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6-苄胺嘌呤和赤霉素控制华盛顿脐橙生理落果的研究
STUDIES ON 6-BENZYLAMINOPURINE AND GIBBERELLIN IN CONTROLLING PHYSIOLOGICAL DROP OF WASHINGTON NAVEL ORANGE
【摘要】 脐橙产量低主要是生理落果严重造成的。华盛顿脐橙在夏季落果期间,脱落的小果分为带果梗的(第一次生理落果)和不带果梗的(第二次生理落果)。谢花后,用BA处理幼果(直径0.45~0.6厘米大时)能显著减少第一次生理落果,但GA的作用较弱;减少第二次生理落果,则GA的效应显著,但与BA无关。BA和GA混合处理或先BA后GA处理,减少两次生理落果的效应均佳。试验结果指出,先用BA400ppm处理,后用GA50ppm处理的,既促进座果,又对果实品质几乎无不良影响。
【Abstract】 The poor yield of Navel orange is primarily due to physiological drop that resulted in excessive abscission of small fruit following the flowering period. The abscission of small fruit of Washington Navel ora-nge occurred either at the base of the pedicel ( first physiological drop) or at the base of the ovary (second physiological drop) during the summer-drop period.A significant reduction of the first physiological drop resulted from BA treatment applied when flowers are dropping, with small fruit of up to 0.45~0.6 cm in diammeter. The effect of GA was less pronounced than BA, but GA was very effective against the second physiological drop, which was not associated with BA, for it failed to give the desi-red result. Either BA in combination with GA or BA followed by GAresulted in significant reduction of the two physiological drops.The results of the experiments indicate that there is almost no un-desirable effect on fruit quality by applying BA 400 ppm before the first physiological drop and applying GA 50 ppm before the second physiological drop.
- 【文献出处】 园艺学报 ,Acta Horticulturae Sinica , 编辑部邮箱 ,1982年02期
- 【被引频次】26
- 【下载频次】96