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dc.contributor.author
Acuña, Carlos Alberto
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dc.contributor.author
Blount, Ann R.
dc.contributor.author
Quesenberry, Kenneth H.
dc.contributor.author
Kenworthy, Kevin E.
dc.contributor.author
Hanna, Wayne W.
dc.date.available
2015-11-23T13:37:43Z
dc.date.issued
2011-05
dc.identifier.citation
Acuña, Carlos Alberto; Blount, Ann R.; Quesenberry, Kenneth H.; Kenworthy, Kevin E.; Hanna, Wayne W.; Tetraploid bahiagrass hybrids : breeding technique, genetic variability and proportion of heterotic hybrids; Springer; Euphytica; 179; 2; 5-2011; 227-235
dc.identifier.issn
0014-2336
dc.identifier.uri
http://hdl.handle.net/11336/2880
dc.description.abstract
Manipulating apomixis for fixing tetraploid bahiagrass (Paspalum notatum Flüggé) hybrids exhibiting superior agronomic characteristics would be a valuable tool for the genetic improvement of this species. The objectives were to create a second generation of hybrids by crossing sexual first-generation tetraploid hybrids (FGTH) and unrelated apomictic FGTH or ecotypes, determine the segregation for mode of reproduction, and estimate the resulting genetic variation and heterosis for several agronomic characteristics. The segregation for mode of reproduction was analyzed using mature embryo sac observations. Field measurements and visual ratings were used to evaluate the growth habit, production of inflorescences, cool-season growth and freeze resistance of hybrids. A ratio of 4.6:1 between sexual and apomictic hybrids was observed. Only 3% of the progeny was classified as highly apomictic. The low proportion of highly apomictic progeny restricts the feasibility of this breeding approach. Large genetic variation was observed among hybrids for growth habit, cool-season growth and freeze resistance. The proportion of hybrids exhibiting heterosis was high for plant height, cool-season growth, and freeze resistance. The tetraploid bahiagrass germplasm contains a large diversity for traits of agronomic importance that can be exploited for the genetic improvement of this species.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
APOMIXIS
dc.subject
HETEROSIS
dc.subject
PASPALUM
dc.subject
POLYPLOIDY
dc.subject.classification
Agronomía, reproducción y protección de plantas
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dc.subject.classification
Agricultura, Silvicultura y Pesca
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Tetraploid bahiagrass hybrids : breeding technique, genetic variability and proportion of heterotic hybrids
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
179
dc.journal.number
2
dc.journal.pagination
227-235
dc.journal.pais
Alemania
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dc.description.fil
Fil: Acuña, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina. Universidad Nacional del Nordeste; Argentina
dc.description.fil
Fil: Blount, Ann R.. North Florida Research & Education Center; Estados Unidos
dc.description.fil
Fil: Quesenberry, Kenneth H.. University Of Florida; Estados Unidos
dc.description.fil
Fil: Kenworthy, Kevin E.. University Of Florida; Estados Unidos
dc.description.fil
Fil: Hanna, Wayne W.. University of Georgia; Estados Unidos
dc.journal.title
Euphytica
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10681-010-0276-y
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs10681-010-0276-y
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