Effects of Nitrogen Application Level on Endogenous Hormones, Yield and Quality of Tartary Buckwheat

LUO Qing-hua; LI Zhen-zhou; LIN Jun-qing; WANG Yan; ZHOU Liang; HUANG Xiao-yan; HUANG Kai-feng; CHEN Qing-fu

doi:10.19303/j.issn.1008-0384.2019.03.003

Volume 34 Issue 3

Jun. 2019

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Article Navigation > Fujian Journal of Agricultural Sciences > 2019 > 34(3): 271-277

LUO Qing-hua, LI Zhen-zhou, LIN Jun-qing, WANG Yan, ZHOU Liang, HUANG Xiao-yan, HUANG Kai-feng, CHEN Qing-fu. Effects of Nitrogen Application Level on Endogenous Hormones, Yield and Quality of Tartary Buckwheat[J]. Fujian Journal of Agricultural Sciences, 2019, 34(3): 271-277. doi: 10.19303/j.issn.1008-0384.2019.03.003

Citation:

LUO Qing-hua, LI Zhen-zhou, LIN Jun-qing, WANG Yan, ZHOU Liang, HUANG Xiao-yan, HUANG Kai-feng, CHEN Qing-fu. Effects of Nitrogen Application Level on Endogenous Hormones, Yield and Quality of Tartary Buckwheat[J]. Fujian Journal of Agricultural Sciences, 2019, 34(3): 271-277. doi: 10.19303/j.issn.1008-0384.2019.03.003

Citation:

LUO Qing-hua, LI Zhen-zhou, LIN Jun-qing, WANG Yan, ZHOU Liang, HUANG Xiao-yan, HUANG Kai-feng, CHEN Qing-fu. Effects of Nitrogen Application Level on Endogenous Hormones, Yield and Quality of Tartary Buckwheat[J]. Fujian Journal of Agricultural Sciences, 2019, 34(3): 271-277. doi: 10.19303/j.issn.1008-0384.2019.03.003

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Effects of Nitrogen Application Level on Endogenous Hormones, Yield and Quality of Tartary Buckwheat

doi: 10.19303/j.issn.1008-0384.2019.03.003

Technology Research Center of Buckwheat Industry, Guizhou Normal University, Guiyang, Guizhou 550001, China

Received Date: 2018-11-20
Rev Recd Date: 2019-02-10
Publish Date: 2019-03-28

Abstract

Abstract

Objective Effects of varied levels of nitrogen fertilization on the endogenous hormones, yield and quality of tartary buckwheat were studied. Method The tarary buckwheat variety of Qianku 6 (QK6) plants were treated with different nitrogen applications (i.e., CK of blank control, LN at 50 kg·hm^-2, LN at 100 kg·hm^-2, and HN at 150 kg·hm^-2). Conditions of the rhizosphere soil as well as the root morphology, endogenous hormones in leaves, and grain yield and quality of the buckwheat plants were monitored for analysis. Result Increased nitrogen raised the contents of available nitrogen, phosphorus, and potassium in the rhizosphere soil initially and followed by a decline. The length, surface area and volume of the roots showed a similar trend that peaked under MN and minimalized under CK. But little effect was observed on root diameter. ACC, IAA, Z+ZR and polyamine had the same trend of increasing and declining, but ABA the opposite. The plant height, main stem count, grain weight and count per plant, 1000-grain weight and grain yield of QK6 also increased initially and decreased later, but no significant effect on the number of main stem nodes. Again, the contents of protein, total dietary fiber, rutin, quercetin and kaempferol of the plants increased at first and then decreased with increasing nitrogen. The highest content of flavonoids was found in the grains of the plants treated under CK and the lowest in those under HN. Conclusion The nitrogen application at a rate of 100 kg·hm^-2 appeared appropriate for QK6 cultivation rendering a maximized fertilization benefit. Excessive or insufficient application on nitrogen would lead to a reduction on the grain yield and quality of buckwheat plants.
- tartary buckwheat,
- nitrogen,
- endogenous hormones,
- yield,
- quality

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References(30)

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