Table 4 Evolution of the CNA6 population across cycles and the impact of selection on the three traits: grain yield (YLD, kg.ha−1), days to flowering (FLW, days) and plant height (PHT, cm).
From: Population improvement via recurrent selection drives genetic gain in upland rice breeding
Trait | Cycle | Controls | Families | S | Mean Difference | RS | H2 | |||
|---|---|---|---|---|---|---|---|---|---|---|
Evaluated | Selected | Ev-Ctrl | Sel-Ctrl | Cycles | ||||||
YLD | 3 | 3036.3 | 2317.7 | 2514.8 (47) | 197.0 | −718.5 | −521.5 | . | 39.7 | 0.20 |
4 | 2406.8 | 1823.7 | 1958.5 (45) | 135.0 | −583.0 | −448.3 | −556.3 | 20.0 | 0.15 | |
5 | 3890.9 | 3350.4 | 3434.6 (46) | 84.2 | −540.5 | −456.3 | 1476.1 | 4.8 | 0.06 | |
6 | 3536.5 | 3301.6 | 3395.4 (25) | 93.8 | −234.9 | −141.1 | −39.2 | 9.7 | 0.10 | |
7 | 3038.1 | 4166.7 | 4417.3 (38) | 251.0 | 1128.6 | 1379.2 | 1021.9 | 146.0 | 0.41 | |
FLW | 3 | 77 | 80.6 | 81.1 (47) | 0.5 | 3.6 | 4.1 | . | 0.3 | 0.62 |
4 | 87.3 | 92.8 | 92 (45) | −0.9 | 5.5 | 4.7 | 10.8 | −0.6 | 0.73 | |
5 | 71.7 | 71.3 | 71.5 (46) | 0.2 | −0.4 | −0.2 | −20.5 | 0.1 | 0.56 | |
6 | 82.5 | 80.7 | 80.7 (25) | −0.08 | −1.8 | −1.8 | 9.2 | −0.03 | 0.43 | |
7 | 79.2 | 82.5 | 82.2 (38) | −0.2 | 3.3 | 3.0 | 1.6 | −0.2 | 0.47 | |
PHT | 3 | 102.1 | 102.1 | 102 (47) | 0.4 | 0 | −0.1 | . | 0.1 | 0.24 |
4 | 90 | 96 | 95.9 (45) | −0.1 | 6 | 5.9 | −6.5 | −0.03 | 0.24 | |
5 | 113.5 | 116.1 | 116 (46) | −0.5 | 2.6 | 2.5 | 19.7 | −0.07 | 0.15 | |
6 | 108.3 | 120.1 | 120 (25) | 0.2 | 11.8 | 11.7 | 4.7 | 0.02 | 0.15 | |
7 | 104.4 | 105.5 | 106 (38) | 0.4 | 1.1 | 1.4 | −14.4 | 0.21 | 0.40 | |
