Raspberry is the fruit of several plants under the genus Rubus. There are several species of raspberry plants and a multitude of hybrids.
Red raspberry cultivars are the most popular commercial cultivars, derived from the hybrids between between Rubus idaeus and Rubus strigosus. Red raspberry is a widely cultivated variety in Europe and western parts of Asia.
Red raspberry has been crossed with several species, subspecies and subgenera in the genus Rubus and several hybrids have been evolved. Though several of them are grown in horticultural laboratories and home gardens, some have attained commercial importance.
Purple raspberry is the result of hybridization between red and black varieties. These hybrids also occur naturally, specially where both the American red and the black varieties grow naturally. The commercial cultivation of these hybrids is very rare.
The loganberry (Rubus loganobaccus L.H.Bailey) is a hybrid of blackberry (Rubus ursinus) and raspberry (Rubus idaeus). The fruit appears more similar to blackberry but with deep red color.
The loganberry was derived from a “cross between Rubus ursinus (R. vitifolius) ‘Aughinbaugh’ (octoploid) as the female parent and Rubus idaeus ‘Red Antwerp’ (diploid) as the male parent (pollen source)”.
The blue raspberry known as Columbian cultivar is a hybrid of species R. strigosus and R. occidentalis. It has large-size, fleshy, firm fruits with phenomenal productiveness. It is a commercially important fruit in canning industry.
The boysenberry is a multigeneration hybrid among the European raspberry (Rubus idaeus), European blackberry (Rubus fruticosus), American dewberry (Rubus aboriginum), and loganberry (Rubus × loganobaccus).
The tayberry is a cross between a blackberry and a red raspberry (Rubus fruticosus x R. idaeus). It is named after the river Tay in Scotland.
Though the fruit is large, sweet and aromatic, it does not pick easily by hand and cannot be machine harvested and remained a garden fruit.
1.Image source: https://en.wikipedia.org/wiki/File:Himbeere_(Rubus_idaeus)_IMG_7756.JPG
Image author: Hedwig Storch
Image license: https://creativecommons.org/licenses/by-sa/3.0/deed.en
2.Image source: https://commons.wikimedia.org/wiki/File:Loganberries_on_the_plant.jpg
Image author: Nadiatalent
Image license: https://creativecommons.org/licenses/by-sa/4.0/deed.en
3.Image source: https://en.wikipedia.org/wiki/File:Boysenberries.jpg
Image author: Fir0002/Flagstaffotos
Image license: https://creativecommons.org/licenses/by-nc/3.0/
4.Image source: https://en.wikipedia.org/wiki/File:Tayberry.jpg
Image author: Jean-Luc Toilet
Image license: https://creativecommons.org/licenses/by-sa/2.0/deed.en as on 01-02-2020
Current topic in Nutrition, Health & Wellness: Raspberry fruit hybrids.