Registro:
Título en inglés:
Photothermal quotient describes the combined effects of heat and shade stresses on Canola seed productivity
Autor/es:
Rivelli, Gonzalo Martín; Gómez, Nora Valentina; Mantese, Anita Ida; Miralles, Daniel Julio; Abeledo, Leonor Gabriela; Rondanini, Déborah Paola
Filiación:
Rivelli, Gonzalo Martín. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Rivelli, Gonzalo Martín. CONICET - Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Gómez, Nora Valentina. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
Mantese, Anita Ida. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
Miralles, Daniel Julio. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Miralles, Daniel Julio. CONICET - Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Abeledo, Leonor Gabriela. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Abeledo, Leonor Gabriela. CONICET - Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Rondanini, Déborah Paola. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Rondanini, Déborah Paola. CONICET - Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Temas:
RAPESEED; BRASSICA NAPUS; SOLAR RADIATION; HIGH TEMPERATURE; FLOWERING; PHOTOTHERMAL QUOTIENT; GRAIN YIELD; SEED WEIGHT; SEED OIL; FRUITING EFFICIENCY
Resumen:
There is evidence of the negative effects on canola seed yield caused by shading (SH) and high temperature stress (HT) separately, but the combined effect of both stresses has not been studied. This work aimed to (i) evaluate the effects of SH and HT stresses, alone and combined, on floral development, seed yield and quality, (ii) quantify the resulting effect (additive, synergistic, antagonistic) of combined stresses, and (iii) examine the utility of the photothermal quotient (PTQ, solar radiation/temperature ratio) to predict seed yield in stressed canola crops. Two field experiments were performed in Buenos Aires (Argentina) applying HT daytime temperature stress (25–30 ◦C from 1000 to 1500 h), SH (−80% irradiance), and SH + HT combined stresses, with C unstressed (20 ◦C and 100% irradiance) crops. Long and short duration SH and HT strongly affected floral development (fewer flowers and pods, with smaller ovules) and seed yield (reduction from −40 to −90% respect to C). Combined SH + HT exhibited detrimental synergistic effects on seed yield and oil concentration for long duration stresses, whereas antagonistic effects were mainly observed for short stresses. We conclude that the PTQ (cumulative from 100 to 500 ◦Cd after flowering) summarizes adequately the detrimental effects of combined post-flowering abiotic stresses on canola seed productivity
Citación:
---------- APA ----------
Rivelli, G. M.; Gómez, N. V.; Mantese, A. I.; Miralles, D. J.; Abeledo, L. G. & Rondanini, D. P. (2023).Photothermal quotient describes the combined effects of heat and shade stresses on Canola seed productivity.Seeds,2, (1),p.149-164
10.3390/seeds2010012
---------- CHICAGO ----------
Rivelli, Gonzalo Martín, Gómez, Nora Valentina, Mantese, Anita Ida, Miralles, Daniel Julio, Abeledo, Leonor Gabriela, Rondanini, Déborah Paola.2023. "Photothermal quotient describes the combined effects of heat and shade stresses on Canola seed productivity".Seeds 2, no.1:149-164.
Recuperado de http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2023rivelli