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Volume 25 Issue 6
Nov.  2011
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TANG Jun, ZHOU Zhi-lin, ZHAO Dong-lan, CAO Qing-he. Change of amylase content in storage and its effect on germination of sweet potatoes[J]. Fujian Journal of Agricultural Sciences, 2010, 25(6): 699-702.
Citation: TANG Jun, ZHOU Zhi-lin, ZHAO Dong-lan, CAO Qing-he. Change of amylase content in storage and its effect on germination of sweet potatoes[J]. Fujian Journal of Agricultural Sciences, 2010, 25(6): 699-702.

Change of amylase content in storage and its effect on germination of sweet potatoes

  • Received Date: 2010-08-05
  • Rev Recd Date: 2010-11-08
  • Publish Date: 2010-12-15
  • Increasing demand by the food and biomass energy industries has generated a great deal of interest in high-starch sweet potato varieties.This study was to determine the change of amylase content during storage and its correlation with the germination of sweet potatoes.The results showed that all varieties had a peak α-amylase level at harvest and germination.The α-amylase content was stable whether the sweet potatoes were heat-treated or not.The total amylase was constantly low up to 92 days in storage.It increased gradually afterward.The amylase content was lower when subjected to a high-temperature treatment.There was no direct relation found between amylase content and germination rate.However,the high-temperature-treated sweet potatoes had a higher percent of α-amylase during the storage from 112th to 152nd day,as well as a greater sprouting rate than those without the high-temperature treatment.
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  • [1]
    BECK,ZIEGLER P.Biosynthesis and degradation of starch in higher plants[J].Annu Rev Plant Physiol Plant Mol Biol,1989,40:95-117.
    [2]
    ZHANG Y M.Amylase in calli of sweetpotato[J].Journal of plant physiology and molecular biology,2002,28(5):375-378.
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