Uma nova espécie para o gênero Gossypium L.

Aranha, C.; Filho, H F Leitao; Gridi-Papp, Imre Lajos

doi:10.1590/s0006-87051969000100023

Cited by 7 publications

(4 citation statements)

References 1 publication

(1 reference statement)

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“…It was named as Gossypium caicoense (Aranha et al 1969), but Valicek (1977) found that this was the same as Gossypium mustelinum collected by Gardner. The population present in the municipality of Caicó is located in a farm named Salgadinho.…”

Section: Description Of In Situ Conditions and Maintenancementioning

confidence: 98%

“…The species is endemic of the semi-arid region of Brazil's northeast, the only place where wild populations have been found. The species was first collected in 1838, by George Gardner, andwas rediscovered in 1965 (Neves et al 1965;Aranha et al 1969). It is wild and did not have any archaeological or current use probably due the ancient introduction of Gossypium barbadense L. from Peru, by the pre-Colombians people.…”

Section: Introductionmentioning

confidence: 99%

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In situ conservation and genetic diversity of three populations of Gossypium mustelinum Miers ex Watt

Barroso

Hoffmann

Freitas

et al. 2009

Genet Resour Crop Evol

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Gossypium mustelinum Miers ex Watt is a native from Northeastern Brazil and belongs to the primary gene pool of the cultivated cotton. The unique places where the species was known to occur were visited to plan ex situ and in situ preservation. Two populations at Caicó became extinct, and only eleven individuals were found. At Jaguarari, although one population became extinct, a new one was localized with approximately 500 adult plants, where a fence avoided cattle feeding. The population from Macururé consisted of 28 plants protected from animals by thorns of Bromelia laciniosa Mart. ex Schult. f. Thirteen SSR primer pairs amplified 40 alleles, among which 30% were exclusive of one of the populations. The genetic differences between populations represented 58.3% of the total genetic variation observed. The high genetic distances are likely to be caused by geographical isolation as well as by the small number of individuals which contribute to new generations, and consequential genetic drift.

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Section: Description Of In Situ Conditions and Maintenancementioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

In situ conservation and genetic diversity of three populations of Gossypium mustelinum Miers ex Watt

Barroso

Hoffmann

Freitas

et al. 2009

Genet Resour Crop Evol

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“…ex Seem. de las Islas Hawaii, G. Darwinii Watt de las islas Galápagos y G. mustelinum Miers ex Watt del nordeste de Brasil (Aranha & al., 1969;Neves & al., 1965;Pickersgill & al., 1975).…”

unclassified

Gossypium Ekmanianum (Malvaceae), Algodón Silvestre De Larepública Dominicana

Krapovickas

Seijo²

2008

Bonplandia

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“…Two populations of this species were sampled. One (W 664) was the original population from Serra da Formiga, Rio Grande do Norte, Brazil, described by Aranha et al (1969). The other, (W 400), was collected by Dr. Geraldo Pinto in the neighborhood of Belo Velo, Rio Paraguacu, Bahia, Brazil, and a sample grown in culture furnished the material in our collection.…”

Section: Gossypium Caicoense Aranha Leitao and Gridi-pappmentioning

confidence: 99%

The Use of Two Polymorphic Systems, Nectary Fringe Hairs and Corky Alleles, as Indicators of Phylogenetic Relationships in New World Cottons

Stephens¹

1974

Biotropica

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An earlier study (Stephens and Phillips 1972) showed that primitive cultivars of Gossypium barbadense L., native to the Americas, could be subdivided into two geographical groups: one west of the Andes which is polymorphic for the corky alleles, cky and ck0, and the other, east of the Andes, which approaches monomorphism for cky, All races of G. hirsutum L., except race maarie-galante, are monomorphic for ck0. In the present study an almost identical grouping is found to hold for the presence or absence of fringe hairs on the floral nectary. The western group of G. barbadense is polymorphic for fringe hairs and the eastern group monomorphic for absence of fringe hair. Virtually all forms of G. hirsutum are monomorphic for presence of fringe hairs. The trivial and inconspicuo,us nature of the fringe hairs makes it difficult to imagine that they have any strong selective value. The corky alleles have no apparent phenotypic expression except in the rare cases where mixed plantings of G. barbadense and G. hirsutum race marie-galante have been established and followed by interspecific hybridization. Both characters, therefore, would seem to provide useful indicators of racial phylogenies. Applying this concept to primitive forms of G. barbadaense now established in Africa, India, and Polynesia, it is found that most of them belong to the eastern group with respect to fringe hairs and corky alleles. This finding is consistent with the commonly held but unsubstantiated opinion that they were introduced over the old Portuguese trade routes from Brazil and the West Indies and not via the old Spanish trade route (Mexico, Guam, Philippines). The origin of modern annual forms of G. barbadense is obscure. The origins of the Sea Island cottons can be traced back only to mid-18th century in the seaboard colonies of North America, and the Egyptian cottons to the early 19th century in the Nile Delta. The Sea Island cottons have the eastern pattern of fringe hairs and corky alleles, contrasting sharply with the Egyptian cottons which have the western pattern. The possible implications of these findings are discussed.

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Uma nova espécie para o gênero Gossypium L.

Cited by 7 publications

References 1 publication

In situ conservation and genetic diversity of three populations of Gossypium mustelinum Miers ex Watt

In situ conservation and genetic diversity of three populations of Gossypium mustelinum Miers ex Watt

Gossypium Ekmanianum (Malvaceae), Algodón Silvestre De Larepública Dominicana

The Use of Two Polymorphic Systems, Nectary Fringe Hairs and Corky Alleles, as Indicators of Phylogenetic Relationships in New World Cottons

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