Growth and flower-bud formation in apple as affected by paclobutrazol, daminozide, and tree orientation in combination with various gibberellins

摘要: SummaryThe effect of paclobutrazol (1000 ppm), daminozide (1800 and the gibberellins GA3, GA4, GA7 GA4+7 (500 applied alone or in various combinations on shoot growth flower-bud formation was determined for one-year-old (two experiments) two-year-old (one experiment) cv Cox’s Orange Pippin trees pots. One experiment included tree position (vertical v. horizontal). Daminozide, (when twice) horizontal reduced growth, but GAs had little no effect. In year after treatments, paclobutrazol-treated stimulated considerably. other treatment groups there pronounced after-effect growth. GA3 GA4 influence flowering, whereas greatly it. Paclobutrazol flowering where general level low by some (e.g. with GA7). Flowering promoted horizontally-positioned to d...