STUDIES ON FLOWER-BUD DIFFERENTIATION AND FORCING OF BLUEBERRY

蓝莓花芽分化及催熟的研究

• 批准号: 05660033
• 负责人: UEDA Hisafumi
• 金额: $ 0.32万
• 依托单位: SHIMANE UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05660033/
• 关键词: Blueberry; Forcing; Cut branch; Rate of flowering; Flower-bud differentiation; Breaking of dormancy; Duration of cold treatment; 花芽; 切り花形質; 品種間差; ブルーベリー; 花材生産; 促成開花

An early cultivar of highbush blueberry( 'Northland' ) began its flower-bud differentiation in early June and attained to the period of pistil formation in early and middle July. The times of flower-bud initiation and pistil formation in an early cultivar of rabbiteye blueberry ( 'Woodard' ) were about 2 months later, respectively, than those in the cultivar of highbush blueberry. The effects of the sampling date of branches having flower buds and those of the time and duration of a cold treatment (4ﾟC) on the rate of lowering were examined in the cultivar of highbush blueberry. when the branches were sampled in middle October and received the cold treatment for more than 30 days, the rate of flowering attained to more than 50 % in late December. The effects of the time and duration of the cold treatment on the rate of flowering were compared using potted plants among 4 cultivars of highbush blueberry ( 'Northland' , 'Rancocas' , 'Jersey' and 'Darrow' ). 'Darrow' and 'Northland' showed the higher rates of flowering in the shorter duration of the cold treatment than 'Rancocas' and 'Jersey'.

高丛蓝莓早熟品种‘Northland’于6月上旬开始花芽分化，7月上中旬进入雌蕊形成期。早熟品种兔眼蓝莓(‘Woodard’)的花芽萌发和雌蕊形成时间比高丛蓝莓分别晚2个月左右。以高灌木蓝莓品种为试材，研究了开花枝条取样日期、冷处理时间和持续时间(4ﾟC)对落花率的影响。10月中旬采枝，经过30d以上的低温处理，12月下旬开花率达50%以上。以盆栽蓝莓品种‘Northland’、‘Ranocas’、‘Jersey’和‘Darrow’为材料，比较了低温处理时间和持续时间对开花率的影响。‘Darrow’和‘Northland’在较短的冷处理时间内开花率高于‘Ranocas’和‘Jersey’。