Potato germplasm developed under tropical conditions may contain diversity for breeding, but the Brazilian materials remain poorly characterized. We evaluated 449 tetraploid potato clones, most from Brazilian breeding programs, with 12,595 SNPs. Dosage-aware analyses and STRUCTURE supported four breeding-related clusters. Genetic differentiation between Brazilian and foreign populations was low (ΦST = 0.04), indicating extensive use of external germplasm in Brazilian breeding. In contrast, differentiation among the genetic clusters was moderate (ΦST = 0.22), suggesting preferable restricted parental use in their pipelines. Heterozygosity and inbreeding estimates depended strongly on genotype encoding. Tajima’s D was positive (4.46), and suggested selection favoring increased heterozygosity. Three genome scans identified 92 shared candidate outlier SNPs within broad LD-based windows. The functional annotations generated hypotheses related to stress responses for further studies to be functionally validated. The results provide insights at a panel-level baseline for germplasm management and candidate prioritization in Brazilian potato breeding.
The observed molecular differentiation demonstrated the presence of genetically diverse material within the studied germplasm and may be useful for germplasm characterization and selection of diverse parents to broaden the genetic base of wheat breeding programmes.
Soyal Kumar, L. K. Gangwar, Shiv Kumar Singh et al.· Genetics and Molecular Resea...· 0 citations
Abstract Genomic selection (GS) is a powerful tool for accelerating genetic gain in potato (Solanum tuberosum L.) breeding, particularly for complex traits. In this study, three practical aspects of GS implementation in a potato breeding program were examined. First, the predictive ability of GS models was evaluated fo...
R. Dhakal, M. A. Peixoto, Leo Hoffmann et al.· The Plant Genome· 0 citations
Italian sweet pepper landraces represent an important reservoir of genetic diversity, although their practical exploitation in breeding programmes remains limited. Historical germplasm collections preserve variation accumulated through centuries of farmer selection, but their organization into resources suitable for pr...
E. Portis, A. M. Milani, Elsa Martini et al.· Horticulturae· 0 citations
Genome size is a significant trait connected to the evolutionary history of plants and frequently linked to speciation events. In the current study, we evaluated intraspecific variation in 2C-values across a durum wheat collection comprising landraces and cultivars of diverse origins, preserved in the Cypriot gene bank...
Ahmet Gökçebel, Angelos C. Kyratzis, N. Nikoloudakis· Plants· 0 citations
Background/Objectives: Brazilian locally adapted sheep breeds represent valuable genetic resources. However, the commercial valorization of these breeds depends in part on genetic certification to support traceability and verify product origin. This study aimed to identify and evaluate a minimum set of highly informati...
Camila Souza Rodrigues, D. D. de Faria, S. Paiva et al.· Genes· 0 citations
The
in trust
sweetpotato accessions housed at the International Potato Center, Lima, Peru (CIP) represent a large genetic resource collection of this important staple crop, with almost 6, 000 cultivated accessions and 904 crop wild relatives (CWRs). The entire cultivated collection (5,930 accessions of which 22 wer...
N. Anglin, Ronald Robles, G. Rossel et al.· Frontiers in Plant Science· 0 citations
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