Crops ›› 2020, Vol. 36 ›› Issue (5): 93-97.doi: 10.16035/j.issn.1001-7283.2020.05.014

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The Genetic Study of Yield Traits in Edible Sunflower

Yang Haifeng(), Duan Xueyan, Wei Ling, Liu Bo   

  1. Wheat Research Institute, Shanxi Agricultural University (Shanxi Academy of Agricultural Sciences), Linfen 041000, Shanxi, China
  • Received:2020-03-05 Revised:2020-05-27 Online:2020-10-15 Published:2020-10-12

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Abstract:

Using male-sterile line 17-A26 to cross with restorer line 17-C19, constructed six generations genetic populations, including P1, P2, F1, F2, B1 and B2. In present study genetic variation and heritability of yield governing traits namely head diameter, seed number per plant, seed setting rate, 100-seed weight, seed length, and seed width were studied. The results showed that all the six traits were quantitatively inherited traits, showed genetic variation and a narrow heritability was also reordered for all these traits. Genetic progress showed that 100-seed weight, seed length, seed number per plant, seed width should be selected in early generation according to phenotype, and head diameter should be selected in late generation, and seed setting rate should be selected on multiple environments in late generation.

Key words: Edible sunflower, Yield trait, Heritability

Table 1

Frequency distribution of grain length in six generations mm"

世代
Generation		 总次数
Sum of frenquency		 极差
Range		 组中值Group median 平均值±标准差
Average±Standard deviation		 变异系数
Coefficient of variation (%)
12.1 13.6 15.1 16.6 18.1 19.6 21.1 22.6 24.1
P1 10 3.9 2 3 4 1 22.25±1.36 6.1
P2 10 2.6 4 4 2 13.45±0.92 6.8
F1 10 3.8 2 4 3 1 21.61±1.26 5.8
F2 102 11.1 1 6 12 16 30 19 12 5 1 18.07±2.39 13.2
B1 10 5.6 4 1 1 3 1 19.10±2.11 11.0
B2 10 5.5 1 4 4 1 15.29±1.99 13.0

Table 2

Statistical results of six yield traits in F2 generation"

性状Trait 平均值
Average		 标准差
Standard deviation		 极差
Range		 变异系数
Coeffcient of variation (%)		 偏度
Skewness		 峰度
Kurtorsis
盘径Head diameter (cm) 17.28 2.25 11.6 13.03 -0.080 0.289
单株总粒数Seed number per plant 771.79 94.13 409.0 14.42 0.248 -0.321
结实率Seed setting rate (%) 62.74 7.60 33.0 12.11 -0.064 -0.636
百粒重100-seed weight (g) 14.32 1.57 8.8 10.92 -0.788 1.741
粒长Grain length (mm) 18.07 2.39 11.1 13.22 0.016 -0.250
粒宽Grain width (mm) 8.08 0.74 3.5 8.41 0.050 -0.646

Fig.1

Frequency distribution of six yield traits in F2 population Interval is left open and right close on the abscissa"

Table 3

Genetic variations of six traits"

性状
Trait		 广义遗传率h2B 狭义遗传率h2N 方差比h2N/h2B
Ratio of variances (%)
估值Estimate (%) 排序Ranking 估值Estimate (%) 排序Ranking
盘径Head diameter 59.6 5 19.0 5 33.3
单株总粒数Seed number per plant 61.4 4 42.1 4 68.5
结实率Seed setting rate 40.2 6 8.3 6 20.6
百粒重100-seed weight 86.3 1 83.2 1 96.4
粒长Grain length 72.2 2 51.9 3 71.8
粒宽Grain width 70.1 3 56.8 2 81.0

Table 4

Genetic progress of six yield traits"

项目
Item		 盘径
Head
diameter		 单株总粒数
Seed number
per plant		 结实率
Seed
setting rate		 百粒重
100-seed
weight		 粒长
Grain
length		 粒宽
Grain
width
广义遗传进度实际值ⅠGS(h2B)
Actual value of generalized genetic progressⅠ		 2.7656 119.0589 6.2906 2.7815 3.5546 1.0699
广义遗传进度相对值ⅠGS(h2B, %)
Relative value of generalized genetic progressⅠ		 16.0000 18.2400 10.0300 19.4100 19.6600 12.1400
狭义遗传进度实际值ⅡGS(h2N)
Actual value of narrow sense genetic progressⅡ		 0.8816 81.6348 1.2988 2.6816 2.5552 0.8669
狭义遗传进度相对值ⅡGS(h2N, %)
Relative value of narrow sense genetic progressⅡ		 5.1000 12.5100 2.0700 18.7200 14.1300 9.8400
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