Stability of Genome Composition and Recombination between Homoeologous Chromosomes in Festulolium (Festuca × Lolium) Cultivars

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F17%3A00476565" target="_blank" >RIV/61389030:_____/17:00476565 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1159/000458746" target="_blank" >http://dx.doi.org/10.1159/000458746</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1159/000458746" target="_blank" >10.1159/000458746</a>

Result language

angličtina

Original language name

Stability of Genome Composition and Recombination between Homoeologous Chromosomes in Festulolium (Festuca × Lolium) Cultivars

Original language description

Festulolium are hybrids between fescue (Festuca) and ryegrass (Lolium) species and combine high seed yield of ryegrasses with abiotic stress tolerance of fescues. Chromosomes of Festuca and Lolium present in Festulolium freely pair and recombine, which results in highly variable progeny where every single plant has a unique chromosome constitution. Thus, the stability of the genomic composition in Festulolium cultivars is an important issue. In this work, we used in situ hybridization to examine the genomic composition (understood as the proportion of parental genomes present) over 3 consecutive generations of propagation via outcrossing (the first one being the generation used for cultivar registration) of 3 Festulolium cultivars. Our analysis revealed that the genome composition largely differs among the plants from individual cultivars but appears to be relatively stable over the generations. A gradual shift in the genome composition towards Lolium observed in the early generations of hybrids appears to reach a plateau where the proportions of parental genomes become stabilized. Nevertheless, the proportion remains unbalanced to a certain extent (always in favor of the Lolium genome) in each cultivar. Our observations indicate a possibility to modulate genomic composition in hybrids by breeders' selection without a compromise on stability.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10611 - Plant sciences, botany

Project

<a href="/en/project/LO1204" target="_blank" >LO1204: Sustainable development of research in the Centre of the Region Haná</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Cytogenetic and Genome Research

ISSN

1424-8581

e-ISSN

—

Volume of the periodical

151

Issue of the periodical within the volume

2

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

106-114

UT code for WoS article

000404007600006

EID of the result in the Scopus database

2-s2.0-85015620521