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.