Abstract: The effects of exogenous GA₃ and ABA treatments on quality of Cara Cara orange before fruit coloring were studied. The results showed that GA₃ treatment improved the rind brightness but decreased the rind redness, rind yellowness and individual fruit weight; ABA treatment improved the rind redness but decreased rind brightness and yellowness. Although 100mg/L GA₃ treatment highly significantly decreased the rind thickness and increased rind brightness, total of soluble solid and vitamin C, it also decreased the rind redness, the ratio of sugar to acid and increased the acid content. Meanwhile,ABA treatment highly significantly reduced the percentage of edible part, percentage of fruit juice and VitC content. Exogenous GA₃ and ABA treatments before fruit coloring were unfavourable to the quality of Cara Cara orange.

Key words: Cara Cara orange, fruit quality, ABA, GA₃

摘要： 以生长一致的红肉脐橙成年植株为试材,研究了果实转色前外源GA₃和ABA处理对果实品质的影响。结果表明,外源GA₃处理提高了果皮亮度,但降低了果皮红色度、黄色度和单果重;ABA处理提高了果皮红色度,但降低了果皮亮度;GA₃100mg/L处理虽然极显著降低了果皮厚度,极显著提高了果皮亮度、可溶性固形物和VitC含量,但同时极显著降低了果皮红色度、糖酸比,并极显著提高了果实含酸量;外源ABA处理还极显著降低了果实可食率、出汁率和VitC含量。因此,在果实转色前用外源GA₃和ABA处理红肉脐橙果实均不利于其综合品质的提高。

关键词: 红肉脐橙, 果实品质, ABA, GA₃