大麦耐盐性评价

Q2 Multidisciplinary
Rajeswari Somasundaram, Neeru Sood, G. Swarup, R. Subramanian
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引用次数: 7

摘要

确定谷类作物中自然存在的非生物抗逆性材料是了解植物对胁迫反应的核心。盐度是一种限制作物产量的非生物胁迫因素。盐胁迫引发植物的主要生理变化,但在盐胁迫下,个别植物的表现可能不同。本研究以112份大麦为材料,在盐胁迫条件(1 Sm-1盐度)控制下种植至收获。然后对供试材料进行农艺和生理性状的综合分析。在盐胁迫下,不到5%的入选品种(CIHO6969、PI63926、PI295960和PI531867)提前开花。在盐胁迫下,只有PI327671和PI383011两份(< 2%)的鲜重和干重较高,产量也较好。4个材料PI531999、PI356780、PI452343和PI532041保持了较高的K+/Na+比值。这些表现最好的品种构成了大麦基因库中自然存在的变异,这将有助于加深我们对作物非生物胁迫耐受性的理解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessing salt-stress tolerance in barley
Identifying naturally existing abiotic-stress tolerant accessions in cereal crops is central to understanding plant responses toward sstress. Salinity is an abiotic stressor that limits crop yields. Salt stress triggers major physiological changes in plants, but individual plants may perform differently under salt stress. In the present study, 112 barley accessions were grown under controlled salt stress conditions (1 Sm-1 salinity) until harvest. The accessions were then analyzed for set of agronomic and physiological traits. Under salt stress, less than 5 % of the assessed accessions (CIHO6969, PI63926, PI295960, and PI531867) displayed early flowering. Only two (< 2 %) of the accessions (PI327671 and PI383011) attained higher fresh and dry weight, and a better yield under salt stress. Higher K+/Na+ ratios were maintained by four accessions PI531999, PI356780, PI452343, and PI532041. These top-performing accessions constitute naturally existing variants within barley’s gene pool that will be instrumental to deepen our understanding of abiotic-stress tolerance in crops.
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来源期刊
Universitas Scientiarum
Universitas Scientiarum Multidisciplinary-Multidisciplinary
CiteScore
1.20
自引率
0.00%
发文量
9
审稿时长
15 weeks
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