Genetic variation in starch physicochemical properties of Chinese foxtail millet (Setaria italica Beauv.)

Kehu Li, Tongze Zhang, Zhongquan Sui, Shwetha Narayanamoorthy, Can Jin, Shunguo Li*, Harold Corke

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

In this study, 34 Chinese foxtail millet germplasm accessions (cultivars and breeding lines) were characterized for starch physicochemical properties including apparent amylose content, and gel textural, RVA pasting, thermal and retrogradation properties. The relationships among 21 starch parameters were discussed based on correlation analysis and hierarchical cluster analysis. Generally, this set of germplasm presented a surprisingly low genetic diversity in starch properties. The apparent amylose content ranged from 18.3% to 25.3% with a CV value of 5.0%, and gelatinization temperature ranged from 72.1 to 73.8 °C with a CV value of 0.5%. AAC was negatively correlated only with ΔH g (p < 0.01) while GT only had a strong relationship with T o and T c of thermal properties (p < 0.001). The 21 measured starch parameters could be separated into three groups based on cluster analysis. This work should provide useful information for breeding improved quality foxtail millet.

Original languageEnglish
Pages (from-to)337-345
Number of pages9
JournalInternational Journal of Biological Macromolecules
Volume133
DOIs
StatePublished - 15 Jul 2019
Externally publishedYes

Keywords

  • Foxtail millet
  • Genetic diversity
  • Starch physicochemical properties

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