Genetic variation in root development responses to salt stresses of quinoa
Soil salinity has become a serious environmental abiotic stress limiting crop productivity and quality. The root system is the first organ sensing the changes in salinity. Root development under elevated salinity is therefore an important indicator for saline tolerance in plants. Previous studies fo...
| Autor principal: | |
|---|---|
| Otros Autores: | , |
| Formato: | Artículo |
| Lenguaje: | Inglés |
| Materias: | |
| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2020vannguyen.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| LEADER | 04083nab a22003617a 4500 | ||
|---|---|---|---|
| 001 | 20201218125135.0 | ||
| 003 | AR-BaUFA | ||
| 005 | 20230329125847.0 | ||
| 008 | 201218t2020 xxu|||||o|||| 00| | eng d | ||
| 999 | |c 53972 |d 53972 | ||
| 999 | |d 53972 | ||
| 999 | |d 53972 | ||
| 999 | |d 53972 | ||
| 999 | |d 53972 | ||
| 022 | |a 0931-2250 | ||
| 024 | |a 10.1111/jac.12411 | ||
| 040 | |a AR-BaUFA |c AR-BaUFA | ||
| 100 | 1 | |9 72127 |a Nguyen, Loc Van |u Vietnam National University of Agriculture. Faculty of Agronomy. Department of Food Crop Science. Ha Noi, Vietnam. | |
| 245 | 0 | 0 | |a Genetic variation in root development responses to salt stresses of quinoa |
| 520 | |a Soil salinity has become a serious environmental abiotic stress limiting crop productivity and quality. The root system is the first organ sensing the changes in salinity. Root development under elevated salinity is therefore an important indicator for saline tolerance in plants. Previous studies focused on varietal differences in morphological traits of quinoa under saline stresses; however, variation in root development responses to salinity remains largely unknown. To understand the genetic variation in root development responses to salt stress of quinoa, we conducted a preliminary screening for salinity response at two salinity levels of a diverse set of 52 quinoa genotypes and microsatellite markers were used to link molecular variation to that in root development responses to salt stresses of represented genotypes. The frequency distribution of saline tolerance index showed continuous variation in the quinoa collection. Cluster analysis of salinity responses divided the 52 quinoa genotypes into six major groups. Based on these results, six genotypes representative of groups I to VI including Black quinoa, 2-Want, Atlas, Riobamba, NL-6 and Sayaña, respectively, were selected to evaluate root development under four saline stress levels: 0, 100, 200 and 300 mM NaCl. Contrasts in root development responses to saline stress levels were observed in the six genotypes. At 100 mM NaCl, significant differences were not observed in root length development (RLD) and root surface development (RSAD) of most genotypes except Black quinoa; a significant reduction was observed in this genotype as compared to controls. At 200 mM NaCl, significant reduction was detected in RLD and RSAD in all genotypes showing this as the best concentration to discriminate among genotypes. The strongest inhibition of root development was found for all genotypes at 300 mM NaCl as compared to lower saline levels. Among genotypes, Atlas of group III shows as a saline-tolerant genotype confirming previous reports. Variation in root responses to salinity stresses is also discussed in relation to climate conditions of origins of the genotypes and reveal interesting guidelines for further studies exploring the mechanisms behind this aspect of saline adaptation. | ||
| 650 | |2 Agrovoc |9 26 | ||
| 653 | |a GENETIC DIVERSITY | ||
| 653 | |a QUINOA | ||
| 653 | |a ROOT DEVELOPMENT | ||
| 653 | |a SALINE STRESS | ||
| 700 | 1 | |9 8170 |a Bertero, Héctor Daniel |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. 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 | |a Nguyen, Long Viet |u Vietnam National University of Agriculture. Faculty of Agronomy. Department of Food Crop Science. Ha Noi, Vietnam. |9 72129 | |
| 773 | 0 | |t Journal of agronomy and crop science |w SECS000107 |g Vol.206, no.5 (2020), p.538-547, tbls., grafs., fot. | |
| 856 | |f 2020vannguyen |i en reservorio |q application/pdf |u http://ri.agro.uba.ar/files/intranet/articulo/2020vannguyen.pdf |x ARTI202103 | ||
| 856 | |z LINK AL EDITOR |u https://www.wiley.com/ | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||