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Fragaria vescana : ウィキペディア英語版
Fragaria × vescana


''Fragaria'' × ''vescana'' is a hybrid strawberry cultivar that was created in an effort to combine the best traits of the garden strawberry (''Fragaria'' × ''ananassa''), which has large berries and vigorous plants, with the woodland strawberry (''Fragaria vesca''), which has an exquisite flavour, but small berries.
This cross cannot take place naturally. ''Fragaria'' × ''ananassa'' has eight sets of chromosomes whereas ''Fragaria vesca'' has only two sets. Repeated attempts to cross these resulted in sterile offspring.
Researchers treated tissue from a ''Fragaria vesca'' plant with colchicine to create a mutant plant with four sets of chromosomes. This mutant was then crossed with a ''Fragaria'' × ''ananassa'' plant, and vigorous fertile offspring were obtained. The offspring were found to be decaploid, (having ten sets of chromosomes).
''Fragaria'' × ''vescana'' is not yet commercially important, but remains under development. While the plants are vigorous like their ''F.'' × ''ananassa'' parents, and the berries have the excellent flavour of the ''F. vesca'' parents, the berries are still quite small.
==''F.'' × ''vescana'' cultivars==
The following decaploid strawberries were released by the Swedish breeding program at Balsgård:
* 'Annelie' (1977)
* 'Sara' (1988) — 'Annelie' × (× ''F. vesca'' 4×) open pollinated )
* 'Rebecka' (1998) — ('Fern' × ''F. vesca'' 4×) × ''F.'' × ''ananassa'' F861502
German ''F.'' × ''vescana'' cultivars:
* 'Spadeka' (1977)
* 'Florika' (1989) — ('Sparkle' × ''F. vesca'' 'Semperflorens' 4x) × 'Klettererdbeere Hummi'

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Fragaria × vescana」の詳細全文を読む



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