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- W953325518 abstract "该研究以‘鸭梨’ב京白梨’杂交后代高酸个体（GS-Y14）和低酸个体（DS-Y182）为试材,系统分析了果实发育过程中有机酸积累动态及相关酶活性的变化特征.结果表明：（1）GS-Y14属于苹果酸优势型果实,DS-Y182属于柠檬酸优势型果实,且成熟时两者在总酸含量上表现出的差异主要是由于苹果酸含量的差异所致.（2）苹果酸酶（NADP-ME）是苹果酸形成的关键酶,在梨果实发育过程中NADP ME起分解作用,且该酶活性在两类个体果实发育后期差异显著,即NADP-ME是引起GS-Y14和DS-Y182中苹果酸含量不同的主要原因,进而导致成熟时两类个体果实酸积累的差异.（3）梨果实磷酸烯醇式丙酮酸羧化酶（PEPC）活性的升高有利于其柠檬酸的合成,而柠檬酸合酶（CS）是影响其柠檬酸含量变化的关键酶；细胞质乌头酸酶（Cyt-ACO）和线粒体乌头酸酶（Mit-ACO）早期对果实柠檬酸的含量变化影响较小,后期异柠檬酸脱氢酶（NAD-IDH）活性对柠檬酸在后代个体中的积累有一定影响." @default.
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- W953325518 date "2014-01-01" @default.
- W953325518 modified "2023-09-28" @default.
- W953325518 title "‘鸭梨’ב京白梨’杂交后代果实有机酸积累差异及相关酶活性的研究" @default.
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