Data/hora: 21/06/2024 10:44:07

Biblioteca(s): | Embrapa Algodão.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 2
Data corrente: | 18/12/2017
Data da última atualização: | 19/12/2017
Autoria: | MENEZES, I. P. P. de; HOFFMANN, L. V.; LIMA, T. H. de; SILVA, A. R. da; LUCENA, V. S.; BARROSO, P. A. V.
Afiliação: | I. P. P. DE MENEZES, IFG - URUTAÍ; LUCIA VIEIRA HOFFMANN, CNPA; T.H. de LIMA, IFG - URUTAÍ; A. R. da SILVA, IFG - URUTAÍ; V.S. LUCENA, UFRPE; PAULO AUGUSTO VIANNA BARROSO, CNPM.
Título: | Genetic diversity of arboreal cotton populations of the Brazilian semiarid: a remnant primary gene pool for cotton cultivars.
Ano de publicação: | 2017
Fonte/Imprenta: | Genetics and Molecular Research, v. 16, n. 3, 2017.
DOI: | 10.4238/gmr16039659
Idioma: | Inglês
Conteúdo: | Mocó cotton belong to the same species as the cultivated species, Gossypium hirsutum, and cultivated forms were mainly landraces but also developed as cultivars, bearing good fiber quality and drought tolerant when cropped as a perennial species. The northeast Brazil crop system based on this cotton type is finished, with a few small area planted in the three main States, where it was previously cultivated (Ceará, Paraíba, and Rio Grande do Norte), but in others, maintenance is accomplished by single dooryard plants. Plants were found in all visited Northeast Brazil municipalities, sometimes in the North of the country, and were collected for ex situ preservation and evaluation. Most of seeds had no fuzz (62.2%) and 94.6% of the genotypes presented spot in flowers. Seventy-one alleles were revealed in 12 loci. The genetic structure of the population evaluated by microsatellite markers shows two main groups, one comprising the Seridó region where landraces were originated and other comprising the state of Ceará, where a specific breeding program was developed. Genotypes collected in North Brazil States as well as those collected in Bahia, Alagoas, and Sergipe grouped with those collected in Ceará. The Mantel correlogram indicates a significant (P < 0.05) correlation between genetic and geographical distances up to 77 km. The ex situ maintenance and agronomical evaluation are the main concerns for mocó, as the use of the agricultural interesting traits, possibly introgressed to other genotypes, is predicted. The in situ preservation is still of interest since there is more diversity there than in the collected plants and some should be continued due to use as medicinal plant.
Palavras-Chave: | Alelo; Genetic diversity.
Thesagro: | Algodão; Fibra; Genótipo; Germoplasma; Gossypium hirsutum.
Thesaurus Nal: | Alleles; Cotton; Genotype; Germplasm.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/169219/1/Genetic-diversity-of-arboreal-cotton....pdf
Registro original: | Embrapa Algodão (CNPA)
Exemplares: | CNPA - (28421-1) - UPC - AP - DD -  -  -  - DIS