Crops ›› 2017, Vol. 33 ›› Issue (4): 44-49.doi: 10.16035/j.issn.1001-7283.2017.04.008

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Comprehensive Evaluation on Salinity Performance of 10 Alfalfa Varieties by Comprehensive Index and Gray Correlation Methods

Liang Xiao1,Qi Yong2,Lin Yajie1,Shi Yijun1,Cao Weidong3,Liu Zhongkuan4,Liu Guixia1   

  1. 1 College of Life Science,Hebei University,Baoding 071002,Hebei,China
    2 Tianjin Lüyin Landscape and Ecology Construction Co.,Ltd,Tianjin 300383,China;
    3 Institute of Agro-resources and Enviroment,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050051,Hebei,China
    4 Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Fertilizer,Ministry of Agriculture,Beijing 100081,China
  • Received:2017-03-28 Revised:2017-06-25 Online:2017-08-15 Published:2018-08-26
  • Contact: Guixia Liu

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Abstract:

Alfalfa is a major green manure crop, playing an important role in the improvement of saline soil. 10 alfalfa varieties, the Zhongmu No.1, Algonquin, Aohan, Concept, Alfaqueen, WL343HQ, Derby, Sanditi, Sardi 5, Adrenalin were selected to analyze the germination and growing under salt stress in order to provide a theoretical basis for planting suitable varieties in saline soil. Based on the relative germination rate, relative germination speed, biomass of per unit area in the field, plant height, leaf stem ratio, fresh and dried ratio, and the chlorophyll content, aggregative index method and grey system theory correlation analysis were used to make salt-tolerant comprehensive evaluation of the 10 alfalfa varieties. Both methods showed that the salt tolerance of WL343HQ, Zhongmu No.1, Derby and Concept was good, Aohan was worst. Based on laboratory and field alfalfa growth performance, it suggested that grey correlation method was more suitable than comprehensive index method for the evaluation of salt tolerance of alfalfa.

Key words: Medicago sativa, Grey relational analysis, Salt tolerance, Evaluation

Table 1

Experimental materials and their sources"

品种名称Species name 英文名称English name 秋眠级Fall dormancy 千粒重1000-seed weight (g) 原产地Sources
先行者 Concept 3.0 2.85 加拿大
WL343HQ WL343HQ 3.9 2.23 美国
惊喜 Adrenalin 4.0 2.41 美国
德宝 Derby 4~5 2.29 法国
赛迪5 Sardi 5 5 2.42 澳大利亚
三得利 Sanditi 5~6 2.20 法国
皇后 Alfaqueen 2 2.24 美国
阿尔岗金 Algonquin 2~3 2.29 加拿大
敖汉 Aohan 2 2.51 中国内蒙古赤峰市
中苜1号 Zhongmu No.1 3~4 2.17 中国北京

Table 2

Mean value of 7 traits of different alfalfa varieties"

品种
Varieties		 英文名称
English name		 相对发芽率(%)
Relative germination percentage
K1		 相对发芽速度(%)
Relative germination speed
K2		 田间生物量(g/m2)
Biomass in field
K3		 叶绿素含量
SPAD
K4		 株高(cm)
Height
K5		 叶茎比
Leaf/Stem
K6		 干鲜比
Dry weight/
Fresh weight
K7
中苜1号 Zhongmu No.1 97.33 42.00 759.30 64.93 64.29 1.02 0.24
阿尔岗金 Algonquin 76.87 23.30 777.10 64.81 63.90 1.06 0.22
敖汉 Aohan 76.23 14.30 614.60 67.02 60.98 1.04 0.23
先行者 Concept 89.57 32.70 795.70 67.15 60.43 1.12 0.24
皇后 Alfaqueen 88.50 29.80 717.60 64.93 66.80 0.99 0.23
WL343HQ WL343HQ 93.77 46.93 916.40 68.10 60.13 1.03 0.24
德宝 Derby 94.07 33.77 753.20 64.24 67.60 1.06 0.24
三得利 Sanditi 79.80 31.47 727.20 65.35 65.18 1.00 0.24
惊喜 Adrenalin 91.40 30.73 718.40 68.09 58.04 1.10 0.23
赛迪5 Sardi 5 79.40 31.73 724.10 66.10 66.62 1.03 0.23

Table 3

Aggregative indexes of different alfalfa varieties under salt stress"

品种
Varieties		 英文名称
English name		 综合指标
Aggregative index		 耐盐性排序
Order of salt resistance
中苜1号 Zhongmu No.1 147.02 3
阿尔岗金 Algonquin 143.90 5
敖汉 Aohan 119.20 10
先行者 Concept 149.55 2
皇后 Alfaqueen 138.40 8
WL343HQ WL343HQ 169.51 1
德宝 Derby 144.88 4
三得利 Sanditi 138.61 6
惊喜 Adrenalin 138.28 9
赛迪5 Sardi 5 138.46 7

Table 4

Dimensionless processing result of 7 traits of different alfalfa varieties"

品种Varieties 英文名称English name K1 K2 K3 K4 K5 K6 K7
中苜1号 Zhongmu No.1 1.0000 0.8949 0.8286 0.9535 0.9510 0.9107 1.0000
阿尔冈金 Algonquin 0.7897 0.4972 0.8480 0.9517 0.9453 0.9464 0.9167
敖汉 Aohan 0.7832 0.3047 0.6707 0.9841 0.9021 0.9286 0.9583
先行者 Concept 0.9202 0.6960 0.8683 0.9860 0.8939 1.0000 1.0000
皇后 Alfaqueen 0.9092 0.6342 0.7831 0.9535 0.9882 0.8839 0.9583
WL343HQ WL343HQ 0.9634 1.0000 1.0000 1.0000 0.8895 0.9196 1.0000
德宝 Derby 0.9664 0.7195 0.8219 0.9433 1.0000 0.9464 1.0000
三得利 Sanditi 0.8199 0.6705 0.7935 0.9596 0.9642 0.8929 1.0000
惊喜 Adrenalin 0.9390 0.6548 0.7839 0.9999 0.8586 0.9821 0.9583
赛迪5 Sardi 5 0.8161 0.6761 0.7902 0.9706 0.9855 0.9196 0.9583

Table 5

│X0(k)-Xi(k)│"

K1 K2 K3 K4 K5 K6 K7
△1 0.0000 0.1051 0.1714 0.0465 0.0490 0.0893 0.0000
△2 0.2103 0.5028 0.1520 0.0483 0.0547 0.0536 0.0833
△3 0.2168 0.6953 0.3293 0.0159 0.0979 0.0714 0.0417
△4 0.0798 0.3040 0.1317 0.0140 0.1061 0.0000 0.0000
△5 0.0908 0.3658 0.2169 0.0465 0.0118 0.1161 0.0417
△6 0.0366 0.0000 0.0000 0.0000 0.1105 0.0804 0.0000
△7 0.0336 0.2805 0.1781 0.0567 0.0000 0.0536 0.0000
△8 0.1801 0.3295 0.2065 0.0404 0.0358 0.1071 0.0000
△9 0.0610 0.3452 0.2161 0.0001 0.1414 0.0179 0.0417
△10 0.1839 0.3239 0.2098 0.0294 0.0145 0.0804 0.0417

Table 6

Related coefficients of testing varieties and the reference varieties"

K1 K2 K3 K4 K5 K6 K7
ζ1 1.0000 0.7679 0.6698 0.8820 0.8765 0.7956 1.0000
ζ2 0.6231 0.4088 0.6958 0.8780 0.8640 0.8664 0.8067
ζ3 0.6159 0.3333 0.5136 0.9563 0.7803 0.8296 0.8929
ζ4 0.8133 0.5335 0.7253 0.9613 0.7662 1.0000 1.0000
ζ5 0.7929 0.4873 0.6158 0.8820 0.9672 0.7497 0.8929
ζ6 0.9048 1.0000 1.0000 1.0000 0.7588 0.8122 1.0000
ζ7 0.9119 0.5535 0.6612 0.8598 1.0000 0.8664 1.0000
ζ8 0.6587 0.51340 0.6274 0.8959 0.9066 0.7645 1.0000
ζ9 0.8507 0.5018 0.6167 0.9997 0.7109 0.9510 0.8929
ζ10 0.6540 0.5177 0.6236 0.9220 0.9600 0.8122 0.8929

Table 7

Coefficient value, equal-weighted incidence value and its relative weighted value of different alfalfa varieties"

品种Varieties 英文名称English name K1 K2 K3 K4 K5 K6 K7
中苜1号 Zhongmu No.1 1.0000 0.7678 0.6697 0.8819 0.8765 0.7956 1.0000
阿尔岗金 Algonquin 0.6231 0.4087 0.6957 0.8780 0.8640 0.8665 0.8066
敖汉 Aohan 0.6159 0.3333 0.5135 0.9564 0.7802 0.8295 0.8930
先行者 Concept 0.8133 0.5335 0.7252 0.9614 0.7662 1.0000 1.0000
皇后 Alfaqueen 0.7930 0.4873 0.6157 0.8819 0.9671 0.7497 0.8930
WL343HQ WL343HQ 0.9046 1.0000 1.0000 1.0000 0.7588 0.8122 1.0000
三得利 Sanditi 0.6587 0.5133 0.6274 0.8959 0.9066 0.7644 1.0000
惊喜 Adrenalin 0.8508 0.5018 0.6167 0.9996 0.7108 0.9511 0.8930
赛迪5 Sardi 5 0.6540 0.5177 0.6236 0.9221 0.9600 0.8122 0.8930
等权关联度Equal-weighted incidence 0.7825 0.5617 0.6749 0.9237 0.8590 0.8448 0.9379
权重系数Weight coefficient 0.1401 0.1006 0.1208 0.1654 0.1538 0.1513 0.1679

Table 8

The weighted correlation degree of different alfalfa varieties under salt stress"

品种
Varieties		 英文名称
English name		 加权关联度值
Weighted correlation value		 排序
Order
中苜1号 Zhongmu No.1 0.7589 2
阿尔冈金 Algonquin 0.6625 9
敖汉 Aohan 0.6436 10
先行者 Concept 0.7449 4
皇后 Alfaqueen 0.6935 6
WL343HQ WL343HQ 0.8060 1
德宝 Derby 0.7511 3
三得利 Sanditi 0.6921 8
惊喜 Adrenalin 0.7111 5
赛迪5 Sardi 5 0.6931 7
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