Cultivar IAC Obatã 4739 was derived from a cross between coffee tree IAC 1669-20-1 and cultivar Catuaí Amarelo IAC 62. It is short and high-yielding, rust-resistant, has large and yellow fruits, medium to late maturation, excellent cup quality, and responds effectively to irrigation.
Key words:
Coffea arabica; cup quality; Hemileia vastatrix.
| Location | Harvest | Cultivar | |
|---|---|---|---|
| IAC Obatã 4739 | Control | ||
| Irrigated | |||
| Gália, SP | 5 | 83.2 | 59.41 |
| Rainfed | |||
| Garça, SP | 3 | 28.7 | 32.01 |
| Mococa, SP | 8 | 33.8 | 32.32 |
| Mococa, SP | 2 | 49.7 | 35.21 |
| Garça, SP | 6 | 37.5 | 36.41 |
| Campinas, SP | 3 | 60.0 | 38.81 |
| Ribeirão Corrente, SP Franca, SP Patrocínio, MG | 4 7 4 | 45.0 50.1 55.8 | 40.01 36.53 32.14 |
| Trait | Harvest | IAC Obatã 4739 | Obatã IAC 1669-20 | Catuaí Amarelo IAC 17 |
|---|---|---|---|---|
| Overall quality (scores) | 2015 | 82.5 | 81.5 | 82.5 |
| 2016 | 83.0 | 83.0 | 85.0 | |
| Acidity | 2015 | Medium | High | High |
| 2016 | Medium | Medium | Medium | |
| Body | 2015 | High | Medium | Medium |
| 2016 | Medium | Medium | High | |
| Flavor-taste properties | 2015 | Nuts, stone fruit, chocolate, caramel | Chestnut, stone fruit, caramel, chocolate | Nuts, stone fruit, chocolate, caramel |
| 2016 | Nuts, dry fruit, chocolate, caramel | Nuts, citrus fruit, chocolate, caramel | Floral, chestnut, stone fruit, chocolate, caramel, sweet, silky, creamy |
| Trait | Description1 |
|---|---|
| Size (tree height) | Small (Catuaí) |
| Canopy radius | Small (Catuaí) |
| Canopy architecture | Cylindrical (Catuaí) |
| Internode length | Short (Catuaí) |
| Intensity plagiotropic branching | Between medium (Mundo Novo) and high ( Catuaí) |
| Young leaf color | Green (Catuaí) |
| Leaf length | Long (Obatã IAC 1669-20) |
| Leaf width | Large (Obatã IAC 1669-20) |
| Leaf shape | Oval |
| Undulation of the leaf margin | Medium wavy (Mundo Novo) |
| Color of ripe fruits | Yellow |
| Fruit shape | Oblong (Mundo Novo) |
| Fruit size | Between medium (Mundo Novo) and large (Acaiá) |
| Grain length | Between medium (Mundo Novo) and long (Acaiá) |
| Grain width | Between medium (Mundo Novo’) and large (Catuaí) |
| Maturation | Medium to late |
| Resistance to rust2 | Resistant |
| Resistance to nematodes | Susceptible |
| Reaction to brown eye spot3 | Susceptible |
| Cup quality | Similar to Catuaí Amarelo and Obatã IAC 1669-20 |
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