Crops ›› 2020, Vol. 36 ›› Issue (6): 123-127.doi: 10.16035/j.issn.1001-7283.2020.06.017

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Relationship of β-amylase Accumulation in Barley Grain during Filling Stage and Meteorological Factors

Zhou Yuancheng(), Chen Aiping(), Cao Yongli, Wang Zhen, Zhao Yukun, Hou Donghong, Xie Lili   

  1. Institute of Wheat Research, Shanxi Agricultural University (Shanxi Academy of Agricultural Sciences), Linfen 041000, Shanxi, China
  • Received:2020-03-20 Revised:2020-05-08 Online:2020-12-15 Published:2020-12-09
  • Contact: Chen Aiping E-mail:zyc8135@163.com;492851793@qq.com

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Abstract:

In order to determine the relationship between the accumulation dynamic of β-amylase in barley grain during filling stage and the meteorological factors, the correlation analysis was carried out using five barley varieties in two years. The results showed that the activity of β-amylase in barley grain showed the change of increasing, decreasing and increasing during filling stage, and the maximum value occurred at maturity stage. Partial correlation analysis and multiple regression analysis showed β-amylase activity in barley grain was significantly positively correlated with total accumulated temperature, significantly correlated with interaction of total sunshine and average daily sunshine, significantly negatively correlated with the daily average temperature and average daily sunshine, extremely significantly negatively correlated with the interaction of total accumulated temperature and daily average temperature and the interaction of total rainfall and daily average sunshine. The partial correlation coefficients from big to small in order is total accumulated temperature, interaction between total precipitation and daily average sunshine, interaction between total accumulated temperature and daily average temperature, interaction between total sunshine and daily average sunshine interactions, daily average sunshine, and daily average temperature.

Key words: Barley, Grain filling stage, β-amylase, Meteorological factors

Table 1

Variation of meteorological factors between years during barley grain grouting"

年份
Year		 积温Accumulated temperature (℃) 总积温
Total accumulated temperature (℃)		 日均温
Daily average
temperature (℃)		 降水量Rainfall (mm) 总雨量
Total
rainfall
(mm)		 日均雨量
Daily average
rainfall
(mm)		 总日照时数
Total
sunshine
hour (h)		 日均日照时数
Mean daily
average sunshine
hour (h)
5月上旬
Early May		 5月中旬
Mid-May		 5月下旬
Late May		 5月上旬
Early May		 5月中旬
Mid-May		 5月下旬
Late May
2013 206.9 216.5 212.2 869.8 22.89 3.5 2.2 76.2 83.5 2.2 270.2 7.11
2014 184.0 197.7 245.2 829.5 21.83 55.1 3.7 12.5 71.3 1.9 332.8 8.76

Fig.1

β- amylase activity in 2013 and 2014"

Table 2

Correlation coefficients between the factors (n=40)"

性状Characteristic Y X1 X2 X3 X4 X5 X6 X7 X8 X9
Y 1.000 0.468** 0.330* 0.209 0.009 0.418** -0.107 -0.429** -0.179 0.333*
X1 1.000 0.694** 0.834** 0.505** 0.935** -0.268 -0.989** -0.795** 0.842**
X2 1.000 0.436** 0.172 0.476** -0.843** -0.752** -0.375* 0.294
X3 1.000 0.857** 0.826** -0.128 -0.831** -0.972** 0.800
X4 1.000 0.561** -0.026 -0.527** -0.896** 0.605**
X5 1.000 -0.034 -0.907** -0.855** 0.973**
X6 -1.000 -0.356* -0.026* 0.217
X7 -1.000 -0.797** 0.815**
X8 -1.000 0.862**
X9 1.000

Table 3

Partial correlation coefficients between each factors (n=40)"

性状Characteristic Y X1 X2 X6 X7 X8 X9
Y 1.000 0.483** -0.393* -0.405* -0.433** -0.462** -0.407*
X1 1.000 -0.879** -0.918** -0.982** -0.852** -0.905**
X2 -1.000 -0.983** -0.886** -0.949** -0.957**
X6 -1.000 -0.943** -0.953** -0.990**
X7 -1.000 -0.868** -0.947**
X8 -1.000 -0.958**
X9 -1.000
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