Morphological and molecular traits and accumulation of grain protein in rice varieties from Maranhão, Brazil

Morphological and molecular traits and accumulation of grain protein in rice varieties from Maranhão, Brazil

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Rice grain have low protein content but they present glutelin, a protein of higher nutritional quality than proteins of other cereal crops. The objective of this work was to characterize, by morphological and molecular markers, some land races from Maranhão State, Brazil, with high protein content (over 10%) and tolerance to Al3+ and nutritional stress. The 33 varieties under study were fit in five groups based on morphology, and in four groups when RAPD markers were used. These two groupings are not coincident as far as grain protein content are concerned. High grain protein plants were found randomly all over the groups. However, highest proteins contents are associated with plants with the lowest length/width ratio.

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Main Authors: Araújo, Elisangela Sousa de, Souza, Sonia Regina de, Fernandes, Manlio Silvestre
Format: Digital revista
Language:por
Published: Pesquisa Agropecuaria Brasileira 2003
Online Access:https://seer.sct.embrapa.br/index.php/pab/article/view/6701
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spelling rev-pab-br-article-67012014-08-11T19:42:32Z Morphological and molecular traits and accumulation of grain protein in rice varieties from Maranhão, Brazil Características morfológicas e moleculares e acúmulo de proteína em grãos de variedades de arroz do Maranhão Araújo, Elisangela Sousa de Souza, Sonia Regina de Fernandes, Manlio Silvestre Oryza sativa; genetic markers; crude protein Oryza sativa; marcador genético; proteína bruta Rice grain have low protein content but they present glutelin, a protein of higher nutritional quality than proteins of other cereal crops. The objective of this work was to characterize, by morphological and molecular markers, some land races from Maranhão State, Brazil, with high protein content (over 10%) and tolerance to Al3+ and nutritional stress. The 33 varieties under study were fit in five groups based on morphology, and in four groups when RAPD markers were used. These two groupings are not coincident as far as grain protein content are concerned. High grain protein plants were found randomly all over the groups. However, highest proteins contents are associated with plants with the lowest length/width ratio. O grão de arroz apresenta baixos teores de proteína, mas contém glutelina, uma proteína de melhor qualidade para a alimentação humana do que a de outros cereais. O objetivo deste trabalho foi caracterizar, por meio de descritores morfológicos e moleculares (RAPD), algumas variedades tradicionais de arroz do Estado do Maranhão que apresentam altos teores de proteínas nos grãos (mais de 10%) e são tolerantes ao estresse nutricional e ao Al tóxico. As 33 variedades estudadas foram separadas em cinco grupos baseados nas características morfológicas e quatro grupos utilizando marcadores RAPD, que não coincidiram entre si. Teores elevados de proteína no grão estavam presentes aleatoriamente em todos os grupos. No entanto, verificou-se maior acúmulo de proteína em plantas cujas sementes tinham uma menor relação comprimento/largura de grão.– Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira 2003-11-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/6701 Pesquisa Agropecuaria Brasileira; v.38, n.11, nov. 2003; 1281-1288 Pesquisa Agropecuária Brasileira; v.38, n.11, nov. 2003; 1281-1288 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/6701/3758
institution EMBRAPA
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-pab-br
tag revista
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language por
format Digital
author Araújo, Elisangela Sousa de
Souza, Sonia Regina de
Fernandes, Manlio Silvestre
spellingShingle Araújo, Elisangela Sousa de
Souza, Sonia Regina de
Fernandes, Manlio Silvestre
Morphological and molecular traits and accumulation of grain protein in rice varieties from Maranhão, Brazil
author_facet Araújo, Elisangela Sousa de
Souza, Sonia Regina de
Fernandes, Manlio Silvestre
author_sort Araújo, Elisangela Sousa de
title Morphological and molecular traits and accumulation of grain protein in rice varieties from Maranhão, Brazil
title_short Morphological and molecular traits and accumulation of grain protein in rice varieties from Maranhão, Brazil
title_full Morphological and molecular traits and accumulation of grain protein in rice varieties from Maranhão, Brazil
title_fullStr Morphological and molecular traits and accumulation of grain protein in rice varieties from Maranhão, Brazil
title_full_unstemmed Morphological and molecular traits and accumulation of grain protein in rice varieties from Maranhão, Brazil
title_sort morphological and molecular traits and accumulation of grain protein in rice varieties from maranhão, brazil
description Rice grain have low protein content but they present glutelin, a protein of higher nutritional quality than proteins of other cereal crops. The objective of this work was to characterize, by morphological and molecular markers, some land races from Maranhão State, Brazil, with high protein content (over 10%) and tolerance to Al3+ and nutritional stress. The 33 varieties under study were fit in five groups based on morphology, and in four groups when RAPD markers were used. These two groupings are not coincident as far as grain protein content are concerned. High grain protein plants were found randomly all over the groups. However, highest proteins contents are associated with plants with the lowest length/width ratio.
publisher Pesquisa Agropecuaria Brasileira
publishDate 2003
url https://seer.sct.embrapa.br/index.php/pab/article/view/6701
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