Abstract
The evaluation of vegetable germplasm variation is important to classify and identify the desirable characteristics for improvement and conservation of crops. The objective of the study was to analyze the morpho-agronomic diversity of cassava accessions in the Las Montañas region, Veracruz, Mexico. The morphogenetic diversity of 11 cassava accessions was determined with the Shannon (H’) index and the Jaccard similarity coefficient (J’) from 30 qualitative characters. An analysis of main components (ACP) and cluster was applied to 15 quantitative characters. The characters with significant variation were the shape of the central lobe of the sheet, orientation of the petiole, color of the epidermis and shape of the plant. The H 'index oscillated between 0.13 and 1 (x̄= 0.43) indicating a low diversity due to similarity (J' from 43 to 100%; x̄= 69%) between accessions, which were classified into 3 groups according to the analysis of Cluster, coinciding with the ACP that explained 87% of the variation. The study indicates the existence of sufficient genetic information provided by the variability of four morpho-agronomic characters, which is attributed to the diversity of lineages that are adapted to the geographical origin of the accessions evaluated.References
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