Crops ›› 2022, Vol. 38 ›› Issue (1): 70-76.doi: 10.16035/j.issn.1001-7283.2022.01.010

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Comprehensive Evaluation of Two-Rowed Barley Varieties (Lines)

Gao Zhanning1(), Wang Shujie1(), Feng Hui1, Xue Zhenggang1, Yang Yongqian1, Song Xiaopeng1, Jie Yuanfen2   

  1. 1Zhumadian Academy of Agricultural Sciences, Zhumadian 463000, Henan, China
    2College of Food Engineering, Henan Vocational College of Agriculture, Zhengzhou 450000, Henan, China
  • Received:2021-01-13 Revised:2021-04-21 Online:2022-02-15 Published:2022-02-16
  • Contact: Wang Shujie E-mail:gaozhanning0001@163.com;13939672159@139.com

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Abstract:

In order to select and create excellent two-rowed barley germplasm, the agronomic traits of 38 two-rowed barley varieties (lines), including plant height, panicle length, 1000-grain weight, number of grains per panicle, effective panicle number, grain yield, infertility grain number, and grain protein content, were analyzed and comprehensively evaluated. Results showed that the variations of these traits, effective panicle number, grain yield, panicle length, infertility grain number and protein content of the two-rowed barley varieties (lines) were relatively large, while the variations of plant height, 1000-grain weight and grain number per panicle were relatively small. The yield increase effect of two-rowed barley breeding was mainly reflected in the moderate increase of panicle length and effective panicle number. Correlation analysis showed that there were complex correlations among the characters of two-rowed barley, and several characters affected the yield, among which there was a significant positive correlation between effective panicle number and grain yield. At the level of genetic distance of 10, the two-rowed barley varieties (lines) could be divided into two groups: medium stalk and large-grain type, and short stalk and multi-panicle type. Through principal component analysis, the main agronomic traits of 38 two-rowed barley varieties (lines) were divided into four principal components, and their cumulative contribution rate was 85.5807%. Furthermore through the principal component two-dimensional sequencing analysis, scores of the first four principal components were used as indexes to analyze the differences in specific factor traits of 38 two-rowed barley varieties (lines), which provide the basis for the creation of excellent germplasm and the selection of parents.

Key words: Two-rowed barley, Traits, Genetic diversity, Comprehensive evaluation

Table 1

The names and origins of materials tested"

编号Number 品种（系）Variety (line) 来源Origin 编号Number 品种（系）Variety (line) 来源Origin
1 驻大麦3号 中国河南 20 鄂单215 中国湖北
2 驻大麦5号 中国河南 21 岗二 日本
3 驻大麦6号 中国河南 22 沪16 中国上海
4 驻大麦7号 中国河南 23 盐黑1号 中国江苏
5 驻大麦9号 中国河南 24 K09-4 中国上海
6 苏啤3号 中国江苏 25 2013南6-10 中国河南
7 苏啤4号 中国江苏 26 5-68 中国河南
8 盐99175 中国江苏 27 4-45 中国河南
9 苏啤6号 中国江苏 28 7-115 中国河南
10 苏啤7号 中国江苏 29 8-33 中国河南
11 扬农啤5号 中国江苏 30 2011南4-22 中国河南
12 扬农啤11号 中国江苏 31 8-74 中国河南
13 扬农啤12号 中国江苏 32 6-129 中国河南
14 浙皮8号 中国浙江 33 5-34 中国河南
15 浙3521 中国浙江 34 5-55 中国河南
16 浙皮9号 中国浙江 35 驻5-63 中国河南
17 浙皮10号 中国浙江 36 6-128 中国河南
18 鄂大麦105 中国湖北 37 2013南5-22 中国河南
19 鄂大麦072 中国湖北 38 4-272 中国河南

Table 2

The main agronomic traits, protein contents and diversity indexes of two-rowed barley varieties (lines)"

性状
Trait		 均值
Mean		 最大值
Maximum		 最小值
Minimum		 极差
Range		 标准差
Standard deviation		 变异系数
Variable coefficient (%)		 多样性指数
Diversity index (H)
株高Plant height (cm) 87.45 113.94 74.22 39.72 8.38 9.59 1.9018
穗长Panicle length (cm) 6.15 7.68 4.82 2.86 0.73 11.90 2.0209
千粒重1000-grain weight (g) 41.22 49.06 36.51 12.55 3.18 7.71 1.8591
穗粒数Grains per panicle 25.61 30.43 21.53 8.90 2.30 8.97 2.0518
有效穗数Effective panicle number (×104/hm2) 767.00 1027.46 579.27 448.19 106.10 13.83 2.0250
籽粒产量Grain yield (kg/hm2) 6751.57 8797.49 5077.08 3720.41 878.23 13.01 2.0448
不孕粒数Infertility grain number 1.87 4.57 0.80 3.77 0.78 41.94 1.8735
蛋白质含量Protein content (%) 9.90 12.71 7.15 5.56 1.32 13.37 2.0275

Fig.1

The main agronomic traits of two-rowed barley varieties (lines) The left ordinate is used for the traits of plant height, panicle length, 1000-grain weight, grains number per panicle, infertility grain number and protein content, and the secondary ordinate is used for the grain yield and effective panicle number"

Table 3

The correlation analysis of main agronomic traits of two-rowed barley varieties (lines)"

性状
Trait		 株高
Plant
height		 穗长
Panicle
length		 千粒重
1000-grain
weight		 穗粒数
Grains per
panicle		 有效穗数
Effective
panicle number		 籽粒产量
Grain
yield		 不孕粒数
Infertility
grain number
株高Plant height 1 0.4449** -0.0435 -0.2325 -0.2171 -0.259 -0.1332
穗长Panicle length 0.4492** 1 0.1914 0.8141** 0.4635 -0.3332* 0.3702*
千粒重1000-grain weight 0.2214 0.0948 1 -0.1316 -0.3933* -0.0026 -0.2317
穗粒数Grains per panicle 0.1454 0.7089** 0.0772 1 -0.3873* 0.4033* -0.4046*
有效穗数Effective panicle number -0.3053 0.0974 -0.4779** -0.0175 1 0.4763** -0.0443
籽粒产量Grain yield -0.5288** -0.1642 -0.3000 0.1302 0.5082** 1 0.0503
不孕粒数Infertility grain number -0.0277 0.0844 -0.2539 -0.2165 0.2132 -0.0018 1

Fig.2

Clustering scheme of main agronomic traits of two-rowed barley varieties (lines)"

Table 4

Average of agronomic traits in every cluster"

类群
Group		 株高
Plant height
(cm)		 穗长
Panicle length
(cm)		 千粒重
1000-grain
weight (g)		 穗粒数
Grains per
panicle		 有效穗数
Effective pancile number
(×104/hm2)		 籽粒产量
Grain yield
(kg/hm2)		 不孕粒数
Infertility
grain number
Ⅰ 91.24 6.32 41.73 25.67 735.24 6159.15 1.85
Ⅱ 82.30 5.95 40.44 25.54 815.47 7550.25 1.86
平均值Average 86.77 6.14 41.09 25.60 775.36 6854.70 1.85

Table 5

Principal component analysis of main agronomic traits of two-rowed barley varieties (lines)"

性状Trait 第1主成分
Principal component 1		 第2主成分
Principal component 2		 第3主成分
Principal component 3		 第4主成分
Principal component 4
株高Plant height 0.4861 0.3300 0.4065 0.2381
穗长Panicle length 0.0807 0.6085 -0.2122 0.6025
千粒重1000-grain weight 0.3407 0.1463 -0.3036 -0.3129
穗粒数Grains per panicle -0.3865 0.1043 0.6430 0.1040
有效穗数Effective panicle number 0.3181 0.0744 0.5216 -0.3698
籽粒产量Grain yield 0.5967 -0.1994 -0.0240 -0.0123
不孕粒数Infertility grain number 0.1858 -0.6658 0.1069 0.5785
特征值Eigenvalue 2.3475 1.7280 1.2438 0.6714
贡献率Contribution percentage (%) 33.5353 24.6861 17.7681 9.5912
累计贡献率Accumulated contribution percentage (%) 33.5353 58.2214 75.9895 85.5807

Fig.3

Scatterplot based on PCA of two-rowed barley varieties (lines) PC1, PC2, PC3, PC4 represent the score values of the first, second, third and forth principal components, respectively"

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