Dataset Information

Mapping QTLs for drought tolerance in a SEA 5 x AND 277 common bean cross with SSRs and SNP markers.

ABSTRACT: 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.

SUBMITTER: Brinez B

PROVIDER: S-EPMC5738610 | biostudies-literature | 2017 Oct-Dec

REPOSITORIES: biostudies-literature

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Mapping QTLs for drought tolerance in a SEA 5 x AND 277 common bean cross with SSRs and SNP markers.

Briñez Boris B Perseguini Juliana Morini Küpper Cardoso JMKC Rosa Juliana Santa JS Bassi Denis D Gonçalves João Guilherme Ribeiro JGR Almeida Caléo C Paulino Jean Fausto de Carvalho JFC Blair Matthew Ward MW Chioratto Alisson Fernando AF Carbonell Sérgio Augusto Morais SAM Valdisser Paula Arielle Mendes Ribeiro PAMR Vianello Rosana Pereira RP Benchimol-Reis Luciana Lasry LL

Genetics and molecular biology 20171023 4

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 gr ...[more]

PMID: 29064511

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Dataset Information

Mapping QTLs for drought tolerance in a SEA 5 x AND 277 common bean cross with SSRs and SNP markers.

Publications

Mapping QTLs for drought tolerance in a SEA 5 x AND 277 common bean cross with SSRs and SNP markers.

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