Jonagold
Encyclopedia
Jonagold is a cultivar
of apple
, a cross between Golden Delicious
and Jonathan
which was developed in 1953 in New York. They form a large sweet fruit with a thin skin. Because of their large size they are now favoured by commercial growers in many parts of the world. Jonagold is triploid
, with sterile pollen, and as such, requires a second type of apple for pollen and is incapable of pollenizing
other cultivars. The Jonagored Apple, a sport
mutation of Jonagold, was once covered under United States Patent PP05937, now expired.
Jonagold has a green-yellow basic color with crimson, brindled covering colour.
The apple has a fluffily crisp fruit. It is juicy and aromatic and has a sweet-sour taste.
Cultivar
A cultivar'Cultivar has two meanings as explained under Formal definition. When used in reference to a taxon, the word does not apply to an individual plant but to all those plants sharing the unique characteristics that define the cultivar. is a plant or group of plants selected for desirable...
of apple
Apple
The apple is the pomaceous fruit of the apple tree, species Malus domestica in the rose family . It is one of the most widely cultivated tree fruits, and the most widely known of the many members of genus Malus that are used by humans. Apple grow on small, deciduous trees that blossom in the spring...
, a cross between Golden Delicious
Golden Delicious
The Golden Delicious is a cultivar of apple with a yellow color. It is not closely related to the Red Delicious apple.- Appearance and flavor :...
and Jonathan
Jonathan (apple)
The Jonathan apple is a medium-sized sweet apple, with a strong touch of acid and a tough but smooth skin. It is closely related to the Esopus Spitzenburg apple.-History:There are two alternative theories about the origin of the Jonathan apple....
which was developed in 1953 in New York. They form a large sweet fruit with a thin skin. Because of their large size they are now favoured by commercial growers in many parts of the world. Jonagold is triploid
Polyploidy
Polyploid is a term used to describe cells and organisms containing more than two paired sets of chromosomes. Most eukaryotic species are diploid, meaning they have two sets of chromosomes — one set inherited from each parent. However polyploidy is found in some organisms and is especially common...
, with sterile pollen, and as such, requires a second type of apple for pollen and is incapable of pollenizing
Pollenizer
A pollenizer or polleniser, sometimes pollinizer or polliniser is a plant that provides pollen.In American English, the words pollenizer and pollinator are often confused: A pollinator is the biotic agent that moves the pollen, such as bees, moths, bats, and birds...
other cultivars. The Jonagored Apple, a sport
Bud sport
A bud sport is a part of a plant or tree, for example, a leaf, shoot or flower, which due to a genetic mutation clearly differs from the rest of the plant, and which can also be grafted to grow new plants which retain this genetic difference as a new cultivar....
mutation of Jonagold, was once covered under United States Patent PP05937, now expired.
Jonagold has a green-yellow basic color with crimson, brindled covering colour.
The apple has a fluffily crisp fruit. It is juicy and aromatic and has a sweet-sour taste.
Disease susceptibility
- Scab: high
- Powdery mildew: low
- Cedar apple rust: high
- Fire blight: high