Table 1.
Phenotypic variations between Gossypium hirsutum races and cultivar populations.
| Trait | Sum of squares | Mean squares | P value | G barbadense | Yucatanense | G hirsutum | Morrilli | Latifolium | Richmondi | Punctatum | Marie-Galante | Palmeri |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Germination potential (%) | 49.427 | 5.492 | <.0001 | 0.892A | 0.875AB | 0.8AB | 0.64AB | 0.64AB | 0.63AB | 0.56AB | 0.49AB | 0.29BC |
| Germination rate (%) | 60.050 | 6.672 | <.0001 | 0.90A | 0.93A | 0.89A | 0.71B | 0.72B | 0.68B | 0.63B | 0.62B | 0.35C |
| Seedling weight (g) | 22.421 | 2.490 | <.0001 | 0.63A | 0.42AB | 0.54AB | 0.38BC | 0.44AB | 0.42AB | 0.36BC | 0.41B | 0.21C |
| Embryonic axis length (cm) | 3858.821 | 428.758 | <.0001 | 7.80A | 6.38A | 7.86A | 4.52A | 5.52A | 5.05A | 5.52A | 5.02A | 3.45AB |
| Root length | 3067.371 | 340.819 | <.0001 | 7.38A | 5.10A | 6.68B | 4.08BC | 4.67BC | 4.75BC | 5.09B | 4.29BC | 3.73C |
| Fruiting branches (no.) | 19 193.402 | 2132.600 | <.0001 | 10.64A | 14.50A | 10.17A | 13.72A | 11.29A | 13.95A | 13.47A | 12.89A | 15.00A |
| Bolls per plant (no.) | 30 891.448 | 3432.383 | <.0001 | 16.61BC | 25.50A | 9.81D | 17.19B | 9.88D | 24.15A | 17.92B | 13.39CD | 27.36A |
| Single boll weight (g) | 2060.994 | 228.999 | <.0001 | 3.31B | 2.67BC | 5.37A | 3.08BC | 5.58A | 3.39B | 3.03BC | 3.85B | 1.76C |
| Lint (%) | 94 654.862 | 10 517.207 | <.0001 | 33.56B | 20.54BC | 43.07A | 23.43C | 30.89B | 23.41C | 22.88C | 26.88BC | 22.62C |
| Seed index (100 seeds-g) | 11 827.508 | 1314.168 | <.0001 | 12.25A | 8.02AB | 10.24AB | 10.09AB | 11.33A | 10.46AB | 8.30AB | 10.79A | 7.68B |
| Fiber length | 75 159.012 | 8351.001 | <.0001 | 31.03A | 22.95A | 27.80A | 24.54A | 24.21A | 24.69A | 23.55A | 25.88A | 22.07A |
| Uniformity index | 769 007.099 | 85 445.233 | <.0001 | 84.20A | 79.55A | 84.28A | 80.85A | 81.52A | 80.94A | 80.79A | 81.86A | 78.81A |
| Strength | 75 782.633 | 8420.293 | <.0001 | 34.40A | 23.25B | 24.22B | 24.01B | 22.89B | 24.14B | 23.50B | 24.94B | 25.80B |
| Micronaire value | 2056.559 | 228.507 | .58 | 4.34A | 4.00A | 4.17A | 4.03A | 4.55A | 4.40A | 4.21A | 3.95A | 3.03A |
| Elongation (%) | 4964.156 | 551.573 | .34 | 7.03A | 6.45A | 6.64A | 6.42A | 6.49A | 6.44A | 6.46A | 6.48A | 6.63A |