Data/hora: 20/06/2024 16:04:46

Biblioteca(s): | Embrapa Acre; Embrapa Gado de Corte.
Data corrente: | 05/10/2011
Data da última atualização: | 06/07/2021
Autoria: | SOUSA, A. C. B.; GODOY, R.; SFORÇA, D. A.; CAMPOS, T. de; ZUCCHI, M. I.; JANK, L.; SOUZA, A. P. de.
Afiliação: | Adna Cristina Barbosa de Sousa, UNICAMP; RODOLFO GODOY, CPPSE; Danilo Augusto Sforça, UNICAMP; TATIANA DE CAMPOS, CPAF-AC; Maria Imaculada Zucchi, IAC; LIANA JANK, CNPGC; Anete Pereira de Souza, UNICAMP.
Título: | Genetic diversity analysis among pigeonpea genotypes adapted to South American regions based on microsatellite markers.
Ano de publicação: | 2011
Fonte/Imprenta: | Scientia Agricola, Piracicaba, v. 68, n. 4, p. 431-439, July/Aug. 2011.
Idioma: | Inglês
Conteúdo: | The pigeonpea [Cajanus cajan (L) Millspaugh] is one of the most important perennial legume crops utilized in the food, fodder, soil conservation, crop-livestock integrated systems, reclaiming of degraded pastures and symbiotic nitrogen fixation. Microsatellite markers were used to estimate the genetic diversity of 77 pigeonpea genotypes selected from the germplasm collections at Embrapa Cattle-Southeast and, to evaluate their transferability to Phaseolus vulgaris and Vigna unguiculata species. The number of alleles per locus ranged from 2 to12, with an average of 5.1 alleles. The PIC values ranged from 0.11 to 0.80 (average 0.49) and the D values from 0.23 to 0.91 (average 0.58). The averages of observed and expected heterozygosity were 0.25 and 0.47, respectively, showing a deficit in heterozygosity. A model-based Bayesian approach implemented in the software STRUCTURE was used to assign genotypes into clusters. A dendrogram was constructed based on the modified Roger's genetic distances using a neighbor-joining method (NJ). A total of four clusters were assembled by STRUCTURE and a strong tendency of correspondence between the Bayesian clusters in the NJ tree was observed. The genetic distance ranged from 0.09 to 0.62 (average 0.37), showing a low genetic diversity in the pigeonpea genotypes. Transferability of pigeonpea-specific microsatellites revealed a cross-amplification and the presence of polymorphic alleles in P. vulgaris and V. unguiculata.
Palavras-Chave: | Análisis estadístico; Bayesian inference; Diversidade genética; Frijoles; Guandul; Inferência bayesiana; Marcadores genéticos; Microssatélite; Simulación por computadora; Sofware Structure; Variación genética.
Thesagro: | Cajanus cajan; Feijão; Feijão de corda; Guandu; Marcador genético; Marcador molecular; Método estatístico; Modelo de simulação; Phaseolus vulgaris; Polimorfismo genético; Variação genética; Vigna unguiculata.
Thesaurus Nal: | Beans; Computer simulation; Genetic markers; Genetic polymorphism; Genetic variation; Pigeon peas; Statistical analysis.

Categoria do assunto:

F Plantas e Produtos de Origem Vegetal
G Melhoramento Genético

URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/56519/1/23954.pdf
Registro original: | Embrapa Acre (CPAF-AC)

Exemplares:

CPAF-AC - (23954-1) - UPC - AP - PP - SP 321 -  - 2014.00462 - DES
CPAF-AC - (23954-2) - UPC - AP - DD -  -  -  - DIS
CNPGC - (14536-1) - UPC - AP - PP - 630.5 -  -  - DIS