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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Buddleja × weyeriana ： ウィキペディア英語版 Buddleja × weyeriana ''Buddleja'' × ''weyeriana'' is one of the more remarkable buddleja hybrids, the first crossing of an Asiatic species (''B. davidii'') with a South American (''B. globosa''). The hybrid was raised during the First World War by the eponymous Major William van de Weyer at his home, Smedmore House, at Corfe Castle, England. Van de Weyer was hoping to achieve an inflorescence the size of ''davidii'' with the colour of ''globosa'', but met with only limited success.〔Weyer, van de, W. (1920) Buddleja weyeriana. ''Gardeners' Chronicle'' ser. 3, 68: 181. 1920.〕〔Bean, W. J. (1980). ''Trees and shrubs hardy in Great Britain''. Vol.1. 8th edition. Murray, UK.〕〔Stuart, D. (2006). ''Buddlejas''. RHS Plant Collector Guide. Timber Press, Oregon. ISBN 978-0-88192-688-0〕 ==Description== The F1 progeny of × ''weyeriana'' was a disappointment, the inflorescences small and the colours drab. Van de Weyer rightly deduced the colour was a function of a recessive trait, and reputedly crossed the F1 plants to raise the superior F2 cultivars 'Golden Glow' and 'Moonlight', although both retained vestiges of the lilac colouring of ''davidii''. However, Moore considered it more likely the cultivars arose from backcrossing the F1 hybrids with ''B. globosa''. 〔Moore, R. J. (1960). Cytotaxonomic notes on Buddleia. L. ''Am. J. Bot.'' 47, 6, p. 511-517. 1960.〕 The shrub's nectar is relatively complex, comprising three constituents in almost equal proportions: sucrose, fructose, and glucose, whereas the nectar of the common ''Buddleja davidii'' is almost exclusively sucrose.〔 Percival, M. (1961). Types of nectar in angiosperms. ''New Phytol.'' 60: 235-281. 1965. Floral biology. Pergamon Press, London.〕 It was not until half a century later that the colour objective was realized, when a Dutch nursery cloned a pure orange-yellow sport of 'Golden Glow' to produce 'Sungold'.〔 An inflorescence the size of ''davidii'' with this desired colour remains (2014) elusive. Ploidy: ''2n'' = 76. 〔Norman, E. M. (2000). Buddlejaceae. ''Flora Neotropica 81''. New York Botanical Garden, USA〕 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「Buddleja × weyeriana」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.