对发展乔纳金苹果的几点看法刘志坚（烟台市果树科学研究所２６４００４）最早的乔纳金为美国用金冠×红玉杂交育成的，１９６８年发表，１９７９年引入我国。乔纳金结果早、丰产性强、果个大、外观美、品质好、生食加工兼用，较耐贮藏。在世界各地１９位苹果专家的评比结... Several views on the development of Jonathan Apple Liu Zhijian (Yantai Institute of Fruit Science 264004) The earliest Jonathan for the United States with the Golden Delicious × Hongyu hybrid breeding, published in 1968, introduced to China in 1979. Jonathan results early, high yield and strong, large fruit, the appearance of the United States, good quality, both raw and processed food, more resistant to storage. 19 Apple experts around the world’s competition results ...