由中国农业科学院果树研究所主持,有14个果树研究单位和大专院校参加的“七五”国家科技攻关专题“果树种质资源主要性状鉴定评价”于1990年12月通过了专家验收。该专题经过5年的协作研究,对苹果、梨、山楂、桃、李、杏、葡萄、草莓、寒地果树、板栗、核桃、柿、柑桔、香蕉、荔枝、龙眼、枇杷等19种果树,进行了园艺性状和果实品质、丰产性、抗寒性、抗病性、抗盐碱、耐贮性、加工特性、矮化特性、染色体倍数性、同工酶等11个项目的鉴定评价,取得了较大的进展和成就。鉴定评价了19种果树种 The fruit science research institute of Chinese Academy of Agricultural Sciences presided over by 14 fruit trees research units and tertiary institutions to participate in the “Seventh Five-Year” national scientific and technological research topic “fruit germplasm resources of the main character appraisal” in December 1990 passed the acceptance of experts. After five years of collaborative research, the project examined 19 fruit trees such as apple, pear, hawthorn, peach, plum, grape, strawberry, winter fruit, chestnut, walnut, persimmon, orange, banana, litchi, longan and loquat , The identification and evaluation of 11 items of horticultural traits and fruit quality, high yield, cold resistance, disease resistance, salt and alkali resistance, storability, processing characteristics, dwarfing characteristics, chromosomal multipleity and isozyme, Great progress and achievements have been made. 19 species of fruit trees were appraised and evaluated