Genotypic Variability in Root System Architecture and Its Association With Fe and Zn Biofortification in Wheat (Triticum aestivum L.)

IF 2.8 3区农林科学 Q1 AGRONOMY

Journal of Plant Nutrition and Soil Science Pub Date : 2025-06-04 DOI:10.1002/jpln.12020

Hafsa, Aysha Kiran, Abdul Wakeel, Farooq Ahmad

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引用次数: 0

Abstract

Background

Wheat has an inherently low concentration of Fe and Zn; therefore, enhancing their concentrations in grains has become vital to mitigate micronutrient malnutrition in many developing countries through biofortification strategies.

Aims

This study aims to explore variability in root architectural traits and their roles in Fe and Zn uptake leading to its accumulation in grains.

Methods

A rhizobox-based experiment was conducted to evaluate the effect of Fe- and Zn-deficient and -sufficient conditions on wheat root system architecture (RSA). Four treatments of Fe and Zn fertilizer combinations with four replications were used in these experiments (without Fe and Zn, with Zn and without Fe, without Zn and with Fe, and with Fe and Zn). Further, in a pot experiment, physiological attributes, growth, yield, and uptake of Fe and Zn were determined in the selected eight wheat varieties based on rhizobox trial results.

Results

Significant genotypic variability was noted in RSA traits of wheat genotypes, and some interesting correlations have been identified. Zinc-efficient varieties Zincol-16 and Akbar-19 revealed better RSA traits like enhanced root diameter, lateral root density, and root length as compared to inefficient varieties like Ujala-16 and TD-1. The Zincol-16 articulated maximum improvement in grain Fe and Zn content, that is, 53.9 mg Fe kg⁻¹ concentration in the treatment with soil Fe application and 33.18 mg Zn kg⁻¹ found in treatment with soil application of Zn. Yield attributes were significantly improved by the combined application of Fe and Zn, as the pot experiment showed that maximum thousand-grain weight (47.3 g) and grain yield (12.4 g per pot) were found in Akbar-19.

Conclusion

This study suggests that genetic variability in RSA correlates with increased Fe and Zn concentrations in grains. Therefore, by using RSA attributes for Fe and Zn biofortification in wheat, these findings may be used in breeding programs to develop new biofortified varieties to mitigate micronutrient malnutrition.

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小麦根系结构的基因型变异及其与铁锌生物强化的关系

小麦本身具有低浓度的铁和锌；因此，提高它们在谷物中的浓度对于通过生物强化战略缓解许多发展中国家的微量营养素营养不良至关重要。目的探讨水稻根系结构性状的变异及其在铁锌吸收和籽粒积累中的作用。方法采用根箱试验方法，研究缺锌和缺铁条件对小麦根系构型的影响。试验采用铁锌肥组合4个处理，共4个重复（不加铁、加锌和不加铁、不加锌和加铁、加铁和加锌）。在盆栽试验中，以根箱试验结果为基础，测定了8个小麦品种的生理性状、生长、产量和铁、锌的吸收。结果小麦基因型的RSA性状存在显著的基因型变异，并发现了一些有趣的相关性。锌高效品种zincol16和Akbar-19的根径、侧根密度和根长等RSA性状优于低效品种Ujala-16和TD-1。zincoll -16对籽粒铁和锌含量的提高最大，土壤施铁处理的Fe和Zn浓度分别为53.9 mg和33.18 mg kg -1。铁锌配施显著提高了产量属性，盆栽试验结果表明，阿克巴-19千粒重最高（47.3 g），产量最高（12.4 g /盆）。结论遗传变异与籽粒铁、锌浓度升高有关。因此，通过利用小麦铁和锌生物强化的RSA属性，这些发现可以用于培育新的生物强化品种，以减轻微量营养素营养不良。

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.