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dc.contributor.author
Do Canto, Javier
dc.contributor.author
Studer, Bruno
dc.contributor.author
Frei, Ursula
dc.contributor.author
Lubberstedt, Thomas
dc.date.accessioned
2020-08-28T11:01:58Z
dc.date.available
2020-08-28T11:01:58Z
dc.date.issued
2019-10-17
dc.identifier.issn
0179-9541
dc.identifier.issn
1439-0523
dc.identifier.other
10.1111/pbr.12765
dc.identifier.uri
http://hdl.handle.net/20.500.11850/437277
dc.description.abstract
A mutation causing self-fertility (SF) in perennial ryegrass was studied at the tetraploid level. The aim of this work was to determine a) whether SF remains functional in a tetraploid population and b) whether the SF mutation expresses dominance in heterozygous pollen grains. A tetraploidized plant carrying SF alleles was self-pollinated to create a segregating F-2 population. In the F-2 individuals, pollen compatibility ranged between 38% and 84% showing that SF remained functional. The SF locus genotype was the main determinant of pollen compatibility explaining 78% of the variation. The observed segregation was significantly different from the expected under both SF being dominant or recessive models (P-(chi 2)<= 0.001) and tended to be intermediate between them, indicating partial dominance or additive gene action. The frequency of the different genotypes suggested that pollen grains homozygous for the mutation have a competitive advantage over heterozygous pollen and that pollen compatibility is affected by the interaction with additional loci. The implications of our results for breeding polyploid grasses are discussed.
dc.publisher
WILEY
dc.subject
perennial ryegrass
dc.subject
segregation
dc.subject
self-fertility
dc.subject
tetraploid
dc.title
Pattern of inheritance of a self-fertility gene in an autotetraploid perennial ryegrass (Lolium perenne) population
dc.type
Journal Article
ethz.journal.title
Plant Breeding
ethz.journal.volume
139
ethz.journal.issue
1
ethz.journal.abbreviated
Plant breed.
ethz.pages.start
207
ethz.pages.end
213
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
HOBOKEN
ethz.source
WOS
ethz.rosetta.exportRequired
true
ethz.COinS
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