Chromosome numbers and morphology in Trifolium,

Wexelsen, H.

doi:10.5962/bhl.title.61468

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B Genus Trifolium L1

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1953

2014

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Cited by 13 publications

(6 citation statements)

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“…Most of the polyploid species are Old World perennials, with 65% in section Lotoidea (Zohary and Heller, 1984). Hybridization among Trifolium species is rare or non-existant (Wexelsen, 1928;Zohary, 1972). Chromosome numbers are known for at least 184 species of Trifolium (Zohary and Heller, 1984).…”

Section: B Genus Trifolium Lmentioning

confidence: 99%

Legume Crops Phylogeny and Genetic Diversity for Science and Breeding

Smýkal

Coyne

Ambrose

et al. 2014

Critical Reviews in Plant Sciences

269

189

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Section: B Genus Trifolium Lmentioning

confidence: 99%

Legume Crops Phylogeny and Genetic Diversity for Science and Breeding

Smýkal

Coyne

Ambrose

et al. 2014

Critical Reviews in Plant Sciences

269

189

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“…In 1928 WEXEL-SEN (25) attempted to cross nine Trifolium species in 18 combinations, but he did not obtain a single hybrid plant . In 1928 WEXEL-SEN (25) attempted to cross nine Trifolium species in 18 combinations, but he did not obtain a single hybrid plant .…”

Section: Introductionmentioning

confidence: 99%

Species hybridization in Trifolium

Evans

1962

Euphytica

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This investigation confirms the existence of a high degree of incompatibility between species of Trifolium . Two techniques were developed in an attempt to overcome the barriers to hybridization . The first deals with the use of grafting as a screening technique for compatible genotypes, and the second is an embryo culture method for salvaging hybrid embryos which would otherwise abort . The value of these methods is discussed, and the results are compared with those from hybridizations of non-grafted material and of seed set without artificial embryo culture . Hybrids were obtained from three species combinations at different levels of ploidy . SPECIES HYBRIDIZATION IN TRIFOLIUM 1 6 5

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“…1), is polyploid with 2n=28 chromosomes. The report of 2n=32 for T. dubium by Wexelsen (1928) was probably based on a mis-identification and, indeed, Wexelsen actually questioned the identity of the plant in the paper. Earlier searches by Mosquin and Gillett (1965) failed to find voucher specimens to verify the identity of any of the species reported.…”

mentioning

confidence: 99%

“…The only other annual Trifolium species ever reported as polyploid, was T. di- chotomum Hook and Arn. for which Wexelsen (1928) gave a count of 2n=32. No vouchers have been found nor has the report been confirmed.…”

mentioning

confidence: 99%