有色大麦种质芽期耐盐性鉴定
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西藏农牧学院植物科学学院,西藏 林芝 860000

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国家自然科学基金资助项目(31560312);西藏农牧学院研究生创新计划资助项目(YJS2018-17)


Evaluation of Salt Tolerance of Colored Barley Germplasm during Germination
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Plant Sciences College, Tibet Agriculture & Animal Husbandry University, Tibet linzhi 860000

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    摘要:

    以44份有色大麦种质为试材,通过测定发芽势、发芽率、发芽指数、萌发活力指数结合两个颜色指标YU(颜色亮度和浓度)进行芽期的耐盐性鉴定,并运用相关性分析、主成分分析、聚类分析等方法对有色大麦材料进行了多指标耐盐性综合评价。结果表明,发芽率和发芽指数对盐胁迫响应最为敏感,芽长和根长对盐胁迫响应较为迟钝;粒色亮度与耐盐系数呈显著负相关;粒色浓度与耐盐系数呈显著正相关;综合指标F值相关分析表明,颜色越深,耐盐性越强;用综合指标F值,可将44份有色大麦分为4类,其中强耐盐材料包括XZDM-1401、XZDM-1404、XZDM-1543、XZDM-1546等4份,中等耐盐性包括ZDM-926、XZDM-957、XZDM-972等16份,弱耐盐性包括XZDM-815、XZDM-1606、XZDM-972等12份,敏盐性包括XZDM-973、XZDM-1042、XZDM-1318等12份。

    Abstract:

    In this paper, 44 colored barley germplasms were used as test materials to comprehensively evaluate the multi-index salt tolerance of colored barley germplasm., The germination potential, germination rate, germination index and germination vigor index of the experimental seeds were determined by combining the two color indicators YU (color brightness and concentration) to identify the salt tolerance of the bud stage, and correlation analysis and principal component analysis were used , cluster analysis and other methods to carry out this test. The results showed that the germination rate and germination index were the most sensitive to salt stress response, and germination length and root length are slower to respond to salt stress, and the color brightness and salt tolerance were negatively correlated. The color concentration and salt tolerance were significantly positively correlated. Correlation analysis using F value shows that a positive correlation between the grain color and the salt tolerance, the deeper the color, the stronger the salt tolerance; 44 kinds of colored barley can be divided into 4 categories by comprehensive index F value: (i) four accessions, such as XZDM-1401, XZDM-1404, XZDM-1543, XZDM-1546, which showed strong salt-tolerant; (ii) 16 accessions, such as ZDM-926, XZDM-957, XZDM-972, that showed moderate salt tolerant; (iii) 12 accessions, such as XZDM-815, XZDM-1606 and XZDM-972, that showed weak salt tolerant; (iv) 12 accessions, such as XZDM-973, XZDM-1042 and XZDM-1318, that showed highly salt sensitive.

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张 毅,侯维海,冯西博,等.有色大麦种质芽期耐盐性鉴定[J].植物遗传资源学报,2019,20(3):564-573.

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  • 收稿日期:2018-08-15
  • 最后修改日期:2019-03-12
  • 录用日期:2019-01-03
  • 在线发布日期: 2019-05-13
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