Crops ›› 2018, Vol. 34 ›› Issue (3): 57-60.doi: 10.16035/j.issn.1001-7283.2018.03.009

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Correlation and Cluster Analysis of Agronomic Traits in Wheat Lines

Zhang Bin1,Li Jinxiu1,Wang Zhen1,Feng Hao2,Li Jinbang1   

  1. 1 Nanyang Academy of Agricultural Sciences, Nanyang 473000, Henan, China
    2 Seed Technical Service Station of Wancheng District, Nanyang 473000, Henan, China
  • Received:2017-12-06 Revised:2018-04-13 Online:2018-06-20 Published:2018-06-20

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Abstract:

In order to research the correlations between yield and agronomic traits of wheat. Eighteen wheat lines were analysed to determine the correlation between yield and agronomic traits based on correlation analysis, variation analysis, cluster analysis. The results showed that there was significant difference between the yield and its agronomic traits of different wheat lines. Variation analysis indicated large aberrance coefficient of plant height and 1000-kernel weight; There was significant positive correlation between yield and the maximum tiller; The spike number had positive correlation with yield and the maximum tiller; The kernels per spike had negative correlation with 1000-kernel weight and plant height. The result of cluster analysis showed that these 18 wheat lines were classified to 4 groups. And according to the characteristics of each group, different improvement goals were put forward. Therefore, attention should be paid to the correlation and coordination of agronomic traits of the parents in the wheat breeding process.

Key words: Wheat, Agronomic trait, Variation analysis, Correlation analysis, Cluster analysis

Table 1

Statistical analysis of agronomic traits of wheat lines"

品系
Line		 株高(cm)
Plant height		 茎蘖数(万/hm2)
Tiller number		 有效穗数(万/hm2)
Spike number		 穗粒数
Kernels per spike		 千粒重(g)
1000-kernel weight		 产量(kg/hm2)
Yield
1 70±2.61f 1 648.5±33.91a 601.5±17.20ab 41.3±1.56abc 44.7±1.22cd 7 752.0±16.09a
2 69±0.66fg 1 357.5±24.06def 549.0±42.30ab 37.0±1.48ef 42.6±1.20ef 6 898.5±33.09g
3 82±1.57a 1 494.0±30.51c 598.5±58.50ab 39.1±1.21cde 42.4±0.85ef 6 699.0±21.00i
4 72±2.72ef 1 372.5±10.85def 589.5±46.36ab 35.9±1.39f 45.3±0.72c 6 769.5±46.58h
5 66±3.36g 1 348.5±32.43def 586.5±16.09ab 43.2±1.13a 45.4±1.31c 7 108.5±37.77f
6 76±1.87cd 1 491.0±46.86c 583.5±31.21ab 37.7±0.30ef 46.0±1.40bc 7 377.0±32.05d
7 72±1.55ef 1 353.0±32.08def 571.5±19.97ab 39.2±1.30cde 46.5±1.15bc 6 607.5±24.88j
8 74±2.69de 1 372.5±14.91def 562.5±40.15ab 38.4±1.11def 41.0±0.89fg 6 421.5±30.41l
9 71±1.18ef 1 399.5±20.35d 604.5±30.05ab 36.8±1.32ef 47.5±1.11b 6 762.0±30.43h
10 76±1.28cd 1 327.5±12.53f 568.5±31.43ab 38.8±1.05cde 41.5±0.82efg 6 517.5±35.38k
11 78±1.68bc 1 546.5±45.83b 622.5±48.59a 37.5±1.30ef 46.6±1.30bc 7 545.0±12.12c
12 81±1.97ab 1 339.5±35.04ef 562.5±39.74ab 38.9±1.08cde 43.2±0.85de 6 499.5±39.36k
13 74±2.17de 1 375.5±30.05def 613.5±47.70ab 42.9±0.36ab 39.6±1.57gh 7 096.5±12.00f
14 82±3.14a 1 338.0±23.57ef 561.0±26.04ab 37.1±2.43ef 39.8±1.51gh 7 245.0±6.24e
15 66±2.72g 1 390.5±22.07de 606.0±40.71ab 38.5±1.25def 53.3±0.75a 7 243.5±39.89e
16 62±1.57h 1 323.0±46.78f 541.5±20.42b 38.9±1.76cde 39.0±0.20h 6 702.0±52.85i
17 79±1.31abc 1 405.5±12.17d 612.0±47.03ab 38.8±1.68cde 34.8±0.69j 6 895.5±21.93g
18 80±2.10ab 1 377.0±31.32def 600.0±27.78ab 40.5±1.74bcd 36.7±1.41i 7 612.5±17.30b

Table 2

Variation analysis of agronomic traits"

项目Item 株高(cm)
Plant height		 茎蘖数(万/hm2)
Tiller number		 有效穗数(万/hm2)
Spike number		 穗粒数
Kernels per spike		 千粒重(g)
1000-kernel weight		 产量(kg/hm2)
Yield
平均值Mean 73.9 1 403.3 585.3 38.9 43.1 6 986.3
变异范围Range 62~82 1 323.0~1 648.5 541.5~622.5 35.9~43.2 34.8~53.3 6 421.5~7 752.0
变异幅度Variability 20.0 325.5 81.0 7.3 18.5 1 330.5
标准差Standard deviation 5.90 5.79 1.59 1.98 4.38 405.78
变异系数Coefficient of variation (%) 7.98 6.19 4.08 5.09 10.16 5.81

Table 3

Correlation coefficient of agronomic traits"

性状Trait 株高Plant height 茎蘖数Tiller number 有效穗数Spike number 穗粒数Kernels per spike 千粒重1000-kernel weight 产量Yield
株高 1.000
最高分蘖 0.130 1
有效穗数 0.214 0.555* 1
穗粒数 -0.158 0.078 0.237 1.000
千粒重 -0.396 0.242 0.190 -0.196 1
产量 0.033 0.612** 0.517* 0.251 0.108 1

Fig.1

Dendrogram of cluster analysis for main agronomy traits"

Table 4

Means of agronomic traits of four groups"

类群
Group		 品系
Line		 株高(cm)
Plant
height		 茎蘖数
(万/hm2)
Tiller number		 有效穗数
(万/hm2)
Spike number		 成穗率(%)
Ear bearing tiller
percentage		 穗粒数
Kernels
per spike		 千粒重(g)
1000-kernel
weight		 产量
(kg/hm2)
Yield
Ⅰ 1、3、6、11 76.5 1 545.0 601.5 38.9 38.9 44.9 7 343.3
Ⅱ 4、9、15 69.7 1 387.5 600.0 43.2 37.1 48.7 6 925.0
Ⅲ 5、13、14、17、18 76.2 1 368.9 594.6 43.4 40.5 39.3 7 191.6
Ⅳ 2、7、8、10、12、16 72.3 1 345.5 559.3 41.6 38.5 42.3 6 607.8
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