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231223s2011 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erq423
|2 doi
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|a pubmed24n0683.xml
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|a DE-627
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|e rakwb
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|a eng
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|a Howard, Thomas
|e verfasserin
|4 aut
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| 245 |
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|a Identification of a major QTL controlling the content of B-type starch granules in Aegilops
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 15.07.2011
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|a Date Revised 29.01.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Starch within the endosperm of most species of the Triticeae has a unique bimodal granule morphology comprising large lenticular A-type granules and smaller near-spherical B-type granules. However, a few wild wheat species (Aegilops) are known to lack B-granules. Ae. peregrina and a synthetic tetraploid Aegilops with the same genome composition (SU) were found to differ in B-granule number. The synthetic tetraploid had normal A- and B-type starch granules whilst Ae. peregrina had only A-granules because the B-granules failed to initiate. A population segregating for B-granule number was generated by crossing these two accessions and was used to study the genetic basis of B-granule initiation. A combination of Bulked Segregant Analysis and QTL mapping identified a major QTL located on the short arm of chromosome 4S that accounted for 44.4% of the phenotypic variation. The lack of B-granules in polyploid Aegilops with diverse genomes suggests that the B-granule locus has been lost several times independently during the evolution of the Triticeae. It is proposed that the B-granule locus is susceptible to silencing during polyploidization and a model is presented to explain the observed data based on the assumption that the initiation of B-granules is controlled by a single major locus per haploid genome
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Starch
|2 NLM
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|a 9005-25-8
|2 NLM
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|a Rejab, Nur Ardiyana
|e verfasserin
|4 aut
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|a Griffiths, Simon
|e verfasserin
|4 aut
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|a Leigh, Fiona
|e verfasserin
|4 aut
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|a Leverington-Waite, Michelle
|e verfasserin
|4 aut
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|a Simmonds, James
|e verfasserin
|4 aut
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|a Uauy, Cristobal
|e verfasserin
|4 aut
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|a Trafford, Kay
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 62(2011), 6 vom: 01. März, Seite 2217-28
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:62
|g year:2011
|g number:6
|g day:01
|g month:03
|g pages:2217-28
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|u http://dx.doi.org/10.1093/jxb/erq423
|3 Volltext
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