qualidade física e fisiológica de sementes de braquiárias comercializadas em campo grande-ms physical and physiological quality of seeds of brachiaria grass commercialized in campo grande (brazil)

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ID: 130846
2009
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Abstract
Conduziu-se, o presente trabalho, no Laboratório Didático de Análise de Sementes da Universidade para o Desenvolvimento do Estado e da Região do Pantanal - UNIDERP, com o objetivo de avaliar a qualidade física e fisiológica de sementes de três espécies de braquiárias (Brachiaria brizantha, B. humidicola e B. decumbens), provenientes de seis empresas estabelecidas no comércio de Campo Grande-MS. Os experimentos foram conduzidos em um delineamento inteiramente casualizado, em esquema fatorial 3 X 6, com três espécies e seis procedências, totalizando 18 tratamentos. As variáveis analisadas foram: pureza física, primeira contagem do teste de germinação, germinação, valor cultural e massa de 1.000 sementes. Para análise estatística, os dados, quando necessário, foram transformados e as médias comparadas. Há grande variação na qualidade física e fisiológica das sementes de braquiárias comercializadas em Campo Grande-MS; as sementes da espécie B. humidicola, comercializadas em Campo Grande-MS são, em geral, de baixa qualidade física e fisiológica.
The present work was carried out at the Didactic Laboratory of Analysis of Seeds of the Universidade para o Desenvolvimento do Estado e da Região do Pantanal - UNIDERP, with the aim of evaluating the physical and physiological quality of seeds of three Brachiaria grass species (Brachiaria brizantha, B. humidicola and B. decumbens), proceeding from six companies located at the commercial area of Campo Grande (Brazil). The experiments were carried out in a completely randomized experimental design in factorial scheme, with four replications. The factors were: species (three) and origins (six); totalizing 18 treatments. The pureness, first counting of the germination test, germination, pure germinating seeds and biomass of 1,000 seeds were evaluated. For the statistical analysis, the data were transformed and the means were compared, when necessary. There is high variation in the physical and physiological quality of the seeds of Brachiaria grass commercialized in Campo Grande. The seeds with best physical and physiological quality of B. brizantha specie are from companies 1 and 4. The seeds of B. humidicola, commercialized in Campo Grande presents low physical and physiological quality as a whole. The seeds of B. decumbens with the best physical and physiological quality are from companies 1 and 6.
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Authors ;Valdemir Antônio Laura;Adriana Paula D'Agostini Contreiras Rodrigues;Edison Rubens Arrabal Arias;Katyuce da Silva Chermouth;Tiago Rossi
Journal information and software technology
Year 2009
DOI
10.1590/S1413-70542009000100045
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000100045
Keywords
forage

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