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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Morphophysiogenetic characterization of wild poinsettia biotypes with low resistance to glyphosate.
Autores:  AGOSTINETTO, D.
ULGUIM, A. da R.
VARGAS, L.
SILVA, J. D. G. da
LANGARO, A. C.
Data:  2018-03-12
Ano:  2017
Palavras-chave:  Competitive ability
EPSPs inhibitor herbicide
Ight compensation point
Light compensation point
Habilidade competitiva
Herbicida inibidor de EPSPs
Ponto de compensação de luz
Resistência a herbicidas.
Amendoim bravo
Erva daninha
Euphorbia Heterophylla.
Amplified fragment length polymorphism
Herbicide resistance
Weeds.
Resumo:  The objective of this work was to compare wild poinsettia (Euphorbia heterophylla) biotypes as to their morphological characteristics, as well as to determine their genetic similarity in the state of Rio Grande do Sul, Brazil, and to confront the light compensation point of susceptible biotypes and of biotypes with low-resistance level to glyphosate. Besides the morphology analysis, the study included the genetic characterization, by AFLP, of susceptible (GR50 = 58.65 g ha-1 a.e.) biotypes and of biotypes with low resistance (GR50 = 310.36 g ha-1 a.e.) to glyphosate. The competitive ability of the biotypes was inferred according to their light compensation point. The observed morphological characteristics do not allow to differentiate biotypes as to their geographical location, or their resistance level to glyphosate. The genetic analysis identified low genetic diversity among the 15 tested biotypes, with a large amount of subgroups. The biotypes with low resistance formed an isolated group. The susceptible biotypes showed the lowest values of light compensation point and, possibly, they have a greater competitive ability under low-luminosity conditions. The evaluated characteristics do not enable to differentiate genotypes with different levels of glyphosate resistance.

Título em português: Caracterização morfofisiogenética de biótipos de leiteira com baixa resistência ao glifosato.
Tipo:  Artigo de periódico
Idioma:  Inglês
Identificador:  Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n, 11, p. 987-996, novembro 2017.

http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088975
Direitos:  openAccess
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