Data/hora: 01/06/2024 02:05:17

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 30/01/2018
Data da última atualização: | 30/01/2018
Autoria: | SILVA, L. C.; BATISTA, R. O.; ANJOS, R. S. R.; SOUZA, M. H.; CARNEIRO, P. C. S.; SOUZA, T. L. P. O.; BARROS, E. G.; CARNEIRO, J. E. S.
Afiliação: | THIAGO LIVIO PESSOA OLIV DE SOUZA, CNPAF.
Título: | Morphoagronomic characterization and genetic diversity of a common bean RIL mapping population derived from the cross Rudá x AND 277.
Ano de publicação: | 2016
Fonte/Imprenta: | Genetics and Molecular Research, v. 15, n. 3, gmr15038112, Jul. 2016.
ISSN: | 1676-5680
DOI: | 10.4238/gmr.15038112
Idioma: | Inglês
Conteúdo: | Recombinant inbred lines (RILs) are a valuable resource for building genetic linkage maps. The presence of genetic variability in the RILs is essential for detecting associations between molecular markers and loci controlling agronomic traits of interest. The main goal of this study was to quantify the genetic diversity of a common bean RIL population derived from a cross between Ruda (Mesoamerican gene pool) and AND 277 (Andean gene pool). This population was developed by the single seed descent method from 500 F-2 plants until the F-10 generation. Seven quantitative traits were evaluated in the field in 393 RILs, the parental lines, and five control cultivars. The plants were grown using a randomized block design with additional controls and three replicates. Significant differences were observed among the RILs for all evaluated traits (P < 0.01). A comparison of the RILs and parental lines showed significant differences (P < 0.01) for the number of days to flowering (DFL) and to harvest (DH), productivity (PROD) and mass of 100 beans (M100); however, there were no significant differences for plant architecture, degree of seed flatness, or seed shape. These results indicate the occurrence of additive x additive epistatic interactions for DFL, DH, PROD, and M100. The 393 RILs were shown to fall into 10 clusters using Tocher's method. This RIL population clearly contained genetic variability for the evaluated traits, and this variability will be crucial for future studies involving genetic mapping and quantitative trait locus identification and analysis.
Palavras-Chave: | Epistatic interactions; Mapping population; Phenotypic characterization; Recombinant inbred lines.
Thesagro: | Feijão; Melhoramento genético vegetal; Phaseolus vulgaris; Segregação.
Thesaurus Nal: | Beans; Genetic variation; Transgressive segregation.
Categoria do assunto: | G Melhoramento Genético
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/171843/1/CNPAF-2016-gmrsilva.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (35150-1) - UPC - AP - DD - 2016 -  - 2016 - DIS