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dc.contributor.author
Ibañez, Maria Silvina
dc.contributor.author
Mercado, Maria Ines
dc.contributor.author
Coll Araoz, Maria Victoria
dc.contributor.author
Zannier, Martin
dc.contributor.author
Grau, Alfredo
dc.contributor.author
Ponessa, Graciela Inés
dc.date.available
2019-05-20T14:43:29Z
dc.date.issued
2017-03
dc.identifier.citation
Ibañez, Maria Silvina; Mercado, Maria Ines; Coll Araoz, Maria Victoria; Zannier, Martin; Grau, Alfredo; et al.; Flower structure and developmental stages of the capitulum of Smallanthus sonchifolius (Asteraceae): reproductive implications; Springer Tokyo; Journal of Plant Research; 130; 2; 3-2017; 327-337
dc.identifier.issn
0918-9440
dc.identifier.uri
http://hdl.handle.net/11336/76707
dc.description.abstract
Yacon (Smallanthus sonchifolius, Asteraceae) is an ancient andean crop that has numerous dietary and medicinal properties. Morphological and anatomical features and developmental changes of the capitulum were studied. A ray floret is a pistillate, female flower, while a disc floret is a staminate male flower, and the former opens before the latter, being pseudanthium protogynous. The capitulum presents interesting attributes for pollinators such as flower structure, nectaries and pollenkitt. Gynoecial nectaries were found on undeveloped ovary in the disc floret, but not in the ray floret. Glandular trichomes were observed on the abaxial epidermis of corolla in the ray floret, but not in the disc floret. Capitulum development was divided into eight stages. Stigma receptivity varied with these stages. Pollen viability was low (15%). In accordance with low viability, pollen grains exhibit diverse sizes and shapes, reduction in length of spines, and abnormal protoplasm. Examination of ovary development in the ray floret showed that a mature ovule was formed, but fertilization did not occur. In advanced developmental stages, the capitulum showed proliferation of the endothelium, degeneration of the embryo sac, and all harvested cypselae had aborted seeds. Problems found in pollen viability and aborted cypselae could be the result of a history of vegetative propagation in the domestication process.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer Tokyo
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Anatomy
dc.subject
Capitulum
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Morphology
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Reproductive Organs
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Smallanthus Sonchifolius
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Yacon
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Otras Ciencias Biológicas
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Flower structure and developmental stages of the capitulum of Smallanthus sonchifolius (Asteraceae): reproductive implications
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-05-14T21:37:36Z
dc.journal.volume
130
dc.journal.number
2
dc.journal.pagination
327-337
dc.journal.pais
Japón
dc.journal.ciudad
Tokyo
dc.description.fil
Fil: Ibañez, Maria Silvina. Universidad Nacional de Tucumán. Instituto de Ecología Regional. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Ecología Regional; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina
dc.description.fil
Fil: Mercado, Maria Ines. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
dc.description.fil
Fil: Coll Araoz, Maria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina
dc.description.fil
Fil: Zannier, Martin. Fundación Miguel Lillo; Argentina. Universidad Nacional de Tucumán. Instituto de Ecología Regional. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Ecología Regional; Argentina
dc.description.fil
Fil: Grau, Alfredo. Universidad Nacional de Tucumán; Argentina. Universidad Nacional de Tucumán. Instituto de Ecología Regional. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Ecología Regional; Argentina
dc.description.fil
Fil: Ponessa, Graciela Inés. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina
dc.journal.title
Journal of Plant Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/ 10.1007/s10265-017-0904-x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10265-017-0904-x
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