大果型和小果型荔枝品种果实发育细胞学和生理学比较  

A Cytological and Physiological Study of Large-and Small-sized Litchi Cultivars Fruit

作　　者：李建国[1] 黄旭明[1] 黄辉白[1] 周碧燕[1] 

机构地区：[1]华南农业大学园艺系,广东广州510642

出　　处：《果树学报》2002年第3期158-162,共5页Journal of Fruit Science

基　　金：广东省自然科学基金(960440);国家自然科学基金(39770529)资助。

摘　　要：以大果型鹅蛋荔和小果型淮枝品种为对比试材,研究结果表明,两者果实干重、鲜重均相差2.6倍以上;鹅蛋荔大于淮枝既有库大小的原因,也与库活性大小有关;库大小主要体现在细胞数量上而与细胞大小无关;在果实发育期间,大果型的鹅蛋荔果皮中ZRs含量和ZRs/ABA一直高于小果型的淮枝;鹅蛋荔果实的呼吸率高于淮枝。Large-fruited'Edanli'litchi and small-fruited'Huaizhi'litchi were studied in comparison.The former was2.6times larger in weight than the latter.It was found that difference in fruit size between these two cultivars was related to both sink size and sink activity.Sink size was better expressed as cell number rather than being expressed as cell size.Cell number in the pericarp of'Edanli'was significantly greater than that of'Huaizhi'and no significance of difference in cell size was found between them.Sink strength(AGR)of'Edanli'was greater than that of'Huaizhi'throughout the whole stage of fruit development,yet not being the same case with sink activity(RGR).Large-fruited'Edanli'showed consistently higher level of ZRs and higher ratio of ZRs/ABA in the pericarp than did the small-fruited'Huaizhi'during fruit development.Significantly higher respiration rate was determined in'Edanli'as compared with'Huaizhi'.

关 键 词：荔枝 果实 果实库强 大果型 小果型 发育细胞学 生理学 鹅蛋荔 淮枝 

分 类 号：S667.1[农业科学—果树学] Q942.5[农业科学—园艺学]