Table 1.
Summary of the QTL for grain yield detected in 18 bi-parental populations
| Population code |
Water stressed |
Well watered |
Heritability |
Genetic variance per QTL** |
||||
|---|---|---|---|---|---|---|---|---|
| No. of QTL | R2 (%)* | No. of QTL | R2 (%)* | Water stressed | Well watered | Water stressed (%) | Well watered (%) | |
| 6x1008 |
2 |
6.10 |
4 |
21.60 |
0.24 |
0.42 |
12.76 |
12.92 |
| 6x1015 |
0 |
0.00 |
7 |
42.70 |
0.26 |
0.35 |
0.00 |
17.48 |
| 6x1016 |
- |
- |
5 |
37.90 |
0.00 |
0.57 |
0.00 |
13.37 |
| 6x1017 |
- |
- |
7 |
65.70 |
0.00 |
0.47 |
0.00 |
19.97 |
| 6x1018 |
1 |
7.70 |
5 |
34.00 |
0.26 |
0.52 |
29.96 |
13.13 |
| 6x1019 |
- |
- |
6 |
35.20 |
0.00 |
0.38 |
0.00 |
15.60 |
| 6x1020 |
2 |
6.10 |
5 |
24.00 |
0.33 |
0.55 |
9.27 |
8.66 |
| 6x1021 |
9 |
48.80 |
7 |
71.70 |
0.21 |
0.58 |
25.34 |
17.69 |
| 6x1023 |
- |
- |
3 |
28.50 |
0.08 |
0.38 |
0.00 |
25.13 |
| 6x1024 |
- |
- |
5 |
43.70 |
0.02 |
0.44 |
0.00 |
19.73 |
| 6x1028 |
- |
- |
7 |
50.00 |
0.00 |
0.40 |
0.00 |
17.86 |
| 6x1115 |
0 |
0.00 |
3 |
11.10 |
0.22 |
0.29 |
0.00 |
12.76 |
| 6x1116 |
3 |
9.30 |
5 |
62.40 |
0.24 |
0.49 |
12.92 |
25.47 |
| 6x1117 |
0 |
0.00 |
2 |
13.70 |
0.27 |
0.48 |
0.00 |
14.27 |
| 6x1118 |
0 |
0.00 |
2 |
11.70 |
0.40 |
0.26 |
0.00 |
22.50 |
| 6x1120 |
0 |
0.00 |
3 |
26.30 |
0.11 |
0.51 |
0.00 |
17.19 |
| 6x1121 |
1 |
3.90 |
6 |
60.60 |
0.32 |
0.23 |
12.19 |
43.91 |
| 6x1122 |
0 |
0.00 |
1 |
1.50 |
0.36 |
0.37 |
0.00 |
4.05 |
| Total |
18.00 |
81.90 |
83.00 |
642.30 |
3.32 |
7.68 |
102.43 |
321.69 |
| Mean | 1.50 | 6.83 | 4.61 | 35.68 | 0.18 | 0.43 | 5.69 | 17.87 |
*R2 = the total phenotypic variance explained by all QTL.
** The genetic variance is the percent phenotypic variance explained by a single QTL divided by heritability of a trait.
Maize populations and environments are described in detail in Table 3.