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首页> 外文会议>International Plant Nutrition Colloquium >Difference of nitrate accumulation in petiole of spinach cultivars and its nutritional and physiological basis
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Difference of nitrate accumulation in petiole of spinach cultivars and its nutritional and physiological basis

机译：菠菜品种岩土中硝酸盐积累的差异及其营养和生理基础

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Pot experiments using three spinach cultivars were carried out to study nitrate accumulation in different organs and its relationship to biomass, nitrate distribution in cell and the nitrate reductase activity (NRA). The results showed that the nitrate concentration in the petiole was the highest among different organs. The difference of nitrate concentration in the petiole could reflect the difference of nitrate accumulation among cultivars. The in vivo NRA, the ratio of the in vivo to in vitro NRA,the nitrate metabolic pool size (NMPS), and the ratio of NMPS to nitrate storage pool size (NSPS) of the blade were all negatively correlated with the nitrate concentration in the petioles. The too small NMPS was the reason why the petiole has much higher nitrate concentration than that in the blade.
机译：进行了使用三种菠菜品种的罐实验，以研究不同器官的硝酸盐积累及其与生物量的关系，细胞硝酸盐分布和硝酸还原酶活性（NRA）。结果表明，叶柄中硝酸盐浓度在不同器官中最高。岩石中硝酸盐浓度的差异可以反映品种中硝酸盐积累的差异。体内NRA，体内与体外NRA的比例，硝酸盐代谢池大小（NMP）和NMP与硝酸盐储存池大小（NSP）的比例与叶片的硝酸盐浓度呈负相关叶柄。太小的NMPS是叶柄具有比叶片中更高的硝酸盐浓度更高的原因。

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