Table 2.
Mean (±SD) 2C genome size (in pg) of each maize population, 1C value (in Mbp), range of genome size, percentage of knob heterochromatin, vegetative cycle and seed mass. Populations with different letters have significantly different means of genome size (P < 0.05) *Data of vegetative cycle and seed mass were kindly donated by Ing. Agr. Melchiorre from the Facultad de Agronomía, Universidad de Buenos Aires.
| Maize landraces/vouchers | 2C DNA (pg) mean (±SD) | 1C value (Mbp) | Minimum and maximum 2C DNA content (pg)/folds | Percentage of knob heterochromatin | Vegetative cycle (days)* | Seed mass (g) |
|---|---|---|---|---|---|---|
| Tupí Amarillo/VAV6563 | 6.29 ± 0.59A | 3076 | 4.63–7.56 pg/1.63-fold | 10.33–16.10 % | 82 | 2.59* |
| Tupí Blanco/VAV6851 | 6.07 ± 0.21AB | 2968 | 5.79–6.35 pg/1.10-fold | – | 2.38 | |
| Pororó Grande/VAV6826 | 6.04 ± 0.12AB | 2953 | 5.89–6.27 pg/1.06-fold | – | 1.48 | |
| Tupí Blanco/VAV6592 | 6.03 ± 0.50AB | 2949 | 4.88–6.45 pg/1.32-fold | 12.15–14.77 % | – | 2.51 |
| Pororó Grande/VAV6827 | 5.98 ± 0.09AB | 2924 | 5.85–6.11 pg/1.04-fold | – | 1.43 | |
| Azul/VAV6564 | 5.84 ± 0.43BC | 2856 | 5.08–6.98 pg/1.37-fold | 5.57–7.02 % | 75 | 2.31* |
| Pororó Grande/VAV6562 | 5.79 ± 0.09BCD | 2831 | 5.68–6.01 pg/1.06-fold | 83 | 1.41* | |
| Overo/VAV6559 | 5.79 ± 0.65BCD | 2831 | 4.52–7.37 pg/1.63-fold | 5.98–8.41 % | 76 | 2.67* |
| Pipoca Colorado/VAV6567 | 5.74 ± 0.32BCD | 2807 | 5.02–6.38 pg/1.27-fold | 7.97–13.46 % | 89 | 1.60* |
| Pipoca Colorado/VAV6607 | 5.69 ± 0.24BCD | 2782 | 5.21–6.08 pg/1.17-fold | 9.72–11.42 % | – | 1.04 |
| Colorado/VAV6573 | 5.68 ± 0.18BCDE | 2777 | 5.23–5.97 pg/1.14-fold | 7.27–9.76 % | 64 | 1.85* |
| Blanco Ancho/VAV6560 | 5.64 ± 0.22BCDE | 2758 | 5.01–6.10 pg/1.21-fold | 77 | 2.38* | |
| Rosado/VAV6565 | 5.58 ± 0.50BCDEF | 2729 | 4.58–6.19 pg/1.35-fold | 7.10–8.24 % | 76 | 1.96* |
| Blanco Angosto/VAV6574 | 5.47 ± 0.13CDEF | 2675 | 5.29–5.75 pg/1.08-fold | 75 | 2.19* | |
| Colorado/VAV6837 | 5.41 ± 0.32DEF | 2645 | 4.93–5.86 pg/1.19-fold | 6.76–9.07 % | – | 2.52 |
| Amarillo Ancho/VAV6569 | 5.37 ± 0.21EF | 2626 | 5.01–5.80 pg/1.16-fold | 6.00–9.19 % | 80 | 2.38* |
| Pororó Chico/VAV6575 | 5.36 ± 0.24EF | 2621 | 4.67–5.72 pg/1.22-fold | 10.88–14.44 % | 85 | 1.08 |
| Amarillo Angosto/VAV6556 | 5.25 ± 0.16F | 2567 | 4.91–5.62 pg/1.14-fold | 66 | 2.17 | |
| Pipoca Amarillo/VAV6568 | 4.83 ± 0.72G | 2362 | 3.96–5.92 pg/1.50-fold | 85 | 1.18 | |
| Variegado/VAV6557 | 4.62 ± 0.66G | 2259 | 3.81–5.81 pg/1.52-fold | 5.30–8.63 % | 74 | 2.37 |