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In situ and genetic characterization of Gossypium barbadense populations from the states of Pará and Amapá, Brazil PAB
Almeida,Vanessa Cavalcante de; Hoffmann,Lúcia Vieira; Yokomizo,Gilberto Ken It; Costa,Joaquim Nunes da; Giband,Marc; Barroso,Paulo Augusto Vianna.
The objective of this work was to characterize the populations of Gossypium barbadense in the states of Amapá and Pará, Brazil. In situ characterization was conducted through interviews with the owners of the plants and environmental observations. Leaf or petal tissue as well as seed samples were collected for genetic characterization by single sequence repeats markers and for storage in germplasm banks, respectively. The plants were maintained in dooryards and used mainly for medical purposes. The genetic analysis showed no heterozygous plants at the loci tested (f = 1), indicating that reproduction occurs mainly through selfing. The total genetic diversity was high (He = 0.39); and a high level of differentiation was observed between cotton plants from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cotton; Genetic diversity; Germplasm; SSR markers.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000700011
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PhenoRoots: an inexpensive non-invasive phenotyping system to assess the variability of the root system architecture Scientia Agricola
Martins,Saulo Muniz; Brito,Giovani Greigh de; Gonçalves,Washington da Conceição; Tripode,Bruna Mendes Diniz; Lartaud,Marc; Duarte,João Batista; Morello,Camilo de Lelis; Giband,Marc.
ABSTRACT: The root system architecture (RSA) of plants and its functioning play a fundamental role in a number of plant growth mechanisms including water and nutrient uptake. Optimization of the RSA is important for stable and increased plant productivity under adverse conditions. Despite its great importance, studying the RSA is notoriously laborious because of the difficulty of accessing the rooting system of plants. We developed a root phenotyping platform, PhenoRoots, which allows for the non-invasive study of plant RSA. The system was built using inexpensive material and was designed to provide medium throughput. Substrate or soil-filled rhizotrons are used to grow plantlets, whose roots are directly visible through a glass plate. An experiment...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rhizotron; Root traits; Image analysis; Medium-throughput; Cotton.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000501101
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