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Microsatellite DNA Genotyping and Flow Cytometry Ploidy Analyses of Formalin-fixed Paraffin-embedded Hydatidiform Molar Tissues
Published on: October 20, 2019
Genetic diversity of potato genotypes estimated by starch physicochemical properties and microsatellite markers
Sulaiman Ahmed1, Xin Zhou1, Yuehan Pang1
1Institute of Nuclear Agricultural Sciences, College of Agriculture and Biotechnology, Zhejiang University, Huajiachi Campus, Hangzhou 310029, China.
Abstract:
Genetic diversity of 29 potato genotypes was estimated by their starch physicochemical properties and microsatellite markers. The apparent amylose content (AAC) of potato starches averaged 25.3%, ranging from 18.9 to 29.4%. Significance differences were observed in pasting and gel texture properties among potato accessions. Wide genetic diversity was also found in the gelatinization temperatures (To, Tp, Tc), enthalpies of gelatinization, enthalpies of retrogradation and retrogradation percentage, which had ranges of 62.2-67.6 °C, 66.1-71.1 °C, 73.5-77.4 °C, 17.5-21.0 J/g, 1.95-4.41 J/g, and 10.6-21.4%, respectively. AAC had significant correlation with pasting viscosities and gel hardness, but had no correlation with thermal and retrogradation properties. The grouping of the potato genotypes using 30 microsatellite markers did not correspond to that drawn using the starch physicochemical properties. Molecular analysis revealed that genotypes with interesting starch properties were distributed among three clusters. Potato starches exhibited interesting physiochemical properties could be applied in food and industrial applications.
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