The genetical material will be effectively used in national improvement programs, introduced directly in production or used in the interchange with foreign institutions, taking into account the importance of the subjected crop in traditional population food and its demand.

Characterization of the existing Xanthosoma genre germoplasm variability was undertaken in the Arceas Germoplasm Bank of the Tropical Viands Research Institute (INIVIT), composed by 12 clones. According to the morphoagronomic evaluation and with the use of multivaried analysis, genotypes were differentiated and the most important variables for characterization were determined. It was defined a list of 13 minimum descriptors, 6 of them not previously recommended by IPGRL. Cariotypes analysis determined the presence of 2n -26 cromosoms in the White and Yellow group and 2n 24 cromosoms for the Purple group.

The study of esterases, peroxidase and polyphenoloxidase was useful to prove the existing variability isoenzymatic systems. It was determined the presence in Cuba of X. Sagittifolium, X. Violaceum, X. Brasilense, X. Atrovirens and Alocasia macrorrhiza. This result constitutes a reliable methodology to characterize Xanthosoma germoplasm, out of a wide collection, what is done for the first time in Cuba and the world, hence its scientific novelty. Introduction Supports from: the Scientific Organ of the Tropical Viand Research (INIVIT); from the Directory of Sceince and Technology of the ministry of Agriculture (MINAGRI);  from the Biology Faculty of the University of Havana (UH), from Santo Domingo Politechnical School of the Ministry of Education  (MINED) and from the XIV Forum Science and Technology. Publications: 3 of them in Plant Genetic Newsletter (IPGRI), (2 of them accepted to be published); 1 Consulting Meeting of CIAT; 2 of them in Rev. Cultivos Tropicales Tropical Crops Journal); 1 Rev. Centro Agrícola (Agricultural Center Journal); 1 BIOCONSER,. 5th Colloquium IBP, Sta. Clara; 2 of them in the Reports Book of the 3rd International Workshop, Bioplants Center, C. Avila. Patents and Registers: It is registered in the National Center of Author´s Rights (CENDA).