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Journal of Zhejiang University SCIENCE B 2006 Vol.7 No.1 P.79~84

10.1631/jzus.2006.B0079


Relationship between malt qualities and β-amylase activity and protein content as affected by timing of nitrogen fertilizer application


Author(s):  Chen Jin-xin, Dai Fei, Wei Kang, Zhang Guo-ping

Affiliation(s):  Department of Agronomy, Zhejiang University, Hangzhou 310029, China

Corresponding email(s):   zhanggp@zju.edu.cn

Key Words:  Barley, Nitrogen fertilizer, &beta, -amylase, Malt quality


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Chen Jin-xin, Dai Fei, Wei Kang, Zhang Guo-ping. Relationship between malt qualities and β-amylase activity and protein content as affected by timing of nitrogen fertilizer application[J]. Journal of Zhejiang University Science B, 2006, 7(1): 79~84.

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author="Chen Jin-xin, Dai Fei, Wei Kang, Zhang Guo-ping",
journal="Journal of Zhejiang University Science B",
volume="7",
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pages="79~84",
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publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2006.B0079"
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%T Relationship between malt qualities and β-amylase activity and protein content as affected by timing of nitrogen fertilizer application
%A Chen Jin-xin
%A Dai Fei
%A Wei Kang
%A Zhang Guo-ping
%J Journal of Zhejiang University SCIENCE B
%V 7
%N 1
%P 79~84
%@ 1673-1581
%D 2006
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2006.B0079

TY - JOUR
T1 - Relationship between malt qualities and β-amylase activity and protein content as affected by timing of nitrogen fertilizer application
A1 - Chen Jin-xin
A1 - Dai Fei
A1 - Wei Kang
A1 - Zhang Guo-ping
J0 - Journal of Zhejiang University Science B
VL - 7
IS - 1
SP - 79
EP - 84
%@ 1673-1581
Y1 - 2006
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2006.B0079


Abstract: 
The effects of different timing of N fertilizer application at the same rate on grain &beta;-amylase activity, protein concentration, weight and malt quality of barley were studied. Grain &beta;-amylase activity and protein concentration were significantly higher in treatments where all top-dressed N fertilizer was applied at booting stage only or equally applied at two-leaf stage and booting stage than in the treatment where all top-dressed N fertilizer was applied at two-leaf age stage only. On the other hand, grain weight and malt extract decreased with increased N application at booting stage. There were obvious differences between barley varieties and experimental years in the grain and malt quality response to the timing of N fertilizer application. It was found that grain protein concentration was significantly and positively correlated with &beta;-amylase activity, but significantly and negatively correlated with malt extract and Kolbach index. The effect of grain protein concentration on malt quality was predominant over the effect of grain &beta;-amylase activity.

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