【摘要】 GA₃在柑桔果实发育的晚期,采收前15至30天,用10-20ppm浓度喷于树上可延迟果皮组织的衰老、叶绿素的消失、类胡萝卜素的积累和果皮的软化,但对果实内部品质的变化无影响。经过本次扩大试验的应用,再次得到肯定的效果。由于应用GA₃,果实采收后果色转变不均匀,如作为采后立即销售不大适宜,椪柑（Citrus reticulata Blanco var.Ponkan）需贮藏两个月;蕉柑（Citrus reticulata Blanco var.Tankan）需贮藏三个月才能恢复原来鲜红的色泽;甜橙（Citrus sinensis osbeck var.Canton orang）则色淡黄比不上未处理的果实。GA₃处理的椪柑,由于增强果皮的硬度,经150天贮藏,好果率较对照高80％以上,而枯水浮皮果又较对照少50％,腐烂果也显著减少;这说明GA₃可能作为控制椪柑枯水浮皮生理病害的一个有效措施。更多还原

【Abstract】 Spraying the Citrus trees with 10-20ppm of GA3 during the last stage of Fruit development, about 15 to 30 days before harvest, delays fruit maturity as well as preventing the on-set of senescence in the rind tissue of the fruit, without any significant effect on quality of the fruit. The same result holds true for all other local citrus varieties tested.Due to the delay in color change from green to orange or red, the fruits will not be ready for sale immediately after harvest. For instance, Ponkan will take two months and Tankan, three months time of storage before the normal red color could develope. However, with further prolonged period of storage, orange often develope a pale yellow color, making them inferior in quality as compare with the control. An examination of the Ponkan fruits treated with GA3 showed an increase of healthy fruits by 50%. Likewise, mandarin fruits si-milarly treated are found less likely to develop a disorder known as ’puffines’.更多还原