Regulation of seed dormancy by the maternal environment is instrumental for maximizing plant fitness in Polygonum aviculare

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Emergence at an appropriate time and place is critical for maximizing plant fitness and hence sophisticated mechanisms such as seed dormancy have evolved. Although maternal influence on different aspects of dormancy behavior has been identified, its impact under field conditions and its relation to...

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Detalles Bibliográficos
Autor principal: Fernández Farnocchia, Rocío B.
Otros Autores: Benech Arnold, Roberto Luis, Batlla, Diego
Formato: Artículo
Lenguaje:Inglés
Materias:
EMERGENCE PATTERNS
GERMINATION
MATERNAL EFFECT
MATERNAL PHOTOPERIOD
MATERNAL SOWING DATE
PLANT FITNESS
PRIMARY DORMANCY
SECONDARY DORMANCY
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2019fernandezfarnocchia.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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100 1 |9 69738  |a Fernández Farnocchia, Rocío B.  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cultivos Industriales. Buenos Aires, Argentina.  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. 
245 0 0 |a Regulation of seed dormancy by the maternal environment is instrumental for maximizing plant fitness in Polygonum aviculare 
520 |a Emergence at an appropriate time and place is critical for maximizing plant fitness and hence sophisticated mechanisms such as seed dormancy have evolved. Although maternal influence on different aspects of dormancy behavior has been identified, its impact under field conditions and its relation to plant fitness has not been fully determined. This study examined maternal effects in Polygonum aviculare on release of seed primary dormancy, responses to alternating temperatures, induction into secondary dormancy, and field emergence patterns as influenced by changes in the sowing date and photoperiod experienced by the mother plant. Maternal effects were quantified using population threshold models that allowed us to simulate and interpret the experimental results. We found that regulation of dormancy in P. aviculare seeds by the maternal environment is instrumental for maximizing plant fitness in the field. This regulation operates by changing the dormancy level of seeds dispersed at different times (as a consequence of differences in the sowing dates of mother plants) in order to synchronize most emergence to the seasonal period that ultimately guarantees the highest reproductive output of the new generation. Our results also showed that maternal photoperiod, which represents a clear seasonal cue, is involved in this regulation. 
653 |a EMERGENCE PATTERNS 
653 |a GERMINATION 
653 |a MATERNAL EFFECT 
653 |a MATERNAL PHOTOPERIOD 
653 |a MATERNAL SOWING DATE 
653 |a PLANT FITNESS 
653 |a PRIMARY DORMANCY 
653 |a SECONDARY DORMANCY 
700 1 |9 663  |a Benech Arnold, Roberto Luis  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cultivos Industriales. Buenos Aires, Argentina.  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. 
700 1 |9 11303  |a Batlla, Diego  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura. Buenos Aires, Argentina.  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. 
773 0 |t Journal of experimental botany  |w (AR-BaUFA)SECS000114  |g vol.70, no.18 (2019), p.4793–4805, grafs. 
856 |f 2019fernandezfarnocchia  |i En Reservorio:  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2019fernandezfarnocchia.pdf  |x ARTI201911 
856 |u https://academic.oup.com/jxb  |z LINK AL EDITOR 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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