The 'Duncan' mango is a named

mango cultivar The following is a list of some prominent mango cultivars. Worldwide, hundreds of mango cultivars are known, with over 1000 varieties in India. Most commercial cultivars belong to '' Mangifera indica'', while a few commercial varieties grown in S ...

that originated in south Florida and was later patented.

History

The original tree was grown from a seed planted in 1956 by David Sturrock of

West Palm Beach, Florida West Palm Beach is a city in and the county seat of Palm Beach County, Florida, United States. It is located immediately to the west of the adjacent Palm Beach, which is situated on a barrier island across the Lake Worth Lagoon. The populati ...

. Sturrock had written in 1969 that it had been a cross of Edward and

Pico Pico may refer to: Places The Moon * Mons Pico, a lunar mountain in the northern part of the Mare Imbrium basin Portugal * Pico, a civil parish in the municipality of Vila Verde * Pico da Pedra, a civil parish in the municipality of Ribeir ...

, but a 2005 pedigree analysis indicated that Nam Doc Mai was the likely parent. This explanation is challenging because Nam Doc Mai was not introduced into Florida until the 1970s, and that Duncan is

monoembryonic Monoembryony is the emergence of one and only one seedling from a seed. A seed giving two or more seedlings is polyembryonic Polyembryony is the phenomenon of two or more embryos developing from a single fertilized egg. Due to the embryos resulting ...

while Nam Doc Mai is

polyembryonic Polyembryony is the phenomenon of two or more embryos developing from a single fertilized egg. Due to the embryos resulting from the same egg, the embryos are identical to one another, but are genetically diverse from the parents. The genetic differ ...

. The tree first fruited in 1960 and the new variety was named after Ralph V. Duncan of Boynton Beach, Florida, who was a flood control district supervisor that had provided maps for a book written by Sturrock. 'Duncan' was later patented by Sturrock. The variety was recognized for its excellent eating quality and handling characteristics, as well as its production, and later became a nursery stock tree in Florida. Duncan trees are planted in the collections of the

USDA The United States Department of Agriculture (USDA) is the federal executive department responsible for developing and executing federal laws related to farming, forestry, rural economic development, and food. It aims to meet the needs of com ...

's germplasm repository in

Miami, Florida Miami ( ), officially the City of Miami, known as "the 305", "The Magic City", and "Gateway to the Americas", is a East Coast of the United States, coastal metropolis and the County seat, county seat of Miami-Dade County, Florida, Miami-Dade C ...

, the University of Florida's Tropical Research and Education Center in

Homestead, Florida Homestead is a city within Miami-Dade County in the U.S. state of Florida, between Biscayne National Park to the east and Everglades National Park to the west. The population was 80,737 as of the 2020 census. Homestead is primarily a Miami s ...

, and the Miami-Dade

Fruit and Spice Park The Fruit & Spice Park, formally known as the Preston B. Bird/Mary Heinlein Fruit & Spice Park, is a 37-acre park located in the heart of Redland, Florida, and is the only botanical garden of its kind in the United States. This park is operated ...

, also in Homestead.

Description

The fruit is oblong in shape and turns yellow when ripe, averaging slightly over a pound in weight. Most of the fruit on the tree are of uniform size and shape. The orange flesh is fiberless, has a sweet and mild flavor, and contains a

seed. Duncan fruit typically reach maturity in July in Florida. The trees are vigorous growers with dense canopies. Both the trees and their fruit have very good disease resistance qualities.

References

{{DEFAULTSORT:Duncan (Mango) Mango cultivars Flora of Florida