Citas bibligráficas
Romero, M., (2022). El selenio en la producción de Quinua (Chenopodium quinoa Willd) bajo condiciones de estrés hídrico [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/5429
Romero, M., El selenio en la producción de Quinua (Chenopodium quinoa Willd) bajo condiciones de estrés hídrico []. PE: Universidad Nacional Agraria La Molina; 2022. https://hdl.handle.net/20.500.12996/5429
@misc{renati/1115870,
title = "El selenio en la producción de Quinua (Chenopodium quinoa Willd) bajo condiciones de estrés hídrico",
author = "Romero Poma, Maria Belen",
publisher = "Universidad Nacional Agraria La Molina",
year = "2022"
}
Selenium (Se) is an essential micronutrient for humans and animals. Selenium is a complementary element in higher plants and generates great benefits by acting as a promoter of the defense mechanisms that allow plants to protect themselves from water stress effects. This research assessed the response of Se soil application on quinoa crop production to water stress and the impacts that Se generates on its physiology, morphology, and production. Selenium rates applied were 0, 0.25, 0.50, 1.00 and 2.00 mg kg-1, under irrigated and water stress conditions. Gas exchange and SPAD chlorophyll index were measured; in addition plant height, grain and total dry biomass production, Se concentration and N, P, and K accumulation by grains were determined. The results showed that Se concentration under two soil water conditions is correlated positively with increasing Se rates. Water stress decreased grain dry biomass and transpiration rate (E) and increased the SPAD index, while lower Se rates (0.25 and 0.50 mg kg-1 ) mitigated the effect of this condition. Selenium rate at 0.50 mg kg-1 increased instantaneous photosynthetic rate (A), instantaneous carboxylation efficiency (EiC), and water use efficiency (WUE) in water stress treatments; likewise, Se rate of 0.25 mg kg-1 increased N, P, and K accumulation by grains. In conclusion, Se application has the potential to alleviate the impact of water stress on the quinoa crop by improving its gas exchange and macronutrient accumulation by grains at low rates.
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