Inheritance of day-neutrality in octoploid species of Fragaria

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dc.authorscopusid6602209656
dc.authorscopusid7202389353
dc.contributor.authorSerçe, Sedat
dc.contributor.authorHancock, James F.
dc.date.accessioned2024-09-19T15:45:22Z
dc.date.available2024-09-19T15:45:22Z
dc.date.issued2005
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractThe inheritance of day-neutrality in octoploid Fragaria L. was investigated in crosses between day-neutral (DN) x short day (SD) and DN x DN types using F. xananassa Duchesne in Lamarck cultivars and elite selections of F. virginiana Miller and F. chiloensis (L.) Miller. Genotypes were considered as DN if they flowered under both the SDs of spring before 30 May (<14 hours) and the long days of summer after 24 July (>15 hours). Wide ranges in the percentage of DN progeny were found among the families regardless of species background (30 % to 87 % in DN x SD and 22% to 93% in DN x DN crosses). None of the families fit the segregation ratios expected if DN was regulated by recessive alleles at one locus, and only about half of the families fit the segregation ratios expected if a single dominant allele regulated DN. Several two-gene models fit the segregation data better than the single locus ones, but none of the genetic models tested fit the DN segregation ratios at the ends of the distribution range. The wide range observed in the percentage of DN progeny across all the families is most consistent with a polygenic model. Several other kinds of observations supported the multigenic regulation of DN: 1) Different DN parents crossed to the same SD genotype often produced different percentages of DN progeny, 2) Some of the day-neutrality sources were more powerful than others in producing of DNs, and 3) None of the DN parents produced 100% DN progeny, which would be expected if there were homozygous dominant DN individuals. Specific combining abilities for DN and flowering strength were significant, while general combining abilities for these traits were not. Our results suggest that parental combinations can be selected that will generate very high proportions of DN progeny that bloom for long periods of time.en_US
dc.identifier.doi10.21273/jashs.130.4.580
dc.identifier.endpage584en_US
dc.identifier.issn0003-1062
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-21544469440en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage580en_US
dc.identifier.urihttps://doi.org/10.21273/jashs.130.4.580
dc.identifier.urihttps://hdl.handle.net/20.500.12483/14620
dc.identifier.volume130en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAmerican Society for Horticultural Scienceen_US
dc.relation.ispartofJournal of the American Society for Horticultural Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectBreedingen_US
dc.subjectGermplasmen_US
dc.subjectStrawberryen_US
dc.subjectWild materialen_US
dc.titleInheritance of day-neutrality in octoploid species of Fragariaen_US
dc.typeArticleen_US

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