Karyological differentiation and speciation in C. MediterraneanAnacamptis (Orchidaceae)

Prete, Carlo Del; Mazzola, Pietro; Miceli, Paola

doi:10.1007/bf00940334

Cited by 11 publications

(10 citation statements)

References 5 publications

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“…Frequently, polyploid races are associated to more extreme environmental conditions (Ehrendorfer, 1970;De Wet, 1986). In the orchid Anacamptis pyramidalis (L.) Rich., for example, the polyploid cytotypes are more adapted to regions with geologic formation different from those of diploid populations occurring in the same regions (Del Prete et al, 1991).…”

Section: Chromosome Numbers and Habitat Variationsmentioning

confidence: 99%

Cytogenetics and cytotaxonomy of some Brazilian species of Cymbidioid orchids

Félix

Guerra

2000

Genet. Mol. Biol.

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The Cymbidioid phylad presents the widest chromosome number variation among orchids, with records varying from 2n = 10 in Psygmorchis pusilla to 2n = 168 in two species of Oncidium. In the present work, a total of 44 species were studied belonging to 20 Cymbidioid genera, as a contribution to clarifying the karyological evolution of the group. All the plants investigated were collected in Brazil, mainly in the northeast region. The chromosome variation found was similar to that previously registered in the literature. Chromosome numbers observed were: 2n = 54 (subtribe Eulophiinae), 2n = 44, 46, 92 (subtribe Cyrtopodiinae), 2n = 54, ca. 108 (subtribe Catasetinae), 2n = 52, ca. 96 (subtribe Zygopetalinae), 2n = 40, 80 (subtribe Lycastinae), 2n = 40, 42 (subtribe Maxillariinae), 2n = 40 (subtribe Stanhopeinae), 2n = 56 (subtribe Ornithocephalinae), and 2n = 12, 20, 30, 36, 42, 44, 56, 112, ca. 168 (subtribe Oncidiinae). Interphase nuclei varied widely from simple chromocenter to complex chromocenter types, with no apparent cytotaxonomic value. In the genera Catasetum and Oncidium, the terrestrial and lithophytic species presented higher ploidy levels than the epiphytic species, suggesting a higher adaptability of the polyploids to those habitats. The primary base number x = 7 seems to be associated to the haploid chromosome numbers of most Cymbidioid groups, although n = 7 was observed only in two extant genera of Oncidiinae. For each tribe, subtribe and genus the probable base numbers were discussed along with the possible relationships to the primary base number x 1 = 7 admitted for the whole phylad.

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Section: Chromosome Numbers and Habitat Variationsmentioning

confidence: 99%

Cytogenetics and cytotaxonomy of some Brazilian species of Cymbidioid orchids

Félix

Guerra

2000

Genet. Mol. Biol.

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“…Several authors have also added that it is a sweet-scented orchid with a long spur pollinated by butterflies and moths (Darwin 1877;van der Pijl and Dodson 1969;Cuddy 1993;van der Cingel 1995;Proctor et al 1996). It is known that A. pyramidalis is an evolutionarily plastic species (del Prete et al 1991). The only difference between form fumeauxiana and type species is the appearance of additional spurs on the lateral sepals.…”

Section: Introductionmentioning

confidence: 99%

Studies on the ultrastructure of a three-spurred fumeauxiana form of Anacamptis pyramidalis

Kowalkowska

Margońska

Kozieradzka-Kiszkurno

et al. 2012

Plant Syst Evol

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“…Anacamptis pyramidalis is an evolutionarily plastic species (del Prete et al, 1991), with variable spur length and diameter. The novelty seen in f. fumeauxiana is that the additional spurs developed on the lateral sepals (!…”

Section: Discussionmentioning

confidence: 99%

“…The taxon displays three levels of ploidy: diploids (2n = 36), triploids (2n = 54) and tetraploids (2n = 72) (Bianco et al, 1991;del Prete et al, 1991;Tichy and del Prete, 2001).…”

Section: Introductionmentioning

confidence: 99%