新疆农业科学 ›› 2024, Vol. 61 ›› Issue (8): 1831-1844.DOI: 10.6048/j.issn.1001-4330.2024.08.002

• 作物遗传育种·种质资源·分子遗传学·耕作栽培·生理生化 • 上一篇    下一篇

不同类型盐碱胁迫对棉花种子萌发的影响

董志多1,2(), 徐菲1,3, 付秋萍2, 黄建1, 祁通1(), 孟阿静1, 付彦博1,3, 开赛尔·库尔班3   

  1. 1.新疆农业科学院土壤肥料与农业节水研究所/农业农村部盐碱土改良与利用(干旱半干旱区盐碱地)重点实验室,乌鲁木齐 830091
    2.新疆农业大学水利与土木工程学院,乌鲁木齐 830052
    3.新疆农业科学院拜城农业试验站/国家土壤质量阿克苏观测试验站,新疆阿克苏 843000
  • 收稿日期:2024-02-01 出版日期:2024-08-20 发布日期:2024-09-19
  • 通信作者: 祁通(1982-),男,新疆人,研究员,研究方向为盐碱土改良与利用,(E-mail)tong1982nn@163.com
  • 作者简介:董志多(1997-),女,新疆塔城人,硕士研究生,研究方向为盐碱土改良与利用,(E-mail)dzd1281228561@163.com
  • 基金资助:
    新疆维吾尔自治区重大专项(2022A02007-1)

Effects of different types of salt and alkali stress on cotton seed germination

DONG Zhiduo1,2(), XU Fei1,3, FU Qiuping2, HUANG Jian1, QI Tong1(), MENG Ajing1, FU Yanbo1,3, Kaisaier Kuerban3   

  1. 1. Key Laboratory of Saline-alkali Soil Improvement and Utilization (Saline-Alkali Land in Arid and Semi-Arid Regions), Ministry of Agriculture and Rural Affairs, P. R. China,Urumqi 830091, China
    2. College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
    3. Baicheng Agricultural Experimental Station of Xinjiang Academy of Agricultural Sciences / National Soil Quality Aksu Observation Experimental Station, Aksu Xinjiang 843000, China
  • Received:2024-02-01 Published:2024-08-20 Online:2024-09-19
  • Correspondence author: QI Tong(1982-),male,from Xinjiang research fellow,research direction:improvement and utilization of saline-alkali soil, (E-mail)tong1982nn@163.com
  • Supported by:
    The Major Scientific R & D Program Project of Xinjiang Uygur Autonomous Region(2022A02007-1)

摘要:

【目的】研究不同类型盐碱胁迫对棉花种子萌发的影响并计算耐盐阈值。【方法】采用培养皿法,模拟设置4种类型盐碱胁迫和7个浓度处理,以新陆中84号、塔河2号、新陆中40号和酒棉18号棉花种子为研究对象,分析盐碱胁迫下棉花种子的发芽势、发芽率、发芽指数、种子活力指数、萌发后幼苗鲜重和干重变化,计算耐盐阈值和隶属函数值,并综合评价。【结果】 (1)在4种盐碱胁迫下,棉花种子的发芽势、发芽率、发芽指数、活力指数、萌发后幼苗的鲜重和干重均呈显著下降趋势。盐碱浓度与各项指标均呈极显著负相关,其中与发芽率的相关性超过-0.90。(2)在4种盐碱胁迫条件下棉花萌发期的耐盐阈值存在差异,S1胁迫下耐盐阈值为90.70~121.73 mmol/L;S2胁迫下耐盐阈值为82.68~128.30 mmol/L;S3胁迫下耐盐阈值为51.97~84.62 mmol/L。S4胁迫下耐盐阈值为73.49~98.21 mmol/L。(3)棉花种子耐盐性由强至弱的顺序在S1胁迫下为新陆中84号>新陆中40号>塔河2号>酒棉18号,在S2胁迫下为新陆中84号>塔河2号>新陆中40号>酒棉18号,在S3胁迫下为塔河2号>新陆中40号>新陆中84号>酒棉18号,S4胁迫下各品种棉花种子耐盐强弱顺序与S2胁迫一致。【结论】4种盐碱胁迫下均降低了棉花种子的发芽势、发芽率、发芽指数和活力指数,随着浓度升高,幼苗的鲜重和干重均呈下降趋势。碱性盐对棉花种子萌发影响明显大于中性盐。

关键词: 棉花; 盐胁迫; 种子萌发; 耐盐性; 发芽率

Abstract:

【Objective】 This study aims to investigate the influence and threshold of different types of saline-alkali stress on the germination of cotton seeds. 【Methods】 Four types of saline-alkali stress and seven concentration levels were simulated by Petri dish method. Cotton seeds of Xinluzhong 84, Tahe 2, Xinluzhong 40 and Jiumian 18 were used as research objects. The germination potential, germination rate, germination index, seed vigor index, fresh weight and dry weight of seedlings after germination were analyzed, salt tolerance threshold and membership function values were calculated, and comprehensive evaluation was carried out. 【Results】 (1) The germination potential, germination rate, germination index, vitality index, fresh weight and dry weight of cotton seed after germination showed a significant downward trend under the four types of saline-alkali stress. There was a significant negative correlation between saline-alkali concentration and all indexes, and the correlation between saline-alkali concentration and germination rate was more than -0.90. (2) The salt tolerance thresholds of cotton at germination stage were different under the four types of saline-alkali stress conditions. The salt tolerance thresholds under S1 stress ranged from 90.70 to 121.73 mmol/L. The salt tolerance threshold under S2 stress ranged from 82.68 to 128.30 mmol/L. The salt tolerance threshold under S3 stress ranged from 51.97 to 84.62 mmol/L. The salt tolerance threshold under S4 stress ranged from 73.49 to 98.21 mmol/L. (3) The salt tolerance of cotton seeds under four kinds of saline-alkali stress was analyzed by membership function and its order was Xinluzhong 84 > Xinluzhong 40 > Tahe 2 > Jiumian 18 under S1 stress, Xinluzhong 84 > Tahe 2 > Xinluzhong 40 > Jiumian 18 under S2 stress, and Tahe 2 > Xinluzhong 40 > Xinluzhong 84 > Jiumian 18 under S3 stress. It was found that the order of salt tolerance of cotton seeds under S4 stress was consistent with that under S2 stress. 【Conclusion】 The germination potential, germination rate, germination index and vigor index of cotton seeds are decreased under the four types of saline-alkali stress, and the fresh and dry weight of seedlings shows a downward trend with the increase of the concentration. The effect of alkaline salt on the germination of cotton seed is obviously greater than that of neutral salt.

Key words: cotton; salt stress; seed germination; salt tolerance; germination rate

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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