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dc.contributor.author
Dominguez, Deolindo Luis Esteban
dc.contributor.author
Remy, Martina M.
dc.contributor.author
Kozub, Perla Carolina
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Carvajal, Sofia
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Cavagnaro, Juan Bruno
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Cavagnaro, Pablo Federico
dc.date.available
2024-06-24T15:15:56Z
dc.date.issued
2024-06
dc.identifier.citation
Dominguez, Deolindo Luis Esteban; Remy, Martina M.; Kozub, Perla Carolina; Carvajal, Sofia; Cavagnaro, Juan Bruno; et al.; Variation in pollen viability among Leptochloa crinita accessions: implications for directed crosses; Taylor & Francis; Botany Letters; 6-2024; 1-12
dc.identifier.issn
2381-8107
dc.identifier.uri
http://hdl.handle.net/11336/238349
dc.description.abstract
Leptochloa crinita, a native forage grass from American arid regions, is widely used for range grazing and revegetation of degraded lands. Despite its importance, progress in breeding and genetic research has been hindered by the difficulty of achieving sexual crosses between L. crinita plants. We hypothesize that factors associated with pollen quality can influence the effectiveness of directed sexual crosses in this species. Thus, the present study investigated pollen viability and longevity in a genetically diverse collection of 21 L. crinita accessions. Pollen viability was estimated at 0, 30, 60, and 180 minutes after anthers dehiscence (MAAD) by two methods: 1) acetocarmine staining; and 2) in vitro germination of pollen grains in culture media containing 0.4-1.0 M sucrose. The staining method overestimated pollen viability, whereas the in vitro germination assay provided accurate and reliable estimates, being 0.6 M the optimal sucrose concentration in the medium, in terms of germination rates and discriminatory power among the accessions. In all the accessions, pollen viability was highest at 0-30 MAAD, and decayed very rapidly, to reach levels below 5% at 180 MAAD. Significant (p<0.05) and broad variation for pollen viability was found among the accessions, with mean values in the range of 49-89% (0 MAAD), 32-76% (30 MAAD), 24-45% (60 MAAD), and 0.6-4.9% (180 MAAD), allowing the identification of six accessions exhibiting the greatest pollen viabilities. These results suggest 0-30 MAAD and using the selected (best) pollen donors, on emasculated female parentals, as the optimal conditions for attempting sexual crosses in L. crinita.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
LEPTOCHLOA CRINITA
dc.subject
SEXUAL REPRODUCTION
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POLLEN VIABILITY
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POLLEN GERMINATION
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Agronomía, reproducción y protección de plantas
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Agricultura, Silvicultura y Pesca
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CIENCIAS AGRÍCOLAS
dc.title
Variation in pollen viability among Leptochloa crinita accessions: implications for directed crosses
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-06-24T13:12:12Z
dc.identifier.eissn
2381-8115
dc.journal.pagination
1-12
dc.journal.pais
Reino Unido
dc.description.fil
Fil: Dominguez, Deolindo Luis Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina
dc.description.fil
Fil: Remy, Martina M.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; Argentina
dc.description.fil
Fil: Kozub, Perla Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina
dc.description.fil
Fil: Carvajal, Sofia. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Mendoza-San Juan. Estación Experimental Agropecuaria Mendoza. Agencia de Extensión Rural Lujan de Cuyo.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Cavagnaro, Juan Bruno. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina
dc.description.fil
Fil: Cavagnaro, Pablo Federico. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Mendoza-San Juan. Estación Experimental Agropecuaria Mendoza. Agencia de Extensión Rural Lujan de Cuyo.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Botany Letters
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/23818107.2024.2365844
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/23818107.2024.2365844
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