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Acta Agronomica Sinica ›› 2019, Vol. 45 ›› Issue (5): 798-805.doi: 10.3724/SP.J.1006.2019.84110

• RESEARCH NOTES • Previous Articles    

Screening and comprehensive evaluation of aluminum-toxicity tolerance during germination stage in 52 varieties (lines) of pea germplasm

Cui CUI,Chuang CHENG,Yu-Feng ZHAO,Huan-Huan GAO,Rui-Li WANG,Liu-Yan WANG,Qing-Yuan ZHOU()   

  1. College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China
  • Received:2018-08-21 Accepted:2019-01-12 Online:2019-05-12 Published:2019-02-19
  • Contact: Qing-Yuan ZHOU E-mail:zhouqy2005@163.com
  • Supported by:
    This study was supported by the China Agriculture Research System(CARS-12);the Science and Technology Committee of Chongqing(cstc2015shmszx80026)

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Abstract:

With increasing acidification of soil, aluminum toxicity has become one of the important stress factors affecting seed germination quality and crop yield. The purpose of this study is to explore the characteristics of aluminum toxicity tolerance in different genotypes of Pisum sativum, and establish the comprehensive evaluation system for screening and breeding new varieties with aluminum toxicity tolerance. The identification of tolerance at germination stage was performed according to the comprehensive tolerance coefficient of aluminum toxicity (CAC) value, the average subordinate function value (ASF value), the comprehensive evaluation value of aluminum toxicity tolerance (A-value) in correlation analysis, frequency analysis, principal component analysis, cluster analysis and stepwise regression analysis. Fifty-two pea varieties collected from different places were treated with 40 mg L -1 Al 3+ screened in the pretest. There were significant differences between treatment and control groups in germination rate, germination energy, germination index, root length, bud length, root dry weight, bud dry weight, root-shoot ratio, and the genetic diversity index ranging from 1.43-2.03 and 1.51-2.06, respectively, showing extensive genetic variation. Cluster analysis was carried out based on A value, exhibiting that the tested cultivars were roughly divided into groups with three aluminum toxicity tolerance grades. The first group including two varieties is tolerant to aluminum toxicity, the second group including 19 varieties is sensitive to aluminum toxicity, and the last group containing 31 other varieties is very sensitive to aluminum toxicity. Combined with the optimal regression equation, seven indexes of pea seed germination rate, germination potential, germination index, bud length, root length, bud dry weight and root dry weight were used to comprehensively evaluate and identify the aluminum toxicity tolerance of pea during germination period. Through comprehensive evaluation and cluster analysis, germplasm C175 and C145 were screened out with strong tolerance to aluminum toxicity in germinating stage, which can be used as important resources for breeding near varieties and studying the mechanism of tolerance to aluminum toxicity in pea.

Key words: pea, germination period, aluminum toxicity tolerance, comprehensive evaluation, germplasm resources screening

Table 1

Germplasm of vegetable pea in this experiment"

编号
Code		 品种(系)
Variety (line)		 来源
Origin		 编号
Code		 品种(系)
Variety (line)		 来源
Origin		 编号
Code		 品种(系)
Variety (line)		 来源
Origin
C001 白豌豆 重庆白市驿 C103 荷兰豆 河北香河 C146 意大利新品种 四川成都
C002 白豌豆 山东寿光 C104 奥珍食荚菜豌豆 河北香河 C147 604豌豆 重庆南川
C003 朱砂红1 山东寿光 C105 永盛珍宝 河北香河 C150 地方品种6 重庆南川
C023 中豌5号 河北香河 C106 地方品种1 内蒙古赤峰 C152 地方品种7 重庆北碚
C032 甜豆 江西九江 C107 地方品种2 山东即墨 C154 朱砂红2# 重庆北碚
C039 苏豌1号 江苏南通 C108 美国肥仔豌豆苗 广东广州 C155 地方品种8 重庆北碚
C040 苏豌2号 江苏南通 C109 台中11号 广东广州 C157 地方品种9 重庆白市驿
C041 08-064 江苏南通 C110 台湾长寿豌豆 宁夏银川 C158 黑眼豌豆# 重庆白市驿
C051 特选11号 江西九江 C117 无须豌豆尖3 四川仁寿 C159 地方品种10 重庆合川
C052 双荚饶平玻璃豆 广西南宁 C136 食荚大菜豌6号 四川成都 C163 地方品种11 四川仁寿
C054 翠珍甜豌豆 广东广州 C137 食荚大菜豌1号 四川成都 C170 浙豌1号 浙江安吉
C055 高级甜脆食荚豆 广东广州 C138 无须豆尖1号 四川成都 C173 软荚荷兰豆 广东广州
C056 韩国甜脆豆 广东广州 C139 成豌7号 四川成都 C174 UY039 广东广州
C078 苏豌6号 江苏南通 C140 成豌8号 四川成都 C175 UY099 广东广州
C079 奇珍76 江苏南通 C141 818荷兰豆 福建福州 C177 甜脆双荚荷兰豆 广东广州
C094 中豌9号 河北香河 C142 地方品种4 四川仁寿 C178 麦豆 广东广州
C095 中豌10号 河北香河 C144 地方品种5 四川仁寿
C096 中豌4号 河北香河 C145 食荚大菜豌# 四川仁寿

Table 2

Effects of different concentrations of aluminum on pea germination"

处理
Treatment
(mg L-1)		 C154 C145 C158
芽长
BL(cm)		 根长
RL (cm)		 芽长
BL (cm)		 根长
RL (cm)		 芽长
BL (cm)		 根长
RL (cm)
0 4.10±0.03 ab 3.56±0.14 a 2.90±0.09 a 2.56±0.19 b 4.32±0.01 a 2.72±0.04 b
20 4.33±0.41 a 2.82±0.11 b 3.02±0.04 a 3.21±0.04 a 4.55±0.04 a 3.01±0.15 a
40 4.50±0.03 a 1.59±0.02 c 2.98±0.04 a 2.60±0.07 b 3.94±0.23 b 2.76±0.12 b
80 1.73±0.14 b 1.29±0.04 d 2.91±0.05 a 1.64±0.02 c 2.24±0.03 c 1.82±0.01 c
160 0.19±0.03 c 1.08±0.01d e 0.13±0.01 b 1.24±0.01 d 0.34±0.05 d 1.37±0.01 d

Table 3

Mean variance analysis and parameters of pea germplasm during seed germination under aluminum stress"

参数
Parameter		 发芽率
GR (%)		 发芽势
GE (%)		 发芽指数
GI		 根长
RL (cm)		 芽长
BL (cm)		 根干重
RDW (g)		 芽干重
SDW (g)		 根冠比
RSR
对照CK
均值Mean 85.34** 81.92** 27.99** 4.21** 2.87** 0.01** 0.01** 1.12**
最大值Max. 100.00 100.00 43.67 7.15 4.63 0.02 0.02 3.40
最小值Min. 30.00 22.50 7.68 0.81 0.32 0 0 0.56
变异系数CV (%) 19.04 22.58 27.26 34.72 33.63 34.82 41.24 38.21
遗传多样性指数H° 1.51 1.61 2.04 2.04 2.01 2.06 2.02 1.69
处理Treatment
均值Mean 88.65** 85.05** 29.67** 2.85** 2.94** 0.01** 0.01** 0.71**
最大值Max 100.00 100.00 43.97 5.30 4.24 0.02 0.03 2.53
最小值Min 27.50 22.50 7.68 0.66 0.36 0 0 0.45
变异系数CV (%) 15.23 19.27 25.04 29.98 27.69 32.24 36.89 43.03
遗传多样性指数H° 1.54 1.55 1.94 2.02 2.00 1.95 2.01 1.43

Table 4

Correlation matrix of AC of different characteristics"

参数
Parameter		 发芽率
GR		 发芽势
GE		 发芽指数
GI		 根长
RL		 芽长
BL		 根干重
RDW		 芽干重
SDW		 根冠比
RSR
发芽率GR 1
发芽势GE 0.91** 1
发芽指数GI 0.93** 0.96** 1
根长RL 0.52** 0.55** 0.56** 1
芽长BL 0.67** 0.69** 0.71** 0.82** 1
根干重RDW 0.62** 0.68** 0.67** 0.86** 0.89** 1
芽干重SDW 0.62** 0.64** 0.66** 0.80** 0.97** 0.91** 1
根冠比RSR -0.21 -0.15 -0.20 -0.20 -0.48 -0.10 -0.45 1

Table 5

Two principal component factor scores, comprehensive evaluation values and their predictive values for 52 peas"

编号Code PC1 PC2 A值
A-value		 排序
Rank		 P 编号
Code		 PC1 PC2 A值
A-value		 排序
Rank		 P
C001 -1.58 -0.59 -1.19 47 -1.20 C117 1.13 -0.30 0.74 9 0.75
C002 -0.88 1.28 -0.43 28 -0.43 C136 -0.25 -1.48 -0.39 26 -0.38
C003 -0.21 -0.03 -0.15 21 -0.16 C137 0.02 -1.09 -0.14 18 -0.15
C023 -0.10 -0.51 -0.15 20 -0.16 C138 0.08 -0.27 0.02 17 0.02
C032 -1.81 0.40 -1.21 48 -1.21 C139 -0.35 -0.61 -0.33 25 -0.33
C039 -0.27 -0.56 -0.27 23 -0.25 C140 -1.00 0.07 -0.69 37 -0.67
C040 -1.12 -0.42 -0.84 42 -0.84 C141 -0.79 0.85 -0.43 29 -0.42
C041 -0.46 0.66 -0.22 22 -0.22 C142 -0.73 -0.06 -0.52 31 -0.53
C051 -1.28 -0.31 -0.93 44 -0.94 C144 -1.79 0.61 -1.16 46 -1.16
C052 -1.39 2.32 -0.64 34 -0.62 C145 7.50 -2.72 4.85 2 4.85
C054 -1.13 0.71 -0.68 36 -0.68 C146 0.80 0.87 0.68 10 0.68
C055 1.19 1.12 0.99 6 0.99 C147 -0.93 -0.02 -0.65 35 -0.66
C056 -2.70 2.90 -1.46 49 -1.46 C150 -0.74 -0.54 -0.59 33 -0.61
C078 -0.19 -0.06 -0.14 19 -0.14 C152 5.24 1.74 3.90 3 3.90
C079 -1.48 2.33 -0.70 39 -0.69 C154 0.59 -1.00 0.27 13 0.28
C094 0.82 -0.03 0.57 11 0.57 C155 -3.54 -1.18 -2.64 52 -2.64
C095 0.19 -0.50 0.06 16 0.07 C157 -0.90 -0.48 -0.70 38 -0.69
C096 -0.64 -0.59 -0.53 32 -0.53 C158 –0.69 0.46 -0.42 27 -0.43
C103 -2.51 0.72 -1.64 50 -1.64 C159 2.51 -0.14 1.73 4 1.73
C104 2.67 -1.53 1.64 5 1.65 C163 -2.46 0.31 -1.67 51 -1.67
C105 1.12 0.35 0.83 7 0.82 C170 1.14 0.14 0.82 8 0.82
C106 -1.18 -0.45 -0.89 43 -0.88 C173 -1.52 -0.39 -1.11 45 -1.12
C107 -0.34 -0.60 -0.33 24 -0.32 C174 0.51 -0.03 0.35 12 0.35
C108 -0.40 -1.48 -0.50 30 -0.50 C175 11.11 2.43 8.10 1 8.10
C109 0.57 -1.57 0.17 14 0.18 C177 0.26 -0.15 0.16 15 0.15
C110 -1.18 0.30 -0.78 41 -0.78 C178 -0.92 -0.87 -0.77 40 -0.77

Fig. 1

Cluster analysis based on AC value for 52 peas germplasm"

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