scholarly journals Deshidratación de quinua (Chenopodium quinoa Willd) asistido por infrarrojo

Infinitum... ◽  
2019 ◽  
Vol 9 (2) ◽  
Author(s):  
Juan Federico Ramos Gómez ◽  
Ángel Oscar Peña Rivera
Keyword(s):  

Objetivo: Determinar el efecto de la temperatura de aire y potencia de rayos infrarrojos sobre el secado de la quinua variedad Hualhuas. Material y Métodos: Para la conducción del experimento se utilizó el diseño completamente aleatorizado con arreglo factorial de 3 x 3, luego de haber preparado las muestras a través del remojado, desaponificación por lavado y enjuagado. Los factores de prueba fueron la temperatura del aire de secado, con tres niveles 40 ºC, 50 ºC y 60 ºC, y la potencia de los rayos infrarrojos 0, 250 y 500 W. Las variables respuesta consideradas fueron el tiempo de secado y la humedad de equilibrio final de los granos de quinua. Resultados: El tiempo de secado al utilizar 40 ºC de temperatura sin radiación infrarroja fue de 6,75 h, 5,0 h con 50 ºC y 3,75 h con 60 ºC. Para 250 W de radiación infrarroja con 40°C el tiempo de secado fue de 3,50 h y 2,50 h con 60 ºC. Para 500 W con 40 ºC 2,0 h y para 60 ºC 1,50 h. Las humedades finales alcanzadas para todos los casos son diferentes. Conclusiones: Al incrementar la temperatura del aire de secado y de la potencia de la radiación de los rayos infrarrojos en forma simultánea, se logra disminuir el tiempo de secado, hasta en un 77,7% comparado con secado solo con aire caliente a 40 ºC y alcanzar humedades de equilibrio tan bajas como 0,05 kg H O/kg m.s. El menor tiempo de secado de 1,50 2 h; fue obtenido utilizado 500 W de potencia con 60 ºC.Palabras clave: Quinua, quinua secado, secado infrarrojo, quinua infrarrojo

2021 ◽  
Vol 19 (1) ◽  
pp. 220-227
Author(s):  
Olga Lucía Torres Vargas ◽  
Mariana Lema González ◽  
Yessica Viviana Galeano Loaiza

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Qi Wu ◽  
Yiming Luo ◽  
Xiaoyong Wu ◽  
Xue Bai ◽  
Xueling Ye ◽  
...  

Abstract Background Night-break (NB) has been proven to repress flowering of short-day plants (SDPs). Long-noncoding RNAs (lncRNAs) play key roles in plant flowering. However, investigation of the relationship between lncRNAs and NB responses is still limited, especially in Chenopodium quinoa, an important short-day coarse cereal. Results In this study, we performed strand-specific RNA-seq of leaf samples collected from quinoa seedlings treated by SD and NB. A total of 4914 high-confidence lncRNAs were identified, out of which 91 lncRNAs showed specific responses to SD and NB. Based on the expression profiles, we identified 17 positive- and 7 negative-flowering lncRNAs. Co-expression network analysis indicated that 1653 mRNAs were the common targets of both types of flowering lncRNAs. By mapping these targets to the known flowering pathways in model plants, we found some pivotal flowering homologs, including 2 florigen encoding genes (FT (FLOWERING LOCUS T) and TSF (TWIN SISTER of FT) homologs), 3 circadian clock related genes (EARLY FLOWERING 3 (ELF3), LATE ELONGATED HYPOCOTYL (LHY) and ELONGATED HYPOCOTYL 5 (HY5) homologs), 2 photoreceptor genes (PHYTOCHROME A (PHYA) and CRYPTOCHROME1 (CRY1) homologs), 1 B-BOX type CONSTANS (CO) homolog and 1 RELATED TO ABI3/VP1 (RAV1) homolog, were specifically affected by NB and competed by the positive and negative-flowering lncRNAs. We speculated that these potential flowering lncRNAs may mediate quinoa NB responses by modifying the expression of the floral homologous genes. Conclusions Together, the findings in this study will deepen our understanding of the roles of lncRNAs in NB responses, and provide valuable information for functional characterization in future.


2021 ◽  
Author(s):  
Julianne A. Kellogg ◽  
John P. Reganold ◽  
Kevin M. Murphy ◽  
Lynne A. Carpenter-Boggs
Keyword(s):  

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1228
Author(s):  
Carla Colque-Little ◽  
Daniel Buchvaldt Amby ◽  
Christian Andreasen

The journey of the Andean crop quinoa (Chenopodium quinoa Willd.) to unfamiliar environments and the combination of higher temperatures, sudden changes in weather, intense precipitation, and reduced water in the soil has increased the risk of observing new and emerging diseases associated with this crop. Several diseases of quinoa have been reported in the last decade. These include Ascochyta caulina, Cercospora cf. chenopodii, Colletotrichum nigrum, C. truncatum, and Pseudomonas syringae. The taxonomy of other diseases remains unclear or is characterized primarily at the genus level. Symptoms, microscopy, and pathogenicity, supported by molecular tools, constitute accurate plant disease diagnostics in the 21st century. Scientists and farmers will benefit from an update on the phytopathological research regarding a crop that has been neglected for many years. This review aims to compile the existing information and make accurate associations between specific symptoms and causal agents of disease. In addition, we place an emphasis on downy mildew and its phenotyping, as it continues to be the most economically important and studied disease affecting quinoa worldwide. The information herein will allow for the appropriate execution of breeding programs and control measures.


LWT ◽  
2021 ◽  
pp. 111612
Author(s):  
Ruihan Huang ◽  
Kai Huang ◽  
Xiao Guan ◽  
Sen Li ◽  
Hongwei Cao ◽  
...  

Author(s):  
M. José Rodríguez Gómez ◽  
Javier Matías Prieto ◽  
Verónica Cruz Sobrado ◽  
Patricia Calvo Magro

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