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ARS Home » Midwest Area » Madison, Wisconsin » Cereal Crops Research » Research » Publications at this Location » Publication #347514

Research Project: Identifying the Next Generation of Malting Barley Through Improved Selection Criteria and Quality Analysis of Breeding Lines

Location: Cereal Crops Research

Title: Genotypic and phenotypic evaulation of preharvest sprouting in two and six row barley varieties

item VETCH, JUSTIN - Montana State University
item Zalapa (tirado), Leslie
item STOUGAARD, BOB - Montana State University
item SHERMAN, JAMIE - Montana State University
item GIROUX, MIKE - Montana State University
item Walling, Jason

Submitted to: Plant and Animal Genome Conference Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 12/11/2018
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Preharvest Sprouting (PHS) is a problem negatively affecting both yields and quality of cereal crops grown world-wide. Preharvest Sprouting can be generalized as the propensity of a seed to begin germination while still on the parent plant and is most widely observed in regions with high humity and/or excessive periods of rain. Barley with signs of PHS is rejexted for malt and can only be sold as feed, results in a loss to the grower of about half the value. Preharvest sprouting is a complex trait involving contributions from both multi-genic and environmental factors. Recently, a gene (TaPHS1), was described in Triticum aestivum (wheat) whose variable genotype and specific gene expression were associated with wheat lines that show either resistance or susceptibility to PHS. Here we present the exonic sequencing and genotypic characterization of the barley (Hordeum vulgare) homolog HvPHS1 in over 120 barley lines. Additionally, we evaluated each of these lines for dormancy using standard germination tests and also for PHS by challenging intact heads to sprout in an artificial rain chamber.