Wheat Wild Relatives and Modern Cultivars Differ for Salt Resistance in Terms of Morpho-Physiological Traits

IF 3.3 3区农林科学 Q1 AGRONOMY

Journal of Plant Nutrition and Soil Science Pub Date : 2026-10-01 Epub Date: 2026-07-08 DOI:10.1002/jpln.70092

Muhammad Saqib, Riya Raj, Michael Frei

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引用次数: 0

Abstract

Background

Wheat wild relatives are untapped genetic resources from salinity and drought hit areas. Salinity disrupts physiological processes of wheat leading to impaired growth and development. A comparative study on salt resistance of wheat wild relatives (landraces and wild types) and modern wheat cultivars is lacking.

Aims

This study compares the impact of salinity on wild wheat species, landraces, and modern wheat cultivars to identify salt-resistant traits and genotypes.

Methods

A hydroponics experiment was carried out on wheat in controlled environment with two treatments (nonsaline and saline [125 mM NaCl]) and three replications over a period of 4 weeks. Morph-physiological traits were studied.

Results

Salinity significantly reduced growth and physiological performance of wheat with significant differences among the wheat genotypes and a significant genotype × salinity interaction. Salinity increased shoot Na⁺ concentration and decreased shoot K⁺ concentration and shoot K⁺:Na⁺ ratio. Wheat species and genotypes differed for their response to salinity for Photosystem II efficiency, chlorophyll contents, stomatal conductance, and malondialdehyde. Triticum dicoccoides (G242) is the most salt-resistant genotype based on relative shoot fresh and dry weights under saline conditions.

Conclusions

This is the first study presenting differential comparative morph-physiological responses of wheat wild species, landraces, and modern cultivars under saline conditions. Salt-resistant species produced more shoot and root biomass under saline conditions through salt exclusion or tissue tolerance. Salt-resistant genotypes like T. dicoccoides may be used for de novo domestication and to introduce salinity resistance traits in wheat improvement programs.

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小麦野生近缘种与现代品种在形态生理性状上的抗盐性差异

小麦野生近缘种是盐渍化和干旱地区尚未开发的遗传资源。盐碱破坏小麦生长发育的生理过程。小麦野生近缘品种（地方品种和野生品种）与现代小麦品种的耐盐性比较研究缺乏。目的比较盐碱对野生小麦品种、地方小麦品种和现代小麦品种的影响，以鉴定耐盐性状和基因型。方法对小麦进行水培试验，在控制环境下进行2个处理（非盐水和盐水[125 mM NaCl]）， 3个重复，为期4周。形态生理性状进行了研究。结果盐胁迫显著降低小麦的生长和生理性能，且不同基因型间存在显著差异，且基因型与盐胁迫间存在显著互作。盐升高了地上部Na+浓度，降低了地上部K+浓度和K+:Na+比值。小麦品种和基因型对盐度的响应在光系统II效率、叶绿素含量、气孔导度和丙二醛方面存在差异。在盐碱条件下，小麦（G242）的相对鲜重和干重是最耐盐的基因型。结论本研究首次揭示了小麦野生品种、地方品种和现代品种在生理盐水条件下形态生理反应的差异。耐盐树种在盐碱条件下通过排盐或组织耐受产生更多的茎和根生物量。耐盐基因型如双球菌可用于重新驯化和引进耐盐性状的小麦改良计划。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Plant Nutrition and Soil Science 农林科学-农艺学

CiteScore

4.70

自引率

8.00%

发文量

审稿时长

8-16 weeks

期刊介绍： Established in 1922, the Journal of Plant Nutrition and Soil Science (JPNSS) is an international peer-reviewed journal devoted to cover the entire spectrum of plant nutrition and soil science from different scale units, e.g. agroecosystem to natural systems. With its wide scope and focus on soil-plant interactions, JPNSS is one of the leading journals on this topic. Articles in JPNSS include reviews, high-standard original papers, and short communications and represent challenging research of international significance. The Journal of Plant Nutrition and Soil Science is one of the world’s oldest journals. You can trust in a peer-reviewed journal that has been established in the plant and soil science community for almost 100 years. Journal of Plant Nutrition and Soil Science (ISSN 1436-8730) is published in six volumes per year, by the German Societies of Plant Nutrition (DGP) and Soil Science (DBG). Furthermore, the Journal of Plant Nutrition and Soil Science (JPNSS) is a Cooperating Journal of the International Union of Soil Science (IUSS). The journal is produced by Wiley-VCH. Topical Divisions of the Journal of Plant Nutrition and Soil Science that are receiving increasing attention are: JPNSS – Topical Divisions Special timely focus in interdisciplinarity: - sustainability & critical zone science. Soil-Plant Interactions: - rhizosphere science & soil ecology - pollutant cycling & plant-soil protection - land use & climate change. Soil Science: - soil chemistry & soil physics - soil biology & biogeochemistry - soil genesis & mineralogy. Plant Nutrition: - plant nutritional physiology - nutrient dynamics & soil fertility - ecophysiological aspects of plant nutrition.