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甘薯块根膨大后期β-淀粉酶和淀粉含量相关性分析

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为了研究甘薯β-淀粉酶和淀粉含量相关性,对不同基因型的甘薯薯块在果实膨大期到收获期期间淀粉率和β-淀粉酶活性进行测定.结果表明:多数甘薯薯块淀粉率呈升高趋势,升幅为1到5个百分点,而β-淀粉酶活性多呈下降趋势,并且不同品系间的酶活性差异较大.相关性分析表明,甘薯膨大后期,薯块中淀粉率变化和β-淀粉酶活性变化有一定相关性,但不同基因型的相关性正负和显著性有所区别.
Analysis on relativity between the starch contents and β-amylase activities during storageroot development later stage of sweetpotato
For the purpose of investigated the correlation of β-amylase activities and starch contents,the starch contents and β-amylase activities in the roots of different genotypes of sweetpotato during fruit-development stage were measured.The results showed that the starch contents of most genotype sweetpotatoes increased during the 28d period with the rate of 1% ~5%.In the meantime,β-amylase activities of most sweetpotato strains decreased significantly.Correlation analysis indicated that the changes of the starch contents were related to the changes of β-amylase activities,but the plus-minus relativities and the significances varied among those different genotypes.

sweetpotatofruit-development stagestarch contentamylase activity

陈显让、李红兵、康乐、郭尚洙、邓西平

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西北农林科技大学资源环境学院,陕西杨凌712100

黄土高原土壤侵蚀与旱地农业国家重点实验室,中国科学院水利部水土保持研究所,陕西杨凌712100

西北农林科技大学林学院,陕西杨凌712100

韩国生命工学研究院,韩国大田305-806

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甘薯 果实膨大期 收获期 淀粉率 淀粉酶活性

国际科技合作项目

2010DFA91930

2013

食品工业科技
北京一轻研究院

食品工业科技

CSTPCDCSCD北大核心
影响因子:0.842
ISSN:1002-0306
年,卷(期):2013.34(19)
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