Full TGIF Record # 186607
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DOI:10.1111/j.1439-0523.2010.01839.x
Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0523.2010.01839.x/pdf
    Last checked: 08/02/2011
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http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0523.2010.01839.x/full
    Last checked: 08/02/2011
    Access conditions: Item is located within a limited-access website
Publication Type:
i
Refereed
Author(s):Zwierzykowski, Zbigniew; Zwierzykowska, Elŝbieta; Taciak, Magdalena; Kosmala, Arkadiusz; Jones, R. Neil; Zwierzykowski, Wlodziemierz; Ksi^D{ażczyk, Tomasz; Krajewski, Pawel
Author Affiliation:Zwierzykowski, Z., Zwierzykowska, Taciak, Kosmala, Zwierzykowski, W., Ksi^D{ażczyk, and Krajewski: Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland; Jones: Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, Wales, UK
Title:Genomic structure and fertility in advanced breeding populations derived from an allotetraploid Festuca pratensis x Lolium perenne cross
Source:Plant Breeding. Vol. 130, No. 4, August 2011, p. 476-480.
Publishing Information:Berlin: P. Parey
# of Pages:5
Related Web URL:http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0523.2010.01839.x/abstract
    Last checked: 08/02/2011
    Notes: Abstract only
Keywords:TIC Keywords: Breeding program; Chromosome analysis; Cultivar improvement; Fertility; Festuca pratensis; Festulolium; Structural genomics; Interspecific hybridization; Lolium perenne; Pollen analysis
Abstract/Contents:"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 = 4x = 28) and Lolium perenne L. (2n = 4x = 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 x L. perenne amphiploids cannot be included successfully in a Festulolium breeding programme."
Language:English
References:22
Note:Figures
Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zwierzykowski, Z., E. Zwierzykowska, M. Taciak, A. Kosmala, R. N. Jones, W. Zwierzykowski, et al. 2011. Genomic structure and fertility in advanced breeding populations derived from an allotetraploid Festuca pratensis x Lolium perenne cross. Plant Breed. 130(4):p. 476-480.
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DOI: 10.1111/j.1439-0523.2010.01839.x
Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0523.2010.01839.x/pdf
    Last checked: 08/02/2011
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0523.2010.01839.x/full
    Last checked: 08/02/2011
    Access conditions: Item is located within a limited-access website
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