【作者】 陈爱国； 王树声； 申国明； 梁晓芳； 付秋娟；

【Author】 Chen Aiguo Wang Shusheng Shen Guoming Liang Xiaofang Fu Qiujuan (Qingzhou Tobacco Research Institute of China National Tobacco Company, Qingdao, 266101)

【机构】 中国烟草总公司青州烟草研究所；

【摘要】 烟叶成熟期间的碳氮代谢和化学成分的变化对烟叶内在品质和香吃味的协调具有重要意义,本研究以NC89为材料,结果表明打顶后29天至43天,还原糖和总糖含量显著下降,总氮含量成熟期一直缓慢下降,而总植物碱含量打顶后29至36天急剧上升,随后缓慢增加;烟碱的合成与可溶性糖的转化和氮代谢密切相关。pH值反应了糖碱的变化趋势,P和K的含量均下降,可能受K+再分配和再转移,和P向根系转移的影响。更多还原

【Abstract】 Metabolism of hydrocarbon and nitride and changes of main chemical components were significant to tobacco quality and flavor quality. In this study, results using NC89 indicated that reduced sugars, total sugars were obviously decreased between the 29th day and the 43th day after topping, while the contents of total nitrogen were slowly declined during ripeness. However, total alkali contents in leaves were rapidly rose from the 29th day to the 36th day after topping, then that slowly increased. Anabolism of total alkali had closely relations with soluble sugar and metabolism of nitride. PH values responded the change trends of sugars and alkali. Contents of Phosphorus and Potassium were decreased, which possibly influenced by redistribution and retransfer of Potassium and enrichment of Phosphorus within root.更多还原