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Statements

Subject Item
n2:RIV%2F26784246%3A_____%2F12%3A%230000549%21RIV13-MSM-26784246
rdf:type
skos:Concept n11:Vysledek
dcterms:description
The distinctness of, and overlap between, pea genotypes held in several Pisum germplasm collections has been used to determine their relatedness and to test previous ideas about the genetic diversity of Pisum. Our characterisation of genetic diversity among 4,538 Pisum accessions held in 7 European Genebanks has identified sources of novel genetic variation, and both reinforces and refines previous interpretations of the overall structure of genetic diversity in Pisum. Molecular marker analysis was based upon the presence/absence of polymorphism of retrotransposon insertions scored by a high-throughput microarray and SSAP approaches. We conclude that the diversity of Pisum constitutes a broad continuum, with graded differentiation into sub-populations which display various degrees of distinctness. The most distinct genetic groups correspond to the named taxa while the cultivars and landraces of Pisum sativum can be divided into two broad types, one of which is strongly enriched for modern cultivars. The addition of germplasm sets from six European Genebanks, chosen to represent high diversity, to a single collection previously studied with these markers resulted in modest additions to the overall diversity observed, suggesting that the great majority of the total genetic diversity collected for the Pisum genus has now been described. Two interesting sources of novel genetic variation have been identified. Finally, we have proposed reference sets of core accessions with a range of sample sizes to represent Pisum diversity for the future study and exploitation by researchers and breeders. The distinctness of, and overlap between, pea genotypes held in several Pisum germplasm collections has been used to determine their relatedness and to test previous ideas about the genetic diversity of Pisum. Our characterisation of genetic diversity among 4,538 Pisum accessions held in 7 European Genebanks has identified sources of novel genetic variation, and both reinforces and refines previous interpretations of the overall structure of genetic diversity in Pisum. Molecular marker analysis was based upon the presence/absence of polymorphism of retrotransposon insertions scored by a high-throughput microarray and SSAP approaches. We conclude that the diversity of Pisum constitutes a broad continuum, with graded differentiation into sub-populations which display various degrees of distinctness. The most distinct genetic groups correspond to the named taxa while the cultivars and landraces of Pisum sativum can be divided into two broad types, one of which is strongly enriched for modern cultivars. The addition of germplasm sets from six European Genebanks, chosen to represent high diversity, to a single collection previously studied with these markers resulted in modest additions to the overall diversity observed, suggesting that the great majority of the total genetic diversity collected for the Pisum genus has now been described. Two interesting sources of novel genetic variation have been identified. Finally, we have proposed reference sets of core accessions with a range of sample sizes to represent Pisum diversity for the future study and exploitation by researchers and breeders.
dcterms:title
Genetic diversity in European Pisum germplasm collections Genetic diversity in European Pisum germplasm collections
skos:prefLabel
Genetic diversity in European Pisum germplasm collections Genetic diversity in European Pisum germplasm collections
skos:notation
RIV/26784246:_____/12:#0000549!RIV13-MSM-26784246
n11:predkladatel
n12:ico%3A26784246
n3:aktivita
n17:Z
n3:aktivity
Z(MSM2678424601)
n3:cisloPeriodika
2
n3:dodaniDat
n10:2013
n3:domaciTvurceVysledku
n6:7711700 n6:2404257
n3:druhVysledku
n14:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
137902
n3:idVysledku
RIV/26784246:_____/12:#0000549
n3:jazykVysledku
n15:eng
n3:klicovaSlova
FIELD PEA PISUM; MARKER ANALYSIS; TRANSPOSABLE ELEMENTS; POPULATION-STRUCTURE; RETROTRANSPOSON; POLYMORPHISMS; CULTIVARS
n3:klicoveSlovo
n4:CULTIVARS n4:MARKER%20ANALYSIS n4:RETROTRANSPOSON n4:FIELD%20PEA%20PISUM n4:TRANSPOSABLE%20ELEMENTS n4:POLYMORPHISMS n4:POPULATION-STRUCTURE
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[CB5D08FFA06E]
n3:nazevZdroje
THEORETICAL AND APPLIED GENETICS
n3:obor
n16:EB
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
16
n3:rokUplatneniVysledku
n10:2012
n3:svazekPeriodika
125
n3:tvurceVysledku
Hýbl, Miroslav Smýkal, Petr
n3:wos
000305217300014
n3:zamer
n13:MSM2678424601
s:issn
0040-5752
s:numberOfPages
14
n5:doi
10.1007/s00122-012-1839-1