Journal of Food, Agriculture and Environment
Vol 10,
Issue 2,2012
Online ISSN: 1459-0263
Print ISSN: 1459-0255
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Effect of phosphorus potassium nutrition on nicotine and nutrient accumulation during topping stage of Nicotiana tabacum L.
Author(s):
Xuelong Wang,
Shuxin Tu *, Xiaoli Wang, Jiahui Kang, Xuhong Tang, Wenjuan Wei, Mengxiang Peng, Guan GuanRecieved Date: 2011-12-02, Accepted Date: 2012-05-04
Abstract:Topping stage of Nicotiana tabacum L. is a key time for development of agricultural measures to promote the quality of leaves. Soil pot experiments were carried out to compare nicotine synthetase activity, nicotine content, and nutrient accumulation at different parts of N. tabacum during topping stage under different P and K nutrition. The results showed that high P treatment increased significantly activity of nicotine-synthesis related enzymes, including putrescine N-methyltransferase (PMT), arginine decarboxylase (ADC), and ornithine decarboxylase (ODC), and nicotine content as well as accumulation of N, P and K. Different from P, high K treatment decreased significantly content of nicotine, activity of PMT, ADC and ODC, and increased K accumulation, but not N and P accumulation. The results indicated that P and K nutrition control the formation of nicotine via regulating the activity of nicotine related synthetases and the nutrient accumulation during the topping stage.
Keywords:Phosphorus,
potassium, nicotine, nicotine related synthetase, topping, Nicotiana tabacum LJournal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 2
Category: Agriculture
Pages: 732-740
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