“朋娜”等脐橙的裂果规律及赤霉素防裂效果  

THE FRUIT CRACKING RULES OF NAVEL ORANGE VARIETIES SUCH AS "PENGNA" AND THE EFFECT OF GIBBERELLIN (GA) PREVENTING FRUITS FROM CRACKING

作　　者：叶正文[1] 叶兰香[1] 张学英[1] 

机构地区：[1]上海市农业科学院林木果树研究所,上海201106

出　　处：《上海农业学报》2002年第4期52-57,共6页Acta Agriculturae Shanghai

基　　金：上海市科技发展基金项目 (编号 :9731130 0 9)。

摘　　要：对 4个日美系脐橙的正常果与裂果的果形指数、果皮厚度及其纵向变化率调查后认为 ,裂果的发生率与果形指数、果皮厚度的关系并不明显 ,而与果皮厚度的纵向变化率关系更大。“朋娜”脐橙的裂果高峰期在 9月下旬至 10月下旬 ,峰值出现在果实膨大接近最大值的 10月上中旬 ;结合“朋娜”果实的生长动态与裂果发生进程 ,在谢花后的 5～ 7月份以 5 0mg L的赤霉素水溶液喷布 1次、2次与 3次能明显降低裂果发生率 ,其中以喷布 3次者效果更加突出。赤霉素处理后果实品质未受影响。The fruit shape index, fruit skin thickness and ratio of thickness difference to longitudinal diameter were investigated in normal fruits and cracked fruits of four varieties of navel orange. The results showed that the fruit cracking rates were related with the ratios but not obviously with the fruit shape indexes and the skin thickness. The fruit cracking peak time of Pengna variety was between the last ten days of September and the last ten days of October, and the peak rate Occurred in the first twenty days of October when fruits expanded nearly the most rapid. According to the trend of fruit growth of Pengna variety and the course of fruit cracking occurring, spraying 50mg/L GA 3 aqueous solution for one, two or three times during May～July after blossom falling could obviously reduce the fruit cracking rate,and the effect of spraying for three times was the best. The fruit quality was not influnced by GA treatment.

关 键 词：防裂效果 脐橙 裂果规律 果实生长动态 赤霉素 

分 类 号：S666.4[农业科学—果树学]