Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/530371
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dc.contributor.authorARAÚJO, M. R. A. dept_BR
dc.contributor.authorCOULMAN, B.pt_BR
dc.date.accessioned2011-04-10T11:11:11Zpt_BR
dc.date.available2011-04-10T11:11:11Zpt_BR
dc.date.created2004-03-16pt_BR
dc.date.issued2004pt_BR
dc.identifier.citationCiência Rural, Santa Maria, v. 34, n. 2, p. 505-510, mar./abr. 2004.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/530371pt_BR
dc.descriptionMeadow bromegrass (Bromus riparius Rehm.) is a recently introduced pasture grass in western Canada. Its leafy production and rapid regrowth have made it a major grass species for pasturing beef animals in this region. As relatively little breeding work kas been done on this species, there is little information on its breeding behaviour. The main objective of this study was to estimate total genetic variability, broad-sense heritability, phenotypic and genetic correlations. Forty-four meadow bromegrass clones were evaluated for agronomic characters. Genetic variation for dry matter yield, seed yield, fertility index, harvest index, plant height, plant spread, crude protein, neutral de ter gent fiber and acid de ter gent fiber, was significant. Broad-sense heritability estimates exceeded 50% for all characters. Heritability estimates were at least 3.5 times greater than their standard errors. Phenotypic and genetic correlation between all possible characters were measured There was general agreement in both sign and magnitude between genetic and phenotypic correlations. Correlations between the different characters demonstrated that it is possible to simultaneously improve seed and forage yield. Based on the results, it appears that the development of higher yielding cultivars with higher crude protein, and lower acid and neutral detergent fibers concentration should be possible.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectMelhoramento genéticopt_BR
dc.subjectHerdabilidadept_BR
dc.subjectCorrelação genéticapt_BR
dc.subjectCorrelação fenotípicapt_BR
dc.titleGenetic variation and correlation of agronomic traits in meadow bromegrass (Bromus riparius Rehm) clones.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2013-02-14T11:11:11Zpt_BR
dc.subject.thesagroGramínea Forrageirapt_BR
dc.subject.thesagroVariação Genéticapt_BR
dc.subject.nalthesaurusBromus ripariuspt_BR
riaa.ainfo.id530371pt_BR
riaa.ainfo.lastupdate2013-02-14pt_BR
dc.contributor.institutionMarcelo Renato Alves de Araújo, CNPC; Bruce Coulman, Agriculture and Agri-Food Canada, Saskaton Research Centre.pt_BR
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