中国农业大学学报2012，Vol.17Issue(4)：75-80,6.
休眠期欧李碳水化合物代谢与休眠关系的分析
Relation of bud dormancy to carbohydrate metabolism in Cerasus humilis （Bge.） Sok.
摘要
Abstract
This paper is concerned on the relation of bud dormancy to carbohydrate metabolism, The annual shoots from underground stem was used as the experimental materials. The components of carbohydrates and the enzymes activities were measured in phloem and bud of dormant Cerasus humilis （Bge.） Sok. The results indicated that soluble sugar content was higher than starch in phloem and bud in dormancy period. The highest ratio of soluble sugar and starch reached to 4.77. Most sugar was sucrose and then fructose, sorbitol and glucose. A few amount of fructose in bud were detected in natural dormancy stage. But its content increased rapidly in enhanced dormancy stage and in germination period,reaching to 2.05% in germination period. The changes in enzyme activities in phloem and bud were in line with that of soluble sugar. The activity of SPS was higher than that of other enzymes, but quickly decreased in natural dormancy stage,and reached to minimum at the end of the natural dormancy. The reduction in bud and phloem was 94. 18% and 84.78% respectively. The activity of p-amylase was higher that of a-amylase. Based on the integrated analyses above,the main accumulated carbohydrate in dormant Chinese dwarf cherry was soluble sugar. The relief of natural dormancy was obviously linked with the change of sucrose and reduction of the SPS activity. Change in the fructose contents was related to the dormancy and germination of bud.关键词
欧李/休眠期/碳水化合物/酶活性/休眠Key words
Cerasushumilis (Bge.)Sok./dormancy stage/carbohydrate/enzyme activity/dormancy分类
农业科技引用本文复制引用
李秀珍,陈苏丹,李天忠..休眠期欧李碳水化合物代谢与休眠关系的分析[J].中国农业大学学报,2012,17(4):75-80,6.基金项目
河南省科技攻关项目 （）
