Table 3.
Estimate of genetic parameters, broad-sense heritability, genetic advance for milling and appearance quality characteristics and grain yield of 100 rice accessions evaluated at Fumesua-Kumasi, Ghana in 2018
| Trait | Mean | Range | σ2g | σ2e | σ2p | GCV (%) | ECV (%) | PCV (%) | H2 (%) | GA (%) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | Max | ||||||||||
| MGrL | 6.63 | 5.64 | 7.93 | 0.15 ± 0.02** | 0.06 ± 0.01** | 0.21 | 5.8 | 3.8 | 7.0 | 70.6 | 0.21 |
| MGrW | 2.25 | 1.95 | 2.65 | 0.01 ± 0.00** | 0.01 ± 0.00** | 0.02 | 4.7 | 3.6 | 6.0 | 62.9 | 0.02 |
| L/W | 2.96 | 2.32 | 3.77 | 0.07 ± 0.01** | 0.03 ± 0.00** | 0.10 | 9.0 | 5.4 | 10.5 | 73.8 | 0.10 |
| PGWC | 34.26 | 1.59 | 100.00 | 676.14 ± 112.14** | 307.28 ± 30.88** | 983.42 | 75.9 | 51.2 | 91.5 | 68.8 | 983.42 |
| DC | 10.11 | 0.67 | 34.17 | 30.85 ± 5.26** | 16.05 ± 1.65** | 46.90 | 55.0 | 39.6 | 67.8 | 65.8 | 46.90 |
| BRR | 70.08 | 63.00 | 75.00 | 2.57 ± 0.95** | 9.72 ± 1.00** | 12.29 | 2.3 | 4.4 | 5.0 | 20.9 | 12.29 |
| MRR | 62.06 | 51.40 | 67.70 | 4.16 ± 1.11** | 8.92 ± 0.92** | 13.08 | 3.3 | 4.8 | 5.8 | 31.8 | 13.08 |
| DM | 11.41 | 7.00 | 22.00 | 1.87 ± 0.91* | 11.41 ± 1.29** | 13.28 | 12.0 | 29.6 | 31.9 | 14.1 | 13.28 |
| HRR | 44.15 | 25.30 | 63.10 | 24.66 ± 9.10* | 99.87 ± 10.35** | 124.53 | 11.2 | 22.6 | 25.3 | 19.8 | 124.53 |
| BroGr | 17.91 | 4.60 | 34.50 | 13.97 ± 6.54* | 79.69 ± 8.20** | 93.67 | 20.9 | 49.8 | 54.0 | 14.9 | 93.67 |
| 100-HRW | 1.87 | 1.50 | 2.40 | 0.01 ± 0.00** | 0.03 ± 0.00** | 0.05 | 6.2 | 9.6 | 11.4 | 29.6 | 0.05 |
| GY | 4.46 | 1.6 | 7.8 | 0.64 ± 0.21** | 2.13 ± 0.22** | 2.54 | 2.77 | 17.9 | 32.7 | 37.3 | 23.1 |
σ2g Genotype variance; σ2e Environmental variance; σ2p Phenotype variance; GCV Genotype coefficient of variation; ECV Error coefficient of variation; PCV Phenotype coefficient of variation; H2 Broad sense heritability; GA Genetic advance as percent of mean
MGrL Milled grain length; MGrW Milled grain width; L/W Milled grain length to width ratio; PGWC Percentage of grain with chalkiness; DC Degree of chalkiness; BRR Brown rice recovery; MRR Milled rice recovery; DM Degree of milling; HRR Head rice recovery; BroGr Percentage of Broken rice grains; 100-HRW Hundred Head rice weight; GY Grain Yield
*Significant at 0.05 level of probability; **Significant at 0.01 level of probability