KU Gold’ is a papaya cultivar with attractive yellow fruit and pale-yellow pulp during its immature stage. It can produce year-round sweet fruit containing a high amount of ascorbic acid during its ripe stage. It also has great potential as an ornamental plant due to its pale-yellow petioles and flowers.
Keywords:
Papaya breeding; golden papaya; ornamental papaya
| Characteristics | Means ± SD | |
|---|---|---|
| ‘KU Gold No. 1’ | ‘Pluk Mai Lai’ | |
| Petiole color | Pale yellow, 2C | Pale green, 146D |
| Flower color | Pale yellow, 4D | Pale yellow-green, 150D |
| Fruit skin color at immature stage | Yellow, 7C | Green, 137A |
| Fruit skin color at ripe stage | Orange-red, 34C | Yellow-orange, 23A |
| Pulp color at immature stage | Pale yellow, 4D | Green-white, 157B |
| Pulp color at ripe stage | Orange-red, 32A | Orange-red, N30C |
| Fruit weight (kg) | 1.2 ± 0.1 a | 1.0 ± 0.1 b |
| Fruit length (cm) | 29.5 ± 0.9 a | 19.5 ± 0.6 b |
| Fruit width (cm) | 9.3 ± 0.6 | 9.2 ± 0.5 |
| Pulp thickness (cm) | 2.5 ± 0.2 | 2.7 ± 0.1 |
| Pulp firmness (N) | 8.9 ± 1.0 | 9.9 ± 1.5 |
| Total soluble solids (%Brix) | 12.0 ± 0.6 | 12.6 ± 0.6 |
| Ascorbic acid (mg 100 g-1 fresh weight) | 95.4 ± 14.1 | 112.9 ± 10.9 |
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