乔纳金苹果优系的选育是省科委下达的课题项目。1994年立项以来,经过4年初选、复选,首批选出的4个优系乔纳金,于1997年10月13日,通过了省科委主持的国内专家鉴定。现将选育经过简报如下。 一、选育的目的和意义 乔纳金苹果以其适应性强、早结果、丰产、果个大、色泽艳丽、风味美而深受栽培者欢迎和消费者青睐。已成为世界主要发展的三大品种之一。80年代开始,苹果生产得到了迅猛发展, Jonathan apple system selection is the subject of the project issued by the Provincial Science and Technology Commission. Since its establishment in 1994, after 4 years of preliminary election and check-up, the first four selected Jonathan Goldsmiths passed the appraisal of domestic experts chaired by the Provincial Science and Technology Commission on October 13, 1997. Breeding will now be briefed as follows. First, the purpose and significance of breeding Jonathan Apple with its strong adaptability, early results, high yield, fruit a large, bright color, the United States and flavor by the grower welcomed and consumers. It has become one of the three major developments in the world. The beginning of the 80’s, Apple’s production has been rapid development,