Rheological hardness index for assessing hardness of hexaploids and durums

Réka Haraszi, Angela Juhász, Mike Sissons, M. Rakszegi, L. Tamás, Robert S. Anderssen

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Kernel hardness of cereal grains is a fundamental phenotype, and various protocols for its characterization have been proposed. Although, from different perspectives, each has proved useful, these methods do not directly address the rheological (fracturing) response of a grain when subjected to compression. Such information is hidden in the individual crush response profiles (iCRPs) obtained by measuring the response of individual grains to crushing on an SKCS 4100 device. Here, the appropriateness and utility of rheological phenotypes, based on single-kernel measurements, are demonstrated by proposing and validating a new wheat grain hardness phenotype, the rheological hardness index (RHI). It is defined in terms of the rheological phenotype phases (RPPs) of the averaged CRPs (aCRPs) obtained by averaging a large number of iCRPs. The utility of RHI is illustrated by showing how it provides improved insight about the differences in brittleness and compactness of grains from different wheat varieties. This investigation highlights the opportunity that the RPP of the aCRPs represent for obtaining specific quantitative phenotypes for the study of hardness in cereal grains. In particular, successful plant breeding relies on segregating a breeding population into appropriate end-use categories, for which RHI has a potential role to play.

Original languageEnglish
Pages (from-to)430-438
Number of pages9
JournalCereal Chemistry
Volume90
Issue number5
DOIs
Publication statusPublished - Sep 2013

Fingerprint

Hardness
hexaploidy
durum wheat
hardness
Phenotype
phenotype
Triticum
small cereal grains
wheat
crushing
Crushing
Brittleness
seeds
plant breeding
Breeding
Equipment and Supplies
breeding
Population

ASJC Scopus subject areas

  • Food Science
  • Organic Chemistry

Cite this

Rheological hardness index for assessing hardness of hexaploids and durums. / Haraszi, Réka; Juhász, Angela; Sissons, Mike; Rakszegi, M.; Tamás, L.; Anderssen, Robert S.

In: Cereal Chemistry, Vol. 90, No. 5, 09.2013, p. 430-438.

Research output: Contribution to journalArticle

Haraszi, Réka ; Juhász, Angela ; Sissons, Mike ; Rakszegi, M. ; Tamás, L. ; Anderssen, Robert S. / Rheological hardness index for assessing hardness of hexaploids and durums. In: Cereal Chemistry. 2013 ; Vol. 90, No. 5. pp. 430-438.
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