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中国农学通报

中国农学通报 ›› 2017, Vol. 33 ›› Issue (19): 22-28.doi: 10.11924/j.issn.1000-6850.casb17030165

所属专题： 园艺

• 农学 农业基础科学 • 上一篇    下一篇

甜菜萌发—幼苗期不同阶段耐盐能力的研究

於丽华1,王宇光1,孙 菲2,杨瑞瑞3,王秋红1,耿 贵1   

  1. (1黑龙江省普通高校甜菜遗传育种重点试验室/黑龙江大学,哈尔滨 150080；2北海道大学,日本札幌市 060-0808；3黑龙江大学生命科学学院,哈尔滨 150080）
  • 收稿日期:2017-03-25 修回日期:2017-05-31 接受日期:2017-05-25 出版日期:2017-07-11 发布日期:2017-07-11
  • 通讯作者: 耿 贵
  • 基金资助:
    黑龙江省教育厅高校基本科研业务费专项资金项目“外源亚精胺对甜菜幼苗耐盐性调控的研究”(HDJCCX-201614)；国家甜菜农业产业技术体系“东北区栽培”(CARS-210301)；国际科技合作项目“抗旱、耐盐碱能源甜菜品种”选育与栽培技术研究（S2010NR0854）；黑龙江省教育厅科学技术研究项目“甜菜根际土壤有机氮矿化特征及其影响因素”(12541623)。

Salt Tolerance of Sugarbeet: From Germination to Seedling Stage

Yu Lihua1, Wang Yuguang1, Sun Fei2, Yang Ruirui3, Wang Qiuhong1, Geng Gui1   

  1. (1Key Laboratory of Sugar Beet Genetic Breeding of Heilongjiang Province/Heilongjiang University, Harbin 150080; 2Hokkaido University, Sapporo Japan 060-0808; 3College of Life Science of Heilongjiang University, Harbin 150080)
  • Received:2017-03-25 Revised:2017-05-31 Accepted:2017-05-25 Online:2017-07-11 Published:2017-07-11

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摘要： 为明确甜菜萌发—幼苗期不同生长阶段的耐盐能力，采用室内水培的方法，研究不同浓度NaCl下，甜菜种子的发芽率、子叶期和第3对真叶期甜菜幼苗生长和一些生理指标的变化。结果表明：在萌发期进行NaCl胁迫，低、高浓度处理(140、280 mmol/L)甜菜种子的发芽率分别为75%、22%；随着NaCl浓度提高，甜菜种子发芽时间逐渐延长，发芽率显著降低。子叶期和3对真叶期幼苗均未由于胁迫致死，子叶期幼苗根系、叶片、叶柄以及整株生物量，叶面积及叶绿素含量都较对照明显降低，子叶期细胞膜的伤害率增大；3对真叶期幼苗只在高浓度NaCl处理下生物量、叶面积有所降低。因此，在萌发期进行NaCl胁迫，甜菜生长受到胁迫影响最大，子叶期胁迫影响次之，3对真叶期胁迫影响最小。

关键词: 土壤, 土壤, 重金属, 钝化剂

Abstract: The paper aims to clarify salt tolerance of sugarbeet from germination to seedling stage. By hydroponics indoor, we studied the germination rate of sugarbeet seeds, seedlings’growth during the cotyledon stage and the stage of third- pair true leaves, and some physiological indexes changes under different concentrations of NaCl. The results showed that: under NaCl stress at germination stage, the germination rate of sugarbeet seed was 75% and 22% in low and high concentration (140, 280 mmol/L), respectively; with the increase of NaCl concentration, the germination time of sugarbeet seed gradually extended, and the germination rate decreased significantly; during the stage of cotyledon and third-pair true leaves, salt stress could not cause plant death; the biomass of root, leaf, petiole and the whole plant, leaf area and chlorophyll content were significantly lower than those of CK, so the damage rate increased at the cotyledon stage; only biomass and leaf area reduced under high concentration of NaCl at the stage of the third-pair true leaves. Therefore, the effect ofNaCl stress on sugarbeet at germination stage was the biggest, followed by that at the cotyledon stage, while the smallest was that at third-pair true leaves stage.

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