Ergebnisse einer zytologischen Untersuchung der Familie der Geraniaceae. I

Gauger, Wendell

doi:10.1007/bf01914322

Cited by 32 publications

(15 citation statements)

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“…Fifty-five species of Erodium share a basic chromosome number of x 5 10, whereas eight to ten species could have x 5 9 and one x 5 8. Chromosome numbers of 2n 5 20, 36, 40, 42, 48, 54, 60 in E. cicutarium suggest dysploidy, which is rare in the genus (Gauger 1937;Rottgardt 1956). Reports of two chromosome numbers (2n 5 18, 20) in E. oxyrrhynchum, E. gutattum, and E. pelargoniflorum need further investigation.…”

Section: Discussionmentioning

confidence: 96%

Phylogenetic Relationships and Evolution in Erodium (Geraniaceae) based on trnL-trnF Sequences

Fiz¹,

Vargas²,

Alarcón³

et al. 2006

issn: 0363-6445

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Phylogenetic reconstructions in the Mediterranean genus Erodium are for the first time performed using two matrices: one with 96 trnL-trnF sequences from Erodium (90 accessions plus four outgroups) and the other with 72 trnL-trnF sequences plus 23 morphological characters (66 species of a total of 74), using Maximum Parsimony (MP) and Bayesian Inference (BI). An association between reproductive properties (high selfing rates, flower asymmetry, insect-attraction structures), life form, and breeding system distributed in different lineages suggests multiple shifts from allogamy to autogamy in the course of evolution, whereas dioecy has occurred only once. The phylogenetic analyses revealed a remarkable capability for dispersal in Erodium because closely related species occur in different continents. Major lineages containing sublineages of species also from several continents lead us to interpret ancient dispersal activity. Establishment of Mediterranean-like climates in most continents may have been crucial in the evolution of Erodium, as manifested by occurrence of species of the Mediterranean floristic region in the four major lineages. The body of knowledge accumulated from molecular phylogenetics and morphology lead us to conclude that the Mediterranean region harbors the major center of diversity of Erodium, where active radiation in dry, disturbed environments, is still operating.

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Section: Discussionmentioning

confidence: 96%

Phylogenetic Relationships and Evolution in Erodium (Geraniaceae) based on trnL-trnF Sequences

Fiz¹,

Vargas²,

Alarcón³

et al. 2006

issn: 0363-6445

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“…Table 1 Ref. : Gauger 1937, Guittonneau 1964, 1965, 1967 Ref. : Levitsky & Kuzmina 1927, Stahlin 1929, Radeloff 1930, Litardiere -1923,1950, Gervais 1965 …”

Section: Methodsmentioning

confidence: 99%

Cytological Studies in Some Flowering Plants From Southern France

Loon¹,

Gadella²,

Kliphuis³

1971

Acta Botanica Neerlandica

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“…It is possible the 2n = 34 cytotypes found here are of aneuploid origin, (ie 2n = 4x -2 = 34), since 2n = 36 is commonly found in the genus and has also been recorded by other workers (Gauger 1937, Warburg 1938 1974). Alternatively, 2n = 34 could be allotetraploid originating from unknown or extinct 2n = 16 and 18 races, as suggested by Gibby & Westfold (1986) in P. alchemilloides.…”

Section: Distribution P Endlicherianum Has a Widespread Distributiomentioning

confidence: 82%

“…Counts of 2n = 34 were consistently seen in all the slides of P. endlicherianum from all four localities and also the P. quercetorum material. Other workers, however, found 2n = 36 for P. endlicherianum using sectioned material (Gauger 1937, Warburg 1938, Kentzinger 1974. Only Kentzinger gives locality data, Gauger and Warburg citing Botanic Gardens as the source of their material.…”

Section: Distribution P Endlicherianum Has a Widespread Distributiomentioning

confidence: 95%