Differences in Seed Germination, Plant Growth, and Proline Content of Some Pepper (Capsicum annuum L.) Genotypes Under Salinity Stress

IF 2.4 3区 农林科学 Q1 AGRONOMY
Mostafakamal Shams, Ertan Yildirim, Ali Khadivi, Melek Ekinci, Seid Hussen Muhie
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Abstract

Salinity is a major abiotic stress that can affect plant growth and development adversely. However, there is bare knowledge about its role in the quality of the seeds obtained from the plants that are grown under salinity. The present study aimed to explore the effect of salinity stress (control (0.7), 3.5, and 7 dS m−1) on the seed germination parameters, 1000-seed weight, plant growth, and proline content of pepper (Capsicum annuum L.) genotypes (Maras, Carliston, and Dolmalik) in the greenhouse in 2018. The results showed that salinity stress significantly affected pepper genotypes, but their response to salinity stress was different. In this respect, the Maras genotype showed the highest proline content, leaf area, and plant biomass and showed tolerance to salinity stress relative to the other genotypes. Concerning seed germination rates, Carliston and Dolmalik experienced severe reductions of 60 and 68%, respectively, under 7 dS m−1 salinity level compared to the control, while the Maras genotype showed a mild drop of 27%. At a higher salinity level of 7 dS m−1, there was a negative impact on 1000-seed weight, resulting in reductions of 20.73%, 36.12%, and 34.39% in Maras, Carliston, and Dolmalik, respectively. Importantly, the study findings underscored that salinity stress had a less severe adverse effect on the seed germination parameters and 1000-seed weight of the Maras genotype compared to the other genotypes, signifying its heightened tolerance to salinity. Furthermore, the present findings revealed that a reduction in both plant growth and biomass during the vegetative growth phase exerts adverse effects on seed weight and seed germination parameters. Moreover, the research identified the Maras as a salinity-tolerant genotype, which makes it a potential candidate for breeding programs.

Abstract Image

盐度胁迫下一些辣椒(Capsicum annuum L.)基因型的种子萌发、植株生长和脯氨酸含量的差异
盐度是一种主要的非生物胁迫,会对植物的生长和发育产生不利影响。然而,人们对盐分对在盐分胁迫下生长的植物种子质量的影响知之甚少。本研究旨在探讨 2018 年温室中盐度胁迫(对照(0.7)、3.5 和 7 dS m-1)对辣椒(Capsicum annuum L.)基因型(Maras、Carliston 和 Dolmalik)的种子萌发参数、千粒重、植株生长和脯氨酸含量的影响。结果表明,盐分胁迫对辣椒基因型有显著影响,但它们对盐分胁迫的反应不同。在这方面,与其他基因型相比,马拉斯基因型的脯氨酸含量、叶面积和植株生物量最高,并表现出对盐分胁迫的耐受性。在种子萌发率方面,与对照相比,在 7 dS m-1 的盐度条件下,卡利斯顿和多尔马利克的种子萌发率分别严重下降了 60% 和 68%,而马拉斯基因型的种子萌发率则轻微下降了 27%。在 7 dS m-1 的较高盐度水平下,马拉斯、卡利斯顿和多尔马利克的千粒重受到了负面影响,分别减少了 20.73%、36.12% 和 34.39%。重要的是,研究结果表明,与其他基因型相比,盐胁迫对马拉斯基因型的种子萌发参数和千粒重的不利影响较小,这表明其耐盐性较强。此外,本研究结果表明,植物在无性生长阶段的生长和生物量减少会对种子重量和种子萌发参数产生不利影响。此外,研究还发现 Maras 是一种耐盐基因型,这使其成为育种计划的潜在候选品种。
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来源期刊
Gesunde Pflanzen
Gesunde Pflanzen 农林科学-农艺学
CiteScore
3.50
自引率
25.80%
发文量
152
审稿时长
>12 weeks
期刊介绍: Gesunde Pflanzen publiziert praxisbezogene Beiträge zum Pflanzenschutz in Landwirtschaft, Forstwirtschaft, Gartenbau und öffentlichem Grün und seinen Bezügen zum Umwelt- und Verbraucherschutz sowie zu Rechtsfragen. Das Themenspektrum reicht von der Bestimmung der Schadorganismen über Maßnahmen und Verfahren zur Minderung des Befallsrisikos bis hin zur Entwicklung und Anwendung nicht-chemischer und chemischer Bekämpfungsstrategien und -verfahren, aber auch zu Fragen der Auswirkungen des Pflanzenschutzes auf die Umwelt, die Sicherung der Ernährung sowie zu allgemeinen Fragen wie Nutzen und Risiken und zur Entwicklung neuer Technologien. Jedes Heft enthält Originalbeiträge renommierter Wissenschaftler, aktuelle Informationen von Verbänden sowie aus der Industrie, Pressemitteilungen und Personalia. Damit bietet die Zeitschrift vor allem Behörden und Anwendern im Agrarsektor und Verbraucherschutz fundierte Praxisunterstützung auf wissenschaftlichem Niveau.
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