Genetic structure in cultivated quinoa [Chenopodium quinoa Willd.], a reflection of landscape structure in Northwest Argentina
Quinoa [Chenopodium quinoa Willd.], one of the main crops domesticated in the Andean highlands 1,000 of years ago, played an important role as a protein source. 35 germplasm accessions collected along the Northwest Argentina [NWA] region were studied using 22 microsatellite [SSR] markers. Results sh...
| Otros Autores: | , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/download/articulo/2012CostaTartara.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 245 | 1 | 0 | |a Genetic structure in cultivated quinoa [Chenopodium quinoa Willd.], a reflection of landscape structure in Northwest Argentina |
| 520 | |a Quinoa [Chenopodium quinoa Willd.], one of the main crops domesticated in the Andean highlands 1,000 of years ago, played an important role as a protein source. 35 germplasm accessions collected along the Northwest Argentina [NWA] region were studied using 22 microsatellite [SSR] markers. Results showed a great level of genetic diversity, differing from previous reports about the geographical distribution of quinoa variability. All SSR loci analysed were highly polymorphic detecting a total of 354 alleles among all populations, with an average of 16 alleles per locus. Cluster analyses grouped the accessions into four main clusters at the average genetic distance level [0.80], each of which represented a different environment of the NWA region: Puna [UHe = 0.42, ±0.07 SE], Dry Valleys [UHe = 0.27, ±0.05 SE], Eastern Humid Valleys [UHe = 0.16, ±0.04 SE] and a transition area with high altitudes between the last two environments [UHe = 0.25, ±0.03 SE]. An eastward decreasing genetic diversity gradient was found. AMOVA analyses showed a strong genetic structure: a high population subdivision relative to the grouping by region [Fsr = 0.47] together with a high genetic differentiation among populations [Fst = 0.58] and a heterozygous defect [Fis = 0.63] in each of them. The variability structure, a reflection of the structure of the NWA landscapes, is discussed in connection with environmental variables. | ||
| 653 | 0 | |a CLUSTER ANALYSIS | |
| 653 | 0 | |a GENETIC DIVERSITY | |
| 653 | 0 | |a GERMPLASM | |
| 653 | 0 | |a MICROSATELLITES | |
| 653 | 0 | |a NORTHWEST ARGENTINA | |
| 653 | 0 | |a QUINOA | |
| 653 | 0 | |a ALLELE | |
| 653 | 0 | |a CULTIVATION | |
| 653 | 0 | |a DICOTYLEDON | |
| 653 | 0 | |a GENETIC MARKER | |
| 653 | 0 | |a GENETIC STRUCTURE | |
| 653 | 0 | |a GEOGRAPHICAL DISTRIBUTION | |
| 653 | 0 | |a LANDSCAPE STRUCTURE | |
| 653 | 0 | |a PROTEIN | |
| 653 | 0 | |a UPLAND REGION | |
| 653 | 0 | |a ANDES | |
| 653 | 0 | |a ARGENTINA | |
| 653 | 0 | |a CHENOPODIUM QUINOA | |
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| 700 | 1 | |a Manifesto, M. M. |9 69916 | |
| 700 | 1 | |9 6301 |a Bramardi, Sergio Jorge | |
| 700 | 1 | |9 8170 |a Bertero, Héctor Daniel | |
| 773 | |t Conservation Genetics |g Vol.13, no.4 (2012), p.1027-1038 | ||
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| 900 | |a ^tGenetic structure in cultivated quinoa [Chenopodium quinoa Willd.], a reflection of landscape structure in Northwest Argentina | ||
| 900 | |a ^aCosta Tártara^bS.M. | ||
| 900 | |a ^aManifesto^bM.M. | ||
| 900 | |a ^aBramardi^bS.J. | ||
| 900 | |a ^aBertero^bH.D. | ||
| 900 | |a ^aCosta Tártara^bS. M. | ||
| 900 | |a ^aManifesto^bM. M. | ||
| 900 | |a ^aBramardi^bS. J. | ||
| 900 | |a ^aBertero^bH. D. | ||
| 900 | |a ^aCosta Tártara^bS.M.^tInstituto de Recursos Biológicos CIRN-INTA, N Repetto y Los Reseros s/n, 1686 Hurlingham, Buenos Aires, Argentina | ||
| 900 | |a ^aManifesto^bM.M.^tConsejo Nacional de Investigaciones CientÃficas y Técnicas, Av. Rivadavia 1917, 1033 Buenos Aires, Argentina | ||
| 900 | |a ^aBramardi^bS.J.^tFacultad de Ciencias Agrarias, Universidad Nacional del Comahue, Ruta 151, Km 12, 8303 Cinco Saltos, RÃo Negro, Argentina | ||
| 900 | |a ^aBertero^bH.D.^tFacultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, Av. 60 s/n La Plata, 1900 Buenos Aires, Argentina | ||
| 900 | |a ^aOscar^bOscar^tCátedra de Producción Vegetal, Facultad de AgronomÃa, Universidad de Buenos Aires, Av. San MartÃn 4453, 1417 Buenos Aires, Argentina | ||
| 900 | |a ^tConservation Genetics^cConserv. Genet. | ||
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| 900 | |a Vol. 13, no. 4 | ||
| 900 | |a 1038 | ||
| 900 | |a CLUSTER ANALYSIS | ||
| 900 | |a GENETIC DIVERSITY | ||
| 900 | |a GERMPLASM | ||
| 900 | |a MICROSATELLITES | ||
| 900 | |a NORTHWEST ARGENTINA | ||
| 900 | |a QUINOA | ||
| 900 | |a ALLELE | ||
| 900 | |a CULTIVATION | ||
| 900 | |a DICOTYLEDON | ||
| 900 | |a GENETIC MARKER | ||
| 900 | |a GENETIC STRUCTURE | ||
| 900 | |a GEOGRAPHICAL DISTRIBUTION | ||
| 900 | |a LANDSCAPE STRUCTURE | ||
| 900 | |a PROTEIN | ||
| 900 | |a UPLAND REGION | ||
| 900 | |a ANDES | ||
| 900 | |a ARGENTINA | ||
| 900 | |a CHENOPODIUM QUINOA | ||
| 900 | |a Quinoa [Chenopodium quinoa Willd.], one of the main crops domesticated in the Andean highlands 1,000 of years ago, played an important role as a protein source. 35 germplasm accessions collected along the Northwest Argentina [NWA] region were studied using 22 microsatellite [SSR] markers. Results showed a great level of genetic diversity, differing from previous reports about the geographical distribution of quinoa variability. All SSR loci analysed were highly polymorphic detecting a total of 354 alleles among all populations, with an average of 16 alleles per locus. Cluster analyses grouped the accessions into four main clusters at the average genetic distance level [0.80], each of which represented a different environment of the NWA region: Puna [UHe = 0.42, ±0.07 SE], Dry Valleys [UHe = 0.27, ±0.05 SE], Eastern Humid Valleys [UHe = 0.16, ±0.04 SE] and a transition area with high altitudes between the last two environments [UHe = 0.25, ±0.03 SE]. An eastward decreasing genetic diversity gradient was found. AMOVA analyses showed a strong genetic structure: a high population subdivision relative to the grouping by region [Fsr = 0.47] together with a high genetic differentiation among populations [Fst = 0.58] and a heterozygous defect [Fis = 0.63] in each of them. The variability structure, a reflection of the structure of the NWA landscapes, is discussed in connection with environmental variables. | ||
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