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养分管理:作为在气候变化条件下提高硬粒小麦颖果品质和产量潜力的万灵药。

Nutrient management: as a panacea to improve the caryopsis quality and yield potential of durum wheat ( L.) under the changing climatic conditions.

作者信息

Melash Anteneh Agezew, Bogale Amare Assefa, Bytyqi Bekir, Nyandi Muhoja Sylivester, Ábrahám Éva Babett

机构信息

Kálmán Kerpely Doctoral School of Crop Production and Horticultural Science, University of Debrecen, Debrecen, Hungary.

Department of Horticulture, College of Agriculture and Environmental Science, Debark University, Debark, Ethiopia.

出版信息

Front Plant Sci. 2023 Aug 28;14:1232675. doi: 10.3389/fpls.2023.1232675. eCollection 2023.

Abstract

The increasing human population and the changing climate, which have given rise to frequent drought spells, pose a serious threat to global food security, while identification of high-yielding drought-tolerant genotypes coupled with nutrient management remains a proficient approach to cope with these challenges. An increase in seasonal temperature, recurring drought stress, and elevated atmospheric CO are alarmingly affecting durum wheat production, productivity, grain quality, and the human systems it supports. An increase in atmospheric carbon dioxide can improve wheat grain yield in a certain amount, but the right amount of nutrients, water, and other required conditions should be met to realize this benefit. Nutrients including nitrogen, silicon, and sulfur supply could alleviate the adverse effects of abiotic stress by enhancing antioxidant defense and improving nitrogen assimilation, although the effects on plant tolerance to drought stress varied with nitrogen ionic forms. The application of sewage sludge to durum wheat also positively impacts its drought stress tolerance by triggering high accumulation of osmoregulators, improving water retention capacity in the soil, and promoting root growth. These beneficial effect of nutrients contribute to durum wheat ability to withstand and recover from abiotic stress conditions, ultimately enhance its productivity and resilience. While these nutrients can provide benefits when applied in appropriate amounts, their excessive use can lead to adverse environmental consequences. Advanced technologies such as precision nutrient management, unmanned aerial vehicle-based spraying, and anaerobic digestion play significant roles in reducing the negative effects associated with nutrients like sewage sludge, zinc, nanoparticles and silicon fertilizers. Hence, nutrient management practices offer significant potential to enhance the caryopsis quality and yield potential of durum wheat. Through implementing tailored nutrient management strategies, farmers, breeders, and agronomists can contribute to sustainable durum wheat production, ensuring food security and maintaining the economic viability of the crop under the changing climatic conditions.

摘要

不断增长的人口和气候变化导致干旱频发,对全球粮食安全构成严重威胁,而鉴定高产耐旱基因型并结合养分管理仍是应对这些挑战的有效方法。季节性温度升高、反复出现的干旱胁迫以及大气二氧化碳浓度升高,正惊人地影响着硬粒小麦的生产、生产力、籽粒品质以及其所支持的人类系统。大气二氧化碳浓度增加在一定程度上可以提高小麦籽粒产量,但要实现这一益处,应满足适量的养分、水分和其他所需条件。包括氮、硅和硫在内的养分供应可以通过增强抗氧化防御和改善氮同化来减轻非生物胁迫的不利影响,尽管不同氮离子形态对植物耐旱胁迫的影响有所不同。将污水污泥施用于硬粒小麦也通过触发渗透调节剂的高积累、提高土壤保水能力和促进根系生长,对其耐旱胁迫能力产生积极影响。这些养分的有益作用有助于硬粒小麦抵御非生物胁迫条件并从中恢复的能力,最终提高其生产力和恢复力。虽然这些养分适量施用时会带来益处,但过度使用会导致不良环境后果。精准养分管理、基于无人机的喷洒和厌氧消化等先进技术在减少与污水污泥、锌、纳米颗粒和硅肥等养分相关的负面影响方面发挥着重要作用。因此,养分管理措施在提高硬粒小麦颖果品质和产量潜力方面具有巨大潜力。通过实施量身定制的养分管理策略,农民、育种者和农艺师可以为硬粒小麦的可持续生产做出贡献,确保粮食安全,并在不断变化的气候条件下维持作物的经济可行性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a421/10493400/9294b8025cf0/fpls-14-1232675-g001.jpg

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