Crops ›› 2020, Vol. 36 ›› Issue (5): 53-58.doi: 10.16035/j.issn.1001-7283.2020.05.008

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Diversity Analysis of Tartary Buckwheat Germplasms Based on Phenotypic Traits

Yang Xuele(), Zhang Lu, Li Zhiqing, He Luqiu()   

  1. Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, China
  • Received:2020-01-03 Revised:2020-02-11 Online:2020-10-15 Published:2020-10-12
  • Contact: He Luqiu E-mail:1103301542@qq.com;HLQ4692102@163.com

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Abstract:

In order to understand the relationship between yield and agronomic traits of tartary buckwheat, statistical analysis were conducted between the main phenotypic traits and yields of 26 difference tartary buckwheat germplasm resources in this study. The results showed that there were abundant genetic variations among the tartary buckwheat germplasm resources. The variation coefficients of different traits were significantly different, with the largest was primary branch of main stem (33.30%), and the smallest was growth days (6.13%). Correlation analysis showed that varying degrees of correlation were existed among the traits of tartary buckwheat, and most of the traits had positively correlated with the yield. The principal component analysis results showed that the accumulation percentage of 89.55% was from the top three principal components. Cluster analysis divided 26 tartary buckwheat germplasm resources into three categories. The comprehensive traits of the groupⅠwas not outstanding, the groupⅡwas high yield strain, the group Ⅲwas dwarf strain.

Key words: Tartary buckwheat, Phenotypic traits, Yield, Principal component analysis, Cluster analysis

Table 1

Number, name and origin of tested tartary buckwheat germplasm resources"

编号
Number		 种质名称
Germplasm
name		 来源
Origin		 编号
Number		 种质名称
Germplasm
name		 来源Origin
1 重7010 重庆 14 云荞5号 云南
2 WK-05 贵州 15 WK-2014 贵州
3 QKQ2014-15 贵州 16 QKQ-1-6 贵州
4 赤歌 云南 17 迪苦2号 云南
5 云荞4号 云南 18 九江苦荞 陕西
6 系选-07 四川 19 KQ10-02 陕西
7 蒙0912-5 内蒙古 20 蒙1213-6 内蒙古
8 苦荞1307-1178 贵州 21 通苦荞3号 内蒙古
9 赤苦荞1号 内蒙古 22 赤苦-02 内蒙古
10 KQ11-3 陕西 23 KQ12-03 陕西
11 酉荞1号 重庆 24 定苦2011-003 甘肃
12 西荞5号 四川 25 昭苦4号 云南
13 额乌系选 四川 26 迪苦3号 云南

Table 2

Variation of phenotypic traits of tartary buckwheat germplasm resources"

性状
Trait		 最大值
Minimum		 最小值
Maximum		 平均值
Mean		 标准差
Standard deviation		 极差
Range		 变异系数
Variation coefficient (%)		 遗传多样性指数
Genetic diversity index
生育日数Growth days (d) 87.0 66.0 72.6 4.45 21.0 6.13 1.84
株高Plant height (cm) 128.8 71.3 99.5 15.89 57.5 15.97 1.86
主茎分枝数Number of main stem branches 6.4 2.2 4.2 1.38 4.2 33.30 1.88
主茎节数Node number of main stems 15.5 11.7 14.0 1.16 3.8 8.33 1.89
单株粒重Grain weight per plant (g) 4.2 2.1 3.2 0.54 2.1 17.05 1.94
千粒重1000-grain weight (g) 23.7 15.9 19.7 1.99 7.81 10.11 1.91
产量Yield (kg/hm2) 2 042.3 1 060.0 1 615.0 311.36 982.3 19.28 1.90

Table 3

Correlation coefficient of phenotypic traits of tartary buckwheat germplasm resources"

性状
Trait		 生育日数
Growth
days		 株高
Plant
height		 主茎分枝数
Number of main
stem branches		 主茎节数
Node number
of main stem		 单株粒重
Grain weight
per plant		 千粒重
1000-grain
weight		 产量
Yield
生育日数Growth days -1
株高Plant height -0.233 1
主茎分枝数Number of main stem branches -0.234 0.376** 1
主茎节数Node number of main stems -0.298* 0.612** 0.575** 1
单株粒重Grain weight per plant -0.010 0.503** 0.314* 0.519** 1
千粒重1000-grain weight -0.051 0.468** 0.440** 0.465** 0.604** 1
产量Yield -0.032 0.518** 0.347* 0.502** 0.844** 0.655** 1

Table 4

Principal component analysis of phenotypic traits of tartary buckwheat germplasm resources"

性状Trait 主成分1 Component 1 主成分2 Component 2 主成分3 Component 3
生育日数Growth days -0.043100 0.948614 0.206475
株高Plant height 0.850305 0.136405 0.272922
主茎分枝数Number of main stem branches 0.773492 0.238072 -0.568200
主茎节数Node number of main stem 0.851034 0.359300 -0.090620
单株粒重Grain weight per plant 0.890826 -0.194660 0.239752
千粒重1000-grain weight 0.888096 -0.211710 0.044407
产量Yield 0.946381 -0.215130 0.042722
特征值Eigen value 4.530000 1.230000 0.510000
贡献率Contribution (%) 64.650000 17.620000 7.280000
累计贡献率Cumulative percentage (%) 64.650000 82.270000 89.550000

Fig.1

Cluster dendrogram of tartary buckwheat germplasm resources based on seven agronomic traits"

Table 5

Agronomic traits of various groups of tartary buckwheat germplasm resources"

性状Trait 第Ⅰ类群Group Ⅰ 第Ⅱ类群Group Ⅱ 第Ⅲ类群Group Ⅲ
均值
Mean		 方差
Variance		 变异系数
Variation
coefficient (%)		 均值
Mean		 方差
Variance		 变异系数
Variation
coefficient (%)		 均值
Mean		 方差
Variance		 变异系数
Variation
coefficient (%)
生育日数Growth days (d) 71.0 6.40 3.56 71.9 4.10 2.82 74.3 42.01 8.72
株高Plant height (cm) 99.5 200.99 14.25 112.1 163.33 11.40 86.9 72.14 9.78
主茎分枝数
Number of main stem branches		 4.4 3.20 41.12 5.1 0.55 14.47 3.0 0.40 20.98
主茎节数
Node number of main stems		 14.2 1.23 7.80 14.8 0.51 4.85 13.0 0.78 6.81
单株粒重
Grain weight per plant (g)		 3.2 0.02 3.97 3.6 0.18 11.60 2.7 0.08 10.76
千粒重1000-grain weight (g) 19.9 2.82 8.46 21.4 1.37 5.47 17.8 0.90 5.32
产量Yield (kg/hm2) 1 640.6 6 977.81 5.09 1 936.5 7 932.36 4.60 1 278.3 16 191.74 9.95
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