New mango hybrid NMBP-4069

Page last updated: Monday, 25 October 2021 - 3:54pm

Please note: This content may be out of date and is currently under review.

Three new mango varieties have been developed by the National Mango Breeding Program (NMBP). NMBP-4069 is a hybrid cross from parents Van Dyke and Kensington Pride (KP).

The hybrid has potential for very high yields. The fruit has an average weight of 378 grams. The skin has a soft pink to red blush over a yellow background and is consistent through the whole canopy. It has a sweet, rich KP-style flavour with a slight tang. It is a mid-season variety maturing between KP and R2E2.

NMBP-4069 is licensed and protected under Australian Plant Breeder’s Rights legislation.


Parentage Van Dyke  x  Kensington Pride
Fruit weight 325-500g, average of 378g
Fruit shape Ovate/round with a slight beak and slightly sunken stem attachment
Fruit colour Yellow background with a soft pink/red blush over 50% of the skin when grown in the sun. Fruits inside the canopy do not blush
Skin thickness Medium (0.86mm)
Fruit flavour Sweet rich KP style with a slight Florida tang
Fruit firmness When ripe the fruit is firm, similar to R2E2
Pulp Colour is yellow/orange with a soft texture and very low fibre. The depth on a cut cheek is 30mm
Lenticels Medium size and density, yellow in colour
Seed embryo Monoembryonic
Tree canopy Medium vigour tree which is compact and dense
Cropping 7 year-old trees on KP rootstock in their fourth year of cropping yielded 61-171kg per tree
Harvest season Early to mid-season, between KP and R2E2
Plant Breeder's Rights status Granted by IP Australia on 26 June 2009


Medium to heavy yielding variety with a tendency for biennial bearing. Tree yield has varied greatly with extremely high yields recorded on some individual trees in some years.

NMBP-4069 yields from a replicated trial block on Frank Wise Institute (FWI) in Kununurra, Western Australia expressed on a per tree and per hectare basis at different planting densities
Yield NMBP-4069      

Kensington Pride



FWI tree


Farm tree


185 trees/ha

(9 x 6m)


312 trees/ha

(8 x 4m)


185 trees/ha

(9 x 6m)


2 year-old - 9.1 - - -
3 year-old 25.1 4.9 4.7 7.8 4.6
4 year-old 15.0 7.8 2.8 4.7 5.5
5 year-old 8.9 3.7 1.7 2.8 7.7
6 year-old 8.8 - 1.6 2.7 5.9
7 year-old 9.6 - 1.8 3.0 1.2
8 year-old 85.0 - 15.7 26.5 16.8

Fruit weight

The average fruit weight of NMBP-4069 is 378g. About 25% of fruit will pack out between 18 and 20 fruit per 7kg tray, 19.5%  will be 16 to 18 fruit per tray.

More information is available on request.


Fruit maturity indicators

Fruit maturity indicators at harvest for acceptable flavour were evaluated with fruit grown in Kununurra. This information will be used to produce a harvest guide, which is yet to be released.

Minimum fruit maturity indicators to develop acceptable eating quality in fruit grown in Kununurra and compared with Kensington and Calypso standards.


Dry matter


Flesh colour

(hue angle)

NMBP-4069 12.5 103
Calypso 14.0 98
Kensington Pride 14.0 -

Harvest timing

Maturity is early to mid-season. In Kununurra the harvest has varied between one week earlier and two weeks later than Kensington Pride. In Mareeba the harvest season has generally been about one week earlier than KP.

More information is available on request.

Post-harvest management

Preliminary evaluation has begun with small quantities of NMBP-4069 fruit to assess post-harvest performance after treatment with hot water, vapour heat and irradiation.

Hot water and VHT disinfestation

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. NMBP-4069 responded well to treatments with only slight fruit softening and very slight increase in lenticel spotting. No increases in skin browning, fruit rots or a delayed skin de-greening were observed.  High temperature preconditioning (8 hours at 30°C) negated further skin quality loss. Overall fruit quality was commercially acceptable.

Irradiation disinfestation

NMBP-4069: A 2017/18 trial demonstrated this variety handled irradiation well. A second trial is planned for 2018/19 to confirm results. 

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-4069 was granted a certificate of Plant Breeder’s Rights in June 2009 giving the breeders and their agents the exclusive rights to manage the propagation, growing and sale of the variety.


This information is also available in Vietnamese (see attachment).


For queries about the National Mango Breeding Program, please contact:

For commercial queries-

For technical information-


Tara Slaven