‘NABIO808’ is a newly released, conventionally-bred triploid cooking banana cultivar in Uganda. It produces an average bunch yield of 54.5 t ha-1 yr-1 and is resistant to weevils, nematodes, and black Sigatoka. Additionally, its food is yellow, soft, and tasty, like that of most preferred landrace cultivars, making it more acceptable to end-users.
Keywords:
Matooke breeding; host plant resistance; weevils; nematodes; black Sigatoka
| Genotypes | Traits | |||||||
|---|---|---|---|---|---|---|---|---|
| BYL (t ha-1 yr-1) | TNH | FC (cm) | FL (cm) | PH (cm) | PG (cm) | NFL | INSL (%) | |
| NABIO808 (NAROBAN5) | 54.5 | 9.1 | 13.1 | 16.6 | 332.8 | 53.6 | 13.2 | 76.4 |
| NABIO306 | 53.3 | 9.0 | 13.0 | 16.8 | 316.9 | 50.8 | 12.4 | 72.1 |
| Kibuzi (local cultivar) | 45.6 | 8.7 | 13.0 | 16.4 | 384.3 | 46.7 | 9.5 | 66.2 |
| Mbwazirume (local cultivar) | 34.0 | 8.3 | 12.3 | 15.2 | 333.5 | 51.7 | 8.2 | 56.3 |
| Mean | 46.8 | 8.8 | 12.8 | 16.8 | 384.3 | 50.7 | 10.8 | 67.8 |
| LSD0.05 | 4.30 | 0.16 | 0.58 | 1.1 | 34.7 | 1.4 | 0.82 | 6.7 |
| F-Probability | <0.001 | <0.001 | 0.018 | 0.013 | <0.001 | <0.001 | <0.001 | <0.001 |
| Genotypes | Root necrosis by nematodes (%) | Total cross-sectional damage to corm by weevils (%) |
|---|---|---|
| NABIO808 (‘NAROBAN5’) | 3.2 | 1.5 |
| NABIO306 | 3.5 | 1.7 |
| Yangambi-KM5 (resistant check) | 3.9 | 1.4 |
| Kibuzi (susceptible check) | 47.3 | 28.3 |
| Mbwazirume (susceptible check) | 62.3 | 49.4 |
| MEAN | 24.0 | 16.5 |
| LSD0.05 | 0.9 | 1.1 |
| F-Probability | <0.001 | <0.001 |
| Cooked food sensory traits (Hedonic scale: 1-6) | |||||
|---|---|---|---|---|---|
| Genotype | Taste | Aroma | Mouth feel | Colour | Overall Acceptability |
| NABIO808 (NAROBAN5) | 5.60 | 5.35 | 5.65 | 5.90 | 5.70 |
| NABIO306 | 5.55 | 5.25 | 5.45 | 5.85 | 5.55 |
| Mbwazirume (local check cultivar) | 5.75 | 5.60 | 5.75 | 5.95 | 5.80 |
| Kibuzi (local check cultivar) | 5.20 | 4.70 | 5.15 | 4.95 | 5.10 |
| Mean | 5.53 | 5.23 | 5.50 | 5.66 | 5.54 |
| LSD0.05 | 0.18 | 0.29 | 0.24 | 0.22 | 0.13 |
| F-Probability | 0.009 | 0.008 | 0.003 | 0.002 | 0.001 |
| Plant part | Characteristics | Time of data collection | Behaviour | Score |
|---|---|---|---|---|
| Leaf | Leaf habit | At shooting | Intermediate | 2 |
| Pseudo stem height (m) | At shooting | ≥3 | 3 | |
| Blotches at the leaf petiole base | At fruiting | Sparse blotches | 1 | |
| Leaf petiole margin colour | At shooting | Green | 1 | |
| Leaf blade length | At shooting | 171-220 cm | 2 | |
| Leaf blade width | At shooting | 71-80 cm | 2 | |
| Pseudostem | Pseudostem colour (with sheath) | At flowering | Medium green | 2 |
| Predominant underlying colour of the pseudostem | At flowering | Pink-purple | 5 | |
| Bunch | Bunch position | At maturity | Slightly angled | 2 |
| Bunch shape | At maturity | Cylindrical | 1 | |
| Peduncle pubescence | At maturity | Short hairs | 3 | |
| Bunch appearance | At maturity | Compact | 2 | |
| Bunch maturity time | Mature green | 170 days | NA | |
| Rachis | Rachis orientation of male phase | At maturity | Falling vertically | 1 |
| Rachis appearance | At maturity | Bare | 1 | |
| Male bud | Bract apex shape | At maturity | Obtuse | 4 |
| Bract imbrication | At maturity | Imbricate | 2 | |
| Fruit | Fruit shape | At harvest | Straight (or slightly curved) | 1 |
| Fruit shape | At maturity | Straight in the distal part | 2 | |
| Transverse section of fruit | At harvest | Slightly ridged | 3 | |
| Fruit apex | At harvest | Blunt tipped | 3 | |
| Persistence of floral organs | At harvest | Absent | 1 | |
| Immature fruit peel colour | At fruiting | Light green | 1 | |
| Mature fruit peel colour | At harvest | Green-yellow | 2 | |
| Pulp colour | At maturity | Yellow | 3 |
