Description
Parentage | Irwin♀ x Kensington Pride♂ |
---|---|
Fruit colour | Strong red/pink blush on a pale yellow background when ripe |
Average fruit weight | 319-799g, average of 507g |
Fruit shape | Ovate and deeper than wide, with a small sharp beak that flattens out at full maturity. The stem end is flat or slightly depressed |
Background skin colour | Pale yellow background with an intense pink/red blush that covers up to 80% of the skin when fully exposed to the sun. Only a weak blush when fruit is fully shaded |
Skin thickness | 0.81mm (medium) |
Fruit flavour | Classical KP flavour |
Fruit firmness | Similar to KP when ripe |
Pulp | Light orange with a soft texture and very slight fibre. Depth of a cut cheek is 30mm |
Lenticels | Medium in size and density, with a light yellow colour |
Seed embryo | Monoembryonic |
Tree canopy | Medium vigour with open canopy |
Cropping | Mature grafted trees produce 20-90 kilograms per tree |
Harvest season | Early season in Darwin, Kununurra and Mareeba (2-4 weeks before KP) |
Plant Breeder's Rights status | Granted by IP Australia on 26 June 2009 |
Productivity
Medium to heavy yield, consistent year to year.
Yield | — | NMBP-1243 | — | — | KP |
---|---|---|---|---|---|
Kununurra
| FWI tree (kg) | Farm tree (kg) | 185 trees/ha (9 x 6m) (tonnes) | 312 trees/ha (8 x 4m) (tonnes) | 185 trees/ha (9 x 6m) (tonnes) |
2 year-old | 10.21 | 15.10 | 1.90 | 3.20 | 4.60 |
3 year-old | 36.95 | 2.80 | 6.80 | 11.50 | 5.50 |
4 year-old | 31.17 | 4.30 | 5.80 | 8.70 | 7.70 |
5 year-old | 18.02 | 19.90 | 3.39 | 5.60 | 5.90 |
6 year-old | 22.74 | - | 4.21 | 7.10 | 1.20 |
7 year-old | 54.40 | - | 10.10 | 17.00 | 16.80 |
Fruit weight
The average fruit weight is 507g with 47% in the 460–540g range. About 30% will pack out 14 to 16 fruit per 7 kilogram tray and 15% as 16 to 20 fruit per tray.
More information is available on request.
Harvest
Fruit maturity indicators
Fruit maturity indicators for acceptable flavour were evaluated with fruit grown at Kununurra. This information will be used to produce a harvest guide, which is yet to be released.
Dry matter (%) | Flesh colour (hue angle) | Total dissolved solids (°Brix) | Titratable acidity (TA) | |
---|---|---|---|---|
NMBP-1243 | 12.6 | 101 | 7.8 | 1.9 |
Calypso | 14.0 | 98 | 7.0 | - |
Kensington Pride | 14.0 | - | - | - |
Harvest timing
NMBP-1243 maturity is early season. Typically fruit will ripen on the tree two to four weeks earlier than Kensington Pride at the same location.
More information is available on request.
Postharvest management
Preliminary evaluation with small quantities of NMBP-1243 fruit to assess their postharvest performance after treatment with hot water, vapour heat and irradiation treatments has been conducted.
Hot water and VHT disinfestation
NMBP-1243 responded well to hot water and vapour heat treatment with little damage to the fruit, resulting in high quality fruit acceptable for sale.
Fruit grown at Mareeba and Kununurra was treated with hot water dip (HWD) at 46.1°C for 85 minutes and with vapour heat (VHT) at 47°C for 15 minutes. The treatments did not cause the fruit to soften, develop skin browning, increase the incidence of fruit rots or delay skin de-greening.
Lenticel spotting was low in treated fruit.
Irradiation disinfestation
NMBP-1243 responded well to irradiation with no discernible difference apart from slowing of the fruit colouring and ripening process by 1-3 days. The variety appears free of lenticel spotting with an excellent open appearance. Fruit maintained equal firmness across both samples. Shelf life was exceptional in both treated and untreated fruit.
Observations were made from non commercial samples shipped to Steritech via road and air without ethylene ripening over two seasons, from Darwin and Kununurra. Samples were re-packed into a shaded pattern to observe variations in both colour / ripening stages within treated samples as well as variations between control and treated samples.
Treated samples were processed on commercial 400Gy New Zealand runs where possible, with the majority of samples achieving an absorbed dose between 500 and 800Gy. Fruit was held at 14 degrees Celsius after treatment.
It is expected that commercial production volumes will allow a developed understanding and control of unique variables for each variety important to optimising the treatment process. Ripeness and colour stage of mangoes at time of treatment are well known and important factors for optimising quality. The treatment slows ripening and de-greening (pers. comm. Benjamin Reilly, Steritech Brisbane 2018).
Plant Breeder’s Rights
NMBP-1243 was granted a certificate of Plant Breeder’s Rights in June 2009 giving the breeders and their agents exclusive rights to manage the propagation, growing and sale of the variety.
Vietnamese
This information is also available in Vietnamese (see attachment).
Contact
For queries about the National Mango Breeding Program, please contact:
For commercial queries- hfsbm@daf.qld.gov.au
For technical information- ian.bally@daf.qld.gov.au