关键词:甜高粱; 性状; 环境因子; 反应度 Responsiveness of Sweet Sorghum in Yield and Quality Related Traits to Environmental Factors TANG Chao-Chen, LUO Feng, LI Xin-Yu, PEI Zhong-You, GAO Jian-Ming, SUN Shou-Jun* College of Agronomy & Resources and Environment, Tianjin Agricultural University, Tianjin 300384, China
AbstractThe present study aims to elucidate the effects of environmental factors on the traits related to yield and quality in sweet sorghum, to quantify the responsive degree of sweet sorghum traits to the key factors, to analyze the requirements of environmental factors for high yield and quality, and to construct prediction models of yield. Based on the data of five traits and environmental factors obtained from six provinces of China in 2013 and 2014, we studied the responsiveness of sweet sorghum in five traits to environmental factors by the methods of RBF analysis and stepwise regression analysis. The results demonstrated that the environment was the dominant factor affecting the sweet sorghum traits, with greater effects than genotype and G×E interaction. Soil factors exerted more significant effects on sweet sorghum traits than meteorological factors. Precipitation, diurnal temperature difference, soil pH, organic matter, total nitrogen, and available potassium were important environmental factors determining fresh yield, sugar brix, juice yield, sugar yield and stem diameter in sweet sorghum. Organic matter, pH value and total nitrogen content of soil were the three most important environmental factors. The prediction models for fresh weight yield and total sugar yield were verified by significant test with high determination coefficient R2. The paper provides an accurate and reliable theoretical basis for ecological region division, planting management, high yield and good quality in sweet sorghum.
表1 试点环境因子 Table 1 Environment factors in experimental locations
试点 Location
年份 Year
环境因子 Environment factor
x1
x2
x3
x4
x5
x6
x7
x8
x9
x10
天津1 Tianjin 1
2013
422.9
24.5
947.1
2221.6
9.3
8.41
2.66
0.151
143.0
63.4
天津2 Tianjin 2
2013
486.4
24.0
810.4
2066.8
9.1
8.29
2.09
0.116
159.6
69.7
天津3 Tianjin 3
2013
414.4
21.8
870.9
1833.7
9.3
8.49
2.35
0.126
153.6
74.0
天津4 Tianjin 4
2013
250.2
20.7
772.6
1467.5
9.4
8.35
2.66
0.145
160.0
75.0
安徽1 Anhui 1
2013
714.1
24.6
1213.1
2793.8
8.1
5.46
2.79
0.107
75.8
21.2
安徽2 Anhui 2
2013
613.0
25.0
1018.1
2421.1
7.7
5.15
2.84
0.122
63.8
38.6
安徽3 Anhui 3
2013
450.7
23.3
975.6
1969.7
8.1
5.13
2.53
0.114
50.6
37.8
海南 Hainan
2013
119.6
21.2
540.8
1311.6
5.4
6.76
2.97
0.073
116.8
31.3
黑龙江Heilongjiang
2013
486.7
20.6
925.5
1360.2
8.9
7.97
3.90
0.205
155.0
36.4
新疆 Xinjiang
2014
228.4
13.1
1129.5
513.9
11.0
8.46
2.57
0.086
193.6
58.2
内蒙古 Inner Mongolia
2014
162.1
22.2
1251.7
1565.8
12.3
8.54
1.72
0.068
165.2
12.3
x1: precipitation (mm); x2: daily mean temperature (℃); x3: sunshine hours (h); x4: accumulated temperature (≥ 10℃); x5: diurnal temperature difference (℃); x6: pH; x7: organic matter (%); x8: total nitrogen (%); x9: available potassium (mg kg-1); x10: available phosphorus (mg kg-1). x1: 降水量; x2: 日均温度; x3: 日照时数; x4: ≥ 10℃有效积温; x5: 昼夜温差; x6: pH值; x7: 有机质; x8: 全氮; x9: 有效钾; x10: 速效磷。
表1 试点环境因子 Table 1 Environment factors in experimental locations
表2 Table 2 表2(Table 2)
表2 甜高粱各性状方差分析结果 Table 2 ANOVA analysis results of traits
性状 Trait
项目 Item
处理 Treatment
基因型 Genotype
环境 Environment
互作效应 G× E effect
误差 Error
(df=32)
(df=2)
(df=10)
(df=20)
(df=66)
鲜重产量(y1) Fresh weight yield
SS
1312074.26
194741.07
1033543.44
83789.75
34494.89
F-value
186.30* *
197.75* *
8.01* *
P(%)
14.84
78.77
6.39
糖锤度(y2) Sugar brix
SS
617.55
57.76
494.21
65.58
51.64
F-value
36.91* *
63.17* *
4.19* *
P(%)
9.35
80.03
10.62
出汁液率(y3) Juice yield
SS
2433.04
198.41
1861.31
373.32
496.55
F-value
13.19* *
24.74* *
2.48* *
P(%)
8.16
76.50
15.34
相对总含糖量(y4) Total sugar yield
SS
9252.41
704.15
7839.50
708.76
303.14
F-value
76.66* *
170.69* *
7.72* *
P(%)
7.61
84.73
7.66
茎粗(y5) Stem diameter
SS
18.04
1.22
14.79
2.03
0.37
F-value
107.92* *
261.82* *
17.97* *
P(%)
6.76
81.98
11.26
SS is sum of squares; P is the percentage to total sum of squares. * Significant at the 0.05 probability level; * * Significant at the 0.01 probability level. SS表示平方和, P表示占处理变异平方和的百分比; * 表示在0.05区间达到显著水平, * * 表示在0.01区间达到极显著水平。
表2 甜高粱各性状方差分析结果 Table 2 ANOVA analysis results of traits
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