Light - mediated self - organization of sunflower stands increases oil yield in the field
| Autor: | Victor O. Sadras, William B. Batista, Jorge J. Casal, Antonio J. Hall, Mónica López Pereira |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine Genotype Light Biology 01 natural sciences Population density Intraspecific competition Crop 03 medical and health sciences Shade avoidance SHADE AVOIDANCE CROP YIELD STAND DENSITY Sunflower Oil Biomass Multidisciplinary Pioneer species Phytochrome Agricultura Crop yield Biological Sciences SELF-ORGANIZATION PHYTOCHROME Sunflower Horticulture 030104 developmental biology CIENCIAS AGRÍCOLAS purl.org/becyt/ford/4.1 [https] Helianthus Agricultura Silvicultura y Pesca purl.org/becyt/ford/4 [https] 010606 plant biology & botany |
| Zdroj: | Proceedings of the National Academy of Sciences of the United States of America Vol.114, no.30 FAUBA Digital (UBA-FAUBA) Universidad de Buenos Aires. Facultad de Agronomía instacron:UBA-FAUBA CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| Popis: | Here, we show a unique crop response to intraspecific interference, whereby neighboring sunflower plants in a row avoid each other by growing toward a more favorable light environment and collectively increase production per unit land area. In high-density stands, a given plant inclined toward one side of the interrow space, and the immediate neighbors inclined in the opposite direction. This process started early as an incipient inclination of pioneer plants, and the arrangement propagated gradually as a “wave” of alternate inclination that persisted until maturity. Measurements and experimental manipulation of light spectral composition indicate that these responses are mediated by changes in the red/far-red ratio of the light, which is perceived by phytochrome. Cellular automata simulations reproduced the patterns of stem inclination in field experiments, supporting the proposition of self-organization of stand structure. Under high crop population densities (10 and 14 plants per m2), as yet unachievable in commercial farms with current hybrids due to lodging and diseases, self-organized crops yielded between 19 and 47% more oil than crops forced to remain erect. Fil: López Pereira, Mónica. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina Fil: Sadras, Victor Oscar. South Australian Research and Development Institute; Australia. University of Adelaide; Australia Fil: Batista, William B.. 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 Fil: Casal, Jorge José. 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 Fil: Hall, Antonio Juan. 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 |
| Databáze: | OpenAIRE |
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