKY41介导类黄酮生物合成增强低氮胁迫耐受的机制解析”(XJEDU2025P031); 新疆领军人才引进计划(XJRC-2025-JY-YJ-GX-QNQZ-049); 新疆维吾尔自治区青年科学基金项目“CtWRKY33调控雪菊低氮胁迫耐性的分子机制”(2025D01B50)

Effects of Gibberellin and Salicylic Acid on Germination, Seedling Growth and Physiology of Tagetes erecta Under Salt Stress

WANG Yanan1,2(), LI Tao3, HE Shihao1, PALINUR·Aiwaili1, WANG Jiafeng1, WANG Xin1, LI Zhiyuan1(), QIN Yong1   

  1. 1 College of Horticulture, Xinjiang Agricultural University, Urumqi 830052
    2 Xinjiang Light Industry Vocational and Technical College, Urumqi 830021
    3 Xinjiang Hotan College, Hotan, Xinjiang 848000
  • Received:2026-01-15 Revised:2026-06-01 Published:2026-08-25 Online:2026-08-20

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摘要：

探究赤霉素(GA3)与水杨酸(SA)在盐胁迫条件下对万寿菊种子萌发与幼苗生长的调控效应，为盐碱地万寿菊栽培中植物激素的应用提供理论依据。以色素万寿菊为试材，采用盆栽灌根模拟植株盐胁迫(80 mmol/L)生长环境，设置清水和盐胁迫处理，并通过种子浸种+幼苗期外源喷施赤霉素(GA3，100、200、400 mg/L)和水杨酸(SA，200、400、600 mg/L)，系统研究其对万寿菊种子萌发、幼苗生长和生理特性的影响。结果表明，200 mg/L赤霉素处理(G2)使盐胁迫下的万寿菊种子发芽率大幅增加了45.0%，且发芽势、发芽指数和活力指数分别提高了7.92、1.45、3.23倍，平均发芽时间提前了0.74 d，同时使幼苗胚根长、根冠比分别显著增加了22.3%、27.5%，并增加了植株生物量和含水量。400 mg/L水杨酸处理(S2)使万寿菊在盐胁迫下的发芽势、发芽指数、活力指数分别提高了7.93、1.37、4.47倍，幼苗的长度、胚根长度、根冠比分别增加了6.3%、12.1%和28.4%。而当GA3和SA浓度超过G2和S2时，其促进效应有所减弱。此外，GA3和SA可通过提升可溶性蛋白含量和超氧化物歧化酶(SOD)活性，同时抑制可溶性糖、脯氨酸等渗透调节物质的积累，从而有效缓解盐胁迫对万寿菊种子萌发和幼苗生长的抑制作用。综上，种子浸种和外源喷施GA3和SA有利于促进盐胁迫下万寿菊种子萌发及幼苗的生长，其中200 mg/L的GA3和400 mg/L的SA处理效果最佳。

关键词: 赤霉素, 水杨酸, 万寿菊, 盐胁迫, 生长, 生理

Abstract:

This study aims to investigate the effects of different concentrations of gibberellin (GA3) and salicylic acid (SA) on seed germination and plant growth physiology of marigold under salt-alkali stress, so as to provide theoretical support and technical guidance for the application of hormones in marigold cultivation under adverse conditions. Using pigment marigold as the test material, pot irrigation was used to simulate a saline growth environment (80 mmol/L). Treatments included clear water and salt stress. Through seed soaking+ seedling foliar spraying, the effects of gibberellin (100, 200 and 400 mg/L) and salicylic acid (200, 400 and 600 mg/L) on marigold seed germination, seedling growth, and physiology under salt stress were studied. The 200 mg/L gibberellin treatment (G2) significantly increased the germination rate of marigold seeds under salt stress by 45.0%, while the germination potential, germination index, and vigor index were increased by 7.92, 1.45 and 3.23 times, respectively. The mean germination time was advanced by 0.74 days. Simultaneously, it significantly increased seedling radicle length and root-to-shoot ratio by 22.3% and 27.5%, respectively, and also increased plant biomass and water content. Additionally, the 400 mg/L salicylic acid treatment (S2) significantly increased the germination potential, germination index, and vigor index under salt stress by 7.93, 1.37 and 4.47 times, respectively. Seedling length, radicle length, and root-to-shoot ratio were increased by 6.3%, 12.1%, and 28.4%, respectively. However, concentrations exceeding G2 and S2 reduced the promotive effects on marigold seed germination and seedling growth. Gibberellin and salicylic acid treatments promoted seed germination and seedling growth of marigold under salt stress by regulating increases in soluble protein content and SOD activity, and decreases in osmotic adjustment substances such as soluble sugar and proline content. Seed soaking and exogenous spraying of GA3 and SA are beneficial for promoting seed germination and seedling growth of marigold under salt stress. The promoting effects are optimal at 200 mg/L GA3 and 400 mg/L SA.

Key words: gibberellin, salicylic acid, Tagetes erecta, salt stress, growth, physiology

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