Genomic structure and fertility in advanced breeding populations derived from an allotetraploid Festuca pratensis x Lolium perenne cross

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dc.contributor.author Zwierzykowski, Zbigniew
dc.contributor.author Taciak, Magdelena
dc.contributor.author Kosmala, Arkadiusz
dc.contributor.author Krajewski, Paweł
dc.contributor.author Zwierzykowska, Elŝbieta
dc.contributor.author Zwierzykowski, Włodzimierz
dc.contributor.author Książczyk, Tomasz
dc.contributor.author Jones, R. Neil
dc.date.accessioned 2011-06-06T14:27:46Z
dc.date.available 2011-06-06T14:27:46Z
dc.date.issued 2011-08-01
dc.identifier.citation Zwierzykowski , Z , Taciak , M , Kosmala , A , Krajewski , P , Zwierzykowska , E , Zwierzykowski , W , Książczyk , T & Jones , R N 2011 , ' Genomic structure and fertility in advanced breeding populations derived from an allotetraploid Festuca pratensis x Lolium perenne cross ' Plant Breeding , vol 130 , no. 4 , pp. 476-480 . en
dc.identifier.issn 1439-0523
dc.identifier.other PURE: 166067
dc.identifier.other dspace: 2160/6943
dc.identifier.uri http://hdl.handle.net/2160/6943
dc.description Zwierzykowski, Z., Zwierzykowska, E., Taciak, M., Kosmala, A., Jones, R. N., Zwierzykowski, W., Ksiazczyk, T., Krajewski, P. (2011). Genomic structure and fertility in advanced breeding populations derived from an allotetraploid Festuca pratensis x Lolium perenne cross. Plant Breeding, 130, (2), (A) IMPF: 01.59 en
dc.description.abstract The development of grass cultivars derived from Festulolium hybrids is mostly limited because of their genetic instability and low fertility. The objective of this was to assess the genomic structure and fertility in two advanced breeding populations derived from an interspecific hybrid between Festuca pratensis Huds. (2n = 4× = 28) and Lolium perenne L. (2n = 4× = 28). Examination based on genomic in situ hybridization analyses of randomly chosen plants in the F7 and F8 generations, as well as those from earlier generations, indicated progressive changes in genome balance towards that of Lolium. The ‘dominance’ of Lolium chromatin over Festuca likely resulted from extensive recombination between chromosomes of the parental genomes, together with substitutions of whole Festuca chromosomes by whole Lolium chromosomes. The number of recombinant chromosomes and recombination breakpoints per genotype increased in successive generations, but their number was higher for Festuca than for Lolium. Because the mean seed set was only 38.2% in the F8 generation, it was concluded that the F. pratensis × L. perenne amphiploids cannot be included successfully in a Festulolium breeding programme. en
dc.format.extent 5 en
dc.language.iso eng
dc.relation.ispartof Plant Breeding en
dc.title Genomic structure and fertility in advanced breeding populations derived from an allotetraploid Festuca pratensis x Lolium perenne cross en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1111/j.1439-0523.2010.01839.x
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en


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