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The marionberry (Rubus L. subgenus Rubus) is a cultivar of blackberry released in 1956 by the USDA Agricultural Research Service breeding program in cooperation with Oregon State University. [ 1 ] [ 2 ] [ 3 ] It is named after Marion County, Oregon , where the berry was bred and tested extensively in the mid-20th century.
Vegetative propagation is usually considered a cloning method. [8] However, root cuttings of thornless blackberries (Rubus fruticosus) will revert to thorny type because the adventitious shoot develops from a cell that is genetically thorny. Thornless blackberry is a chimera, with the epidermal layers genetically thornless but the tissue ...
Rubus ulmifolius is a species of wild blackberry known by the English common name elmleaf blackberry or thornless blackberry and the Spanish common name zarzamora.It is native to Europe and North Africa, and has also become naturalized in parts of the United States (especially California), Australia, and southern South America.
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The blackberries, as well as various other Rubus species with mounding or rambling growth habits, are often called brambles. However, this name is not used for those like the raspberry that grow as upright canes, or for trailing or prostrate species, such as most dewberries, or various low-growing boreal, arctic, or alpine species.
[4] [5] It has also been sparingly recorded in Great Britain, in which it is often confused for the many other native blackberry species. [6] This rhizomatous shrub forms thickets up to 2 to 3 meters (7–10 feet) tall. The leaves are deciduous and alternately arranged, each measuring 10 to 20 centimeters (4-8 inches) long.
Christmas cactus and its relatives are easy to propagate from stem cuttings. The flattened leaf-like “foliage” of the Christmas cacti are actually modified stems, not leaves. Like other cacti ...
The fruits are compound drupes which change from bright red to black at maturity. Each section (drupelet) of a blackberry contains a single seed. Second year plants die after bearing fruits, but regrow from the underground portion of the plant. There are many species of blackberries, which are edible and differ by size. [6]