Genes and traits associated with chromosome 2H and 5H regions controlling sensitivity of reproductive tissues to frost in barley

Simple item page
dc.contributor.authorChen, A.
dc.contributor.authorReinheimer, J.
dc.contributor.authorBrûlé-Babel, A.
dc.contributor.authorBaumann, U.
dc.contributor.authorPallotta, M.
dc.contributor.authorFincher, G.
dc.contributor.authorCollins, N.
dc.date.issued2009
dc.descriptionThe original publication can be found at www.springerlink.com
dc.description.abstractFrost at flowering can cause significant damage to cereal crops. QTL for low temperature tolerance in reproductive tissues (LTR tolerance) were previously described on barley 2HL and 5HL chromosome arms. With the aim of identifying potential LTR tolerance mechanisms, barley Amagi Nijo × WI2585 and Haruna Nijo × Galleon populations were examined for flowering time and spike morphology traits associated with the LTR tolerance loci. In spring-type progeny of both crosses, winter alleles at the Vrn-H1 vernalization response locus on 5H were linked in coupling with LTR tolerance and were unexpectedly associated with earlier flowering. In contrast, tolerance on 2HL was coupled with late flowering alleles at a locus we named Flt-2L. Both chromosome regions influenced chasmogamy/cleistogamy (open/closed florets), although tolerance was associated with cleistogamy at the 2HL locus and chasmogamy at the 5HL locus. LTR tolerance controlled by both loci was accompanied by shorter spikes, which were due to fewer florets per spike on 5HL, but shorter rachis internodes on 2HL. The Eps-2S locus also segregated in both crosses and influenced spike length and flowering time but not LTR tolerance. Thus, none of the traits was consistently correlated with LTR tolerance, suggesting that the tolerance may be due to some other visible trait or an intrinsic (biochemical) property. Winter alleles at the Vrn-H1 locus and short rachis internodes may be of potential use in barley breeding, as markers for selection of LTR tolerance at 5HL and 2HL loci, respectively.
dc.description.statementofresponsibilityAndrew Chen, Jason Reinheimer, Anita Brûlé-Babel, Ute Baumann, Margaret Pallotta, Geoffrey B. Fincher and Nicholas C. Collins
dc.identifier.citationTheoretical and Applied Genetics: international journal of plant breeding research, 2009; 118(8):1465-1476
dc.identifier.doi10.1007/s00122-009-0995-4
dc.identifier.issn0040-5752
dc.identifier.issn1432-2242
dc.identifier.orcidBaumann, U. [0000-0003-1281-598X]
dc.identifier.orcidPallotta, M. [0000-0002-1642-5623]
dc.identifier.orcidCollins, N. [0000-0002-5447-6755]
dc.identifier.urihttp://hdl.handle.net/2440/54733
dc.language.isoen
dc.publisherSpringer
dc.relation.grantARC
dc.source.urihttps://doi.org/10.1007/s00122-009-0995-4
dc.subjectChromosomes, Plant
dc.subjectCentromere
dc.subjectHordeum
dc.subjectFlowers
dc.subjectGenetic Markers
dc.subjectChromosome Mapping
dc.subjectCrosses, Genetic
dc.subjectCold Climate
dc.subjectSeasons
dc.subjectReproduction
dc.subjectGenotype
dc.subjectHaploidy
dc.subjectAlleles
dc.subjectGenes, Plant
dc.subjectQuantitative Trait Loci
dc.titleGenes and traits associated with chromosome 2H and 5H regions controlling sensitivity of reproductive tissues to frost in barley
dc.typeJournal article
pubs.publication-statusPublished

Files

Collections

Agriculture, Food and Wine publications