Genetic divergence among accessions of Manihot spp



Document title: Genetic divergence among accessions of Manihot spp
Journal: Acta scientiarum. Agronomy
Database: PERIÓDICA
System number: 000460034
ISSN: 1679-9275
Authors: 1
1
2
1
1
3
Institutions: 1Universidade Federal da Paraiba, Departamento de Zootecnia, Areia, Paraiba. Brasil
2Universidade Federal da Paraiba, Departamento de Ciencia Biologica, Areia, Paraíba. Brasil
3Universidade Federal da Paraiba, Departamento de Ciencias Fundamentais e Sociais, Areia, Paraiba. Brasil
Year:
Volumen: 42
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, analítico
English abstract The aim of this study was to perform a morphological and morphoagronomic analysis of wild Manihot species from a Brazilian semiarid region for inclusion in the collection at the Center for Agricultural Sciences, Federal University of Paraíba. To characterize the 55 accessions, 12 quantitative and 18 qualitative descriptors were used. A dissimilarity matrix was generated by Mahalanobis generalized distance (D²), and clusters were identified by the UPGMA method. It was possible to verify the formation of 8 dissimilar groups based on morphological characters and 5 groups based on morphometric characters, indicating the presence of genetic diversity among accessions. The evaluated morphometric variable with the greatest relative contribution was the length between the central lobe. Based on the dissimilarity matrix, the accessions 16 x 48 were the most genetically distant accessions, followed by 47 x 49. The accessions 4 Monteiro, 16 Soledad, 38 Boa Vista, 3 Pedra Lavrada, 7 Junco, 10 Barra de Santa Rosa, 21 Monteiro, and 39 Junco are the most promising and can be used as parents in breeding programs for this forage species
Disciplines: Agrociencias,
Biología
Keyword: Plantas para uso industrial,
Genética,
Bancos de germoplasma,
Manihot,
Morfología vegetal,
Divergencia genética
Keyword: Plants for industrial use,
Genetics,
Manihot,
Genetic divergence,
Germplasm banks,
Plant morphology
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