| Full text | |
| Author(s): |
de Carvalho Paulino, Jean Fausto
[1]
;
de Almeida, Caleo Panhoca
[1]
;
Song, Qijian
[2]
;
Carbonell, Sergio Augusto Morais
[3]
;
Chiorato, Alisson Fernando
[3]
;
Benchimol-Reis, Luciana Lasry
[1]
Total Authors: 6
|
| Affiliation: | [1] Agron Inst IAC, Nat Ctr Plant Genet, Common Bean Genet Grp, Campinas, SP - Brazil
[2] USDA ARS, Soybean Genom & Improvement Lab, Beltsville, MD - USA
[3] Agron Inst IAC, Grain & Fiber Ctr, Common Bean Breeding Grp, Campinas, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | JOURNAL OF APPLIED GENETICS; v. 62, n. 4 AUG 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Brazil is among the largest producers and consumers of common bean (Phaseolus vulgaris L.) and can be considered a secondary center of diversity for the species. The aim of this study was to estimate the genetic diversity, population structure, and relationships among 288 common bean accessions in an American Diversity Panel (ADP) genotyped with 4,042 high-quality single nucleotide polymorphisms (SNPs). The results showed inter-gene pool hybridization (hybrids) between the two main gene pools (i.e., Mesoamerican and Andean), based on principal component analysis (PCA), discriminant analysis of principal components (DAPC), and STRUCTURE analysis. The genetic diversity parameters showed that the Mesoamerican group has higher values of diversity and allelic richness in comparison with the Andean group. Considering the optimal clusters (K), clustering was performed according to the type of grain (i.e., market group), the institution of origin, the period of release, and agronomic traits. A new subset was selected and named the Mesoamerican Diversity Panel (MDP), with 205 Mesoamerican accessions. Analysis of molecular variance (AMOVA) showed low genetic variance between the two panels (i.e., ADP and MDP) with the highest percentage of the limited variance among accessions in each group. The ADP showed occurrence of high genetic differentiation between populations (i.e., Mesoamerican and Andean) and introgression between gene pools in hybrids based on a set of diagnostic SNPs. The MDP showed better linkage disequilibrium (LD) decay. The availability of genetic variation from inter-gene pool hybridizations presents a potential opportunity for breeders towards the development of superior common bean cultivars. (AU) | |
| FAPESP's process: | 19/19670-2 - Population genomics and GWAS for disease resistance and identification of Andean pool introduction regions in carioca bean access |
| Grantee: | Caléo Panhoca de Almeida |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 18/15526-1 - Genome-wide association study for identifying agronomic candidate loci in common bean |
| Grantee: | Caléo Panhoca de Almeida |
| Support Opportunities: | Scholarships abroad - Research Internship - Master's degree |
| FAPESP's process: | 17/01753-3 - Marker assisted selection and genotyping by sequenecing (GBS) toward angular leaf resistance in common beans |
| Grantee: | Caléo Panhoca de Almeida |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 17/24711-4 - A wide genome association study for resistance to Fusarium oxysporum f. sp. phaseoli and for tegument color in common bean |
| Grantee: | Luciana Lasry Benchimol-Reis |
| Support Opportunities: | Regular Research Grants |