Show simple item record Ceccato, Diana V. Bertero, Hector Daniel Batlla, Diego 2019-02-25T18:39:31Z 2011-06
dc.identifier.citation Ceccato, Diana V.; Bertero, Hector Daniel; Batlla, Diego; Environmental control of dormancy in quinoa (Chenopodium quinoa) seeds: Two potential genetic resources for pre-harvest sprouting tolerance; Cambridge University Press; Seed Science Research; 21; 2; 6-2011; 133-141
dc.identifier.issn 0960-2585
dc.description.abstract Pre-harvest sprouting (PHS) is a serious risk when adapting quinoa (Chenopodium quinoa) seed production to different temperate environments. Two quinoa accessions, 2-Want and Chadmo were evaluated under field conditions in the Argentinean pampas over 2 years on five different sowing dates, to explore a range of climate conditions under which seed filling is manageable in this region. Both accessions exhibited dormancy during seed development and maturation under the conditions examined; however, dormancy expression was restricted to low temperatures in 2-Want, while seeds of Chadmo, originating from the humid island of Chiloe, southern Chile, expressed a high level of dormancy at all examined temperatures. Dormancy release was observed as a reduction in the lowest temperature permissible for seed germination, which broadened the optimal germination temperature window. Higher storage temperature increased the rate of dormancy release. The environment during seed development on the mother plant affected the levels and patterns of seed dormancy, with higher temperatures and longer photoperiods promoting dormancy. As dormancy was released before the next production period, the levels of dormancy observed in the accession would allow timely planting and uniform germination, while dormancy during seed maturation ensures the prevention of PHS. Chadmo showed deeper dormancy levels in all situations, compared with 2-Want, therefore greater PHS tolerance under various conditions in the pampas region can be expected for Chadmo, which makes this accession a better candidate to be included in adaptive breeding programmes for quinoa.
dc.format application/pdf
dc.language.iso eng
dc.publisher Cambridge University Press
dc.rights info:eu-repo/semantics/restrictedAccess
dc.subject DORMANCY
dc.subject PHOTOPERIOD
dc.subject TEMPERATURE
dc.subject.classification Agricultura
dc.subject.classification Agricultura, Silvicultura y Pesca
dc.subject.classification CIENCIAS AGRÍCOLAS
dc.title Environmental control of dormancy in quinoa (Chenopodium quinoa) seeds: Two potential genetic resources for pre-harvest sprouting tolerance
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion 2019-01-29T18:18:50Z
dc.journal.volume 21
dc.journal.number 2
dc.journal.pagination 133-141
dc.journal.pais Reino Unido
dc.journal.ciudad Cambridge
dc.description.fil Fil: Ceccato, Diana V.. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires; Argentina
dc.description.fil Fil: Bertero, Hector Daniel. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil Fil: Batlla, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
dc.journal.title Seed Science Research
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/
dc.conicet.fuente unificacion

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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)