Assessment of Nitrogen Use Efficiency in Algerian Saharan Maize Populations for Tolerance under Drought and No-Nitrogen Stresses

Riache, Meriem; Revilla, Pedro; Malvar, R. A.; Djemel, Abderahmane; Chemlal, Azeddine; Mefti, Mohamed

doi:10.3390/agronomy12051123

Cited by 6 publications

(2 citation statements)

References 98 publications

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“…Increasing NUE is an essential soil–plant interactive trait that has been under consideration for many years because it explains the overall grain production and also estimates the economic return. Generally, NUE is defined as the sum of N uptake efficiency and N utilization efficiency, thus explaining that increase in NUE boosts the crop yield, biomass, and quality ( Congreves et al, 2021 ; Manschadi and Soltani, 2021 ; Riache et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Recent trends in nitrogen cycle and eco-efficient nitrogen management strategies in aerobic rice system

Farooq

Wang

Uzair³

et al. 2022

Front. Plant Sci.

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Rice (Oryza sativa L.) is considered as a staple food for more than half of the global population, and sustaining productivity under a scarcity of resources is challenging to meet the future food demands of the inflating global population. The aerobic rice system can be considered as a transformational replacement for traditional rice, but the widespread adaptation of this innovative approach has been challenged due to higher losses of nitrogen (N) and reduced N-use efficiency (NUE). For normal growth and developmental processes in crop plants, N is required in higher amounts. N is a mineral nutrient and an important constituent of amino acids, nucleic acids, and many photosynthetic metabolites, and hence is essential for normal plant growth and metabolism. Excessive application of N fertilizers improves aerobic rice growth and yield, but compromises economic and environmental sustainability. Irregular and uncontrolled use of N fertilizers have elevated several environmental issues linked to higher N losses in the form of nitrous oxide (N2O), ammonia (NH3), and nitrate (NO3–), thereby threatening environmental sustainability due to higher warming potential, ozone depletion capacities, and abilities to eutrophicate the water resources. Hence, enhancing NUE in aerobic rice has become an urgent need for the development of a sustainable production system. This article was designed to investigate the major challenge of low NUE and evaluate recent advances in pathways of the N cycle under the aerobic rice system, and thereby suggest the agronomic management approaches to improve NUE. The major objective of this review is about optimizing the application of N inputs while sustaining rice productivity and ensuring environmental safety. This review elaborates that different soil conditions significantly shift the N dynamics via changes in major pathways of the N cycle and comprehensively reviews the facts why N losses are high under the aerobic rice system, which factors hinder in attaining high NUE, and how it can become an eco-efficient production system through agronomic managements. Moreover, it explores the interactive mechanisms of how proper management of N cycle pathways can be accomplished via optimized N fertilizer amendments. Meanwhile, this study suggests several agricultural and agronomic approaches, such as site-specific N management, integrated nutrient management (INM), and incorporation of N fertilizers with enhanced use efficiency that may interactively improve the NUE and thereby plant N uptake in the aerobic rice system. Additionally, resource conservation practices, such as plant residue management, green manuring, improved genetic breeding, and precision farming, are essential to enhance NUE. Deep insights into the recent advances in the pathways of the N cycle under the aerobic rice system necessarily suggest the incorporation of the suggested agronomic adjustments to reduce N losses and enhance NUE while sustaining rice productivity and environmental safety. Future research on N dynamics is encouraged under the aerobic rice system focusing on the interactive evaluation of shifts among activities and diversity in microbial communities, NUE, and plant demands while applying N management measures, which is necessary for its widespread adaptation in face of the projected climate change and scarcity of resources.

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Section: Introductionmentioning

confidence: 99%

Recent trends in nitrogen cycle and eco-efficient nitrogen management strategies in aerobic rice system

Farooq

Wang

Uzair³

et al. 2022

Front. Plant Sci.

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“…In maize, some of the descent lines from the cross of the Algerian landraces Sidi Maamar × Aougrout were tolerant to drought and no-nitrogen stress [7]. Sukto et al [8] carried out mass selection in the small-ear waxy corn populations of Thailand to improve the carotenoid content and resistance to downy mildew; also in Thailand, Dermail et al [9] crossed three supersweet corn lines with eight waxy ones to generate 48 F1 hybrids.…”

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confidence: 99%

Utilizing Genetic Resources for Agronomic Trait Improvement

et al. 2023

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Genetic analyses of stay green for tolerance to water stress and nitrogen deficiency in Algerian Saharan maize populations

et al. 2023

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Delayed senescence could contribute to maintain yield under water stress and low nitrogen stress. Landraces from arid areas can provide favorable alleles for stay green under stress. The objectives of this study were to estimate varietal and heterosis effects of Algerian Saharan populations and their crosses for stay-green under water stress and no-nitrogen fertilization and to identify the most promising populations as sources of stay-green under stress. Six Algerian maize populations were evaluated in a diallel under water stress (300 mm irrigation) versus control (600 mm) and no-nitrogen fertilization versus 120 kg/ha N fertilization. Both varietal and specific heterosis were involved in delayed senescence under stress. Breeding programs could capitalize additive components by using the populations IZM or IGS with favorable varietal effects for delayed senescence under nitrogen stress, or dominance effects by using the population AOR with favorable heterotic effects for plant color under water and nitrogen stresses. Based on specific heterosis, under water stress conditions with no-nitrogen supply, the most promising cross was AOR × IZM for delayed senescence, while IZM × BAH (with no-nitrogen supply), and SHH × BAH (with nitrogen fertilizer), will allow a longer maintenance of the plant coloration. We suggest reciprocal recurrent selection with these populations for developing drought-tolerant and low nitrogen hybrids to improve stay-green.

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Assessment of Nitrogen Use Efficiency in Algerian Saharan Maize Populations for Tolerance under Drought and No-Nitrogen Stresses

Cited by 6 publications

References 98 publications

Recent trends in nitrogen cycle and eco-efficient nitrogen management strategies in aerobic rice system

Recent trends in nitrogen cycle and eco-efficient nitrogen management strategies in aerobic rice system

Utilizing Genetic Resources for Agronomic Trait Improvement

Genetic analyses of stay green for tolerance to water stress and nitrogen deficiency in Algerian Saharan maize populations

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