| Texto completo | |
| Autor(es): Mostrar menos - |
Brinez, Boris
;
Kupper Cardoso Perseguini, Juliana Morini
;
Rosa, Juliana Santa
;
Bassi, Denis
;
Ribeiro Goncalves, Joao Guilherme
;
Almeida, Caleo
;
de Carvalho Paulino, Jean Fausto
;
Blair, Matthew Ward
;
Chioratto, Alisson Fernando
;
Morais Carbonell, Sergio Augusto
;
Mendes Ribeiro Valdisser, Paula Arielle
;
Vianello, Rosana Pereira
;
Benchimol-Reis, Luciana Lasry
Número total de Autores: 13
|
| Tipo de documento: | Artigo Científico |
| Fonte: | GENETICS AND MOLECULAR BIOLOGY; v. 40, n. 4, p. 11-pg., 2017-10-01. |
| Resumo | |
The common bean is characterized by high sensitivity to drought and low productivity. Breeding for drought resistance in this species involves genes of different genetic groups. In this work, we used a SEA 5 x AND 277 cross to map quantitative trait loci associated with drought tolerance in order to assess the factors that determine the magnitude of drought response in common beans. A total of 438 polymorphic markers were used to genotype the F8 mapping population. Phenotyping was done in two greenhouses, one used to simulate drought and the other to simulate irrigated conditions. Fourteen traits associated with drought tolerance were measured to identify the quantitative trait loci (QTLs). The map was constructed with 331 markers that covered all 11 chromosomes and had a total length of 1515 cM. Twenty-two QTLs were discovered for chlorophyll, leaf and stem fresh biomass, leaf biomass dry weight, leaf temperature, number of pods per plant, number of seeds per plant, seed weight, days to flowering, dry pod weight and total yield under well-watered and drought (stress) conditions. All the QTLs detected under drought conditions showed positive effects of the SEA 5 allele. This study provides a better understanding of the genetic inheritance of drought tolerance in common bean. (AU) | |
| Processo FAPESP: | 09/50275-0 - Desenvolvimento da plataforma dart e mapeamento de locos associados a tolerancia a seca |
| Beneficiário: | Boris Brinez Rodriguez |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 10/51186-9 - Mapeamento de locos associados a tolerancia ao estresse hidrico com a plataforma dart e marcadores microssatelites. |
| Beneficiário: | Luciana Lasry Benchimol-Reis |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |