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首页> 外文期刊>Journal of Plant Nutrition >Targeting nitrogen use efficiency for sustained production of cereal crops
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Targeting nitrogen use efficiency for sustained production of cereal crops

机译：靶向氮气利用效率持续生产谷物作物

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Increased application of inorganic nitrogen has been the key component responsible for growth in cereal production. Due to continuously increasing application of Nitrogen (N) and its lower use efficiency along with environmental and health implications of leftover N, improving nitrogen use efficiency (NUE) through management and genetic manipulation require immediate attention. The way N is uptaken through better root architecture and improved transporters and assimilated and remobilized into storage organ influences NUE. Partitioning of N between leaves and stems, photosynthetic efficiency, rubisco activity and senescence of leaf decide N utilization efficiency. Genetic manipulation to improve NUE requires information on the extent of exploitable genetic variability and their genetic control, however, limited information about these traits limits development of efficient genotypes. MAS for QTLs associated with key enzymes involved in N uptake and utilization or transgenic by overexpressing the enzymatic gene shows great promise in the future. Furthermore, the interaction of NUE and other plant traits should be evaluated.
机译：增加了无机氮的应用是负责谷物生产生长的关键组分。由于氮气（n）的持续增加以及其较低的使用效率以及剩余的N剩余的环境和健康影响，通过管理和遗传操作改善氮气利用效率（NUE）需要立即关注。通过更好的根架构和改进的运输器和改进的运输工具并将其同化并将其与储存器官的影响的方式被膨胀。叶片与茎之间的n，光合效率，鲁米斯科活动和叶片的衰老决定n利用效率。遗传操纵来改善NUE需要有​​关可利用遗传变异性和其遗传控制的程度的信息，但是有关这些特征的有限信息限制了有效基因型的发展。通过过表达酶基因涉及N涉及N吸收和利用或转基因的QTL相关的MAS，在未来表现出巨大的承诺。此外，应评估NUE和其他植物特征的相互作用。

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