Data/hora: 01/06/2024 23:52:53

Biblioteca(s): | Embrapa Semiárido.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | B - 1
Data corrente: | 08/03/2017
Data da última atualização: | 08/01/2018
Autoria: | BRUNO, L. R. G. P.; ANTONIO, R. P.; ASSIS, J. G. de A.; MOREIRA, J. N.; LIRA, I. C. de S. A.
Afiliação: | LEILA REGINA GOMES PASSOS BRUNO, Universidade Estadual de Feira de Santana; RAFAELA PRISCILA ANTONIO, CPATSA; JOSÉ GERALDO DE AQUINO ASSIS, Universidade Federal da Bahia; JOSE NILTON MOREIRA, CPATSA; IRLANE CRISTINE DE SOUZA ANDRADE LIRA, UFRPE.
Título: | Buffel grass morphoagronomic characterization from cenchrus germplasm active bank.
Ano de publicação: | 2017
Fonte/Imprenta: | Revista Caatinga, Mossoró, v. 30, n. 2, p. 487-495, abr./jun. 2017.
ISSN: | 1983-2125
Idioma: | Português
Conteúdo: | This study aimed to characterize buffel grass accessions of the Cenchrus Germplasm Active Bank (CGAB) from Embrapa Semi-Arid in a morphoagronomic way, checking the descriptors variability and efficiency in accessions on two consecutive cuts. Twenty-five accessions and five buffel grass cultivars were used in randomized complete block design with three replications. Evaluations were conducted after two consecutive cuts, each evaluation performed 90 days after each cut. Characterization was based on 15 quantitative and qualitative morphoagronomic descriptors. Quantitative descriptors were subjected to individual and joint univariate analysis of variance, followed by the Scott-Knott?s test at 5% significance. Yet qualitative descriptors were submitted to descriptive analysis. Both quantitative and qualitative descriptors were grouped based on the Gower algorithm for divergence analysis. A dendrogram and calculations of the characters relative importance for divergence were established. Genotype and cutting effects were significant for almost all descriptors in the joint analysis. This result indicates a genetic variability between genotypes and, regarding the cut, it indicates mainly differences in growth rate of each genotype in each cutting season. Genotypes were separated into three groups, which showed good genotype variation. The number of tillers per clump, followed by number of inflorescence and color of seeds, were the most relevant characters in genotype separation.
Palavras-Chave: | Banco Ativo de Germoplasma; Diversidade genética; Genetic diversity; Gramíneas forrageiras; Recursos genéticos.
Thesagro: | Capim buffel; Cenchrus ciliaris; Pastagem.
Thesaurus Nal: | Forage grasses; Genetic resources.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/157403/1/Rafaela-2017.pdf
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (56443-1) - UPC - AP - DD -  -  -  - DIS