文献类型：期刊文献

中文题名：甘薯生长发育过程中可溶性糖含量与淀粉积累的关系

英文题名：Relation of starch accumulation with free sugars in the sweet potato(Lpomoea batatas)

作者：沈淞海[1];沈海铭[1];吴建华[1]

机构：[1]浙江农业大学农学系,绍兴师范专科学校生化系,浙江省景宁畲族自治县农业局

年份：1994

卷号：20

期号：4

起止页码：400

中文期刊名：浙江农业大学学报

外文期刊名：Journal of Zhejiang Agricultural University

收录：CSCD2011_2012、CSCD

语种：中文

中文关键词：甘薯;淀粉积累;游离糖

外文关键词：sweet potato;starch accumulation;free sugar

中文摘要：以甘薯品种徐薯１８为材料，测定了甘薯各生育阶段块根的淀粉积累量和叶片、块根的游离糖含量．结果表明，薯叶总糖含量范围为１．２—７．７ｍｇ／ｇＦＷ．当总糖水平呈上升趋势（还原糖约占总糖的９５％，蔗糖占非还原糖９５％以上）时，块根淀粉积累快；在雨季和收获期，总糖水平下降，还原糖和蔗糖所占比例亦降低，块根淀粉积累速率低．甘薯块根总糖含量在２０．３—３７．０ｍｇ／ｇＦＷ时淀粉积累率高，总糖水平低．在生育前期，随着甘薯的生长，还原糖含量下降而蔗糖含量增加并保持占非还原糖的１００％；在生育后期，还原糖增加而蔗糖含量下降（但仍保持占非还原糖９０％以上）．淀粉积累率低时，块根总糖水平急剧升高．

外文摘要：The relation of starch accumulation with free sugars at different growth stages in the sweet potato variety Xushu 18 was studied.When starch accumulated at a high rate,the total sugar levels showed an upward trend in leaves and a falling tendency in tubers,and the ratio of reducing sugars to total sugars kept as high as 95%in leaves,and that of sucrose to total nonreducing sugars was almost at 100%in both leaves and tubers.Starch accumlation rate declined in raining days and at the harvest time,the contents of the reducing sugars in tubers and the nonreducing sugars (ex-cept sucrose)in leaves and tubers were greatly increased.