摘要
为比较不同甘薯品种的块根在储藏过程中淀粉含量的变化趋势,对四川地区栽培的4个甘薯品种(系)在不同储藏期的鲜薯淀粉含量、还原糖含量以及淀粉酶活性进行测定.结果表明:川薯34、南薯88和力源1号在储藏过程中淀粉含量变化较大,1个月时的淀粉含量下降量超过10%,3个月时可下降30%以上;徐薯18的淀粉含量在前期下降很慢,在2个月内淀粉含量下降仅5%,整个储藏期(97d)结束时下降量也明显低于其他3个品种.徐薯18的淀粉酶含量和酶活性在整个储存期的变化不明显,而还原糖含量在储藏期的第2个月内最高.因此,与其他3个甘薯品种(系)相较,目前广泛栽培的甘薯品种——徐薯18表现出很好的淀粉耐储藏性.
In order to compare the changes in root starch content among different sweet potato cultivars during storage period,the contents of starch,reducing sugars and amylase activities of four sweet potato cultivars cultivated in Sichuan were determined.The results showed that the starch contents of 3 cultivars （Nanshu 88,chuanshu 34 and Liyuan 1） were dramatically reduced at a rate more than 10% in one month and 30% in three months,while Xushu 18 displayed a much lower reducing rate of its starch content during storage,i.e.,5% in 2 months and 24% in 3 months.However,the amount and activity of amylase of Xushu 18 did not show apparent changes during storage.The results from the analysis of the reducing sugar of Xushu 18 showed that the content of reducing sugar was the highest in the 2 nd month.Therefore,Xushu 18 is much better than the other three cultivars in the character of starch storage.
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2010年第5期741-744,共4页
Chinese Journal of Applied and Environmental Biology
基金
国家科技支撑计划项目(No.2007BAD78B03)资助~~
关键词
甘薯
储藏
淀粉含量
徐薯18
淀粉酶
sweet potato
storage
starch content
Xushu 18
amylase
