(1913 - 1997)
Político y economista. Su principal aporte teórico a la economía fue la diferenciación entre los conceptos de "crecimiento" y "desarrollo" que aparece por primera vez en su análisis acerca del libro de Raúl Lorenzo titulado El empleo en Cuba.
Agrarian and Fishery Sciences
2005 | Contributions to the characterization, diagnosis and epidemiology of diseases caused by bacteria and phytoplasmas in the cultivations of cane sugar and papaya in Cuba
Main executives entity: National Center of Farming Sanity (CENSA) (1)
Other entities: Tropical Fruit Growing Research Institute (IIFT) (2), National Institute for Sugarcane Research (INICA) (3), "Osvaldo Sánchez” Sugar Mill, Güines (4)
Main author: Yaima Arocha Roseta (1)
Coauthors: Mercedes López (1) , Esther L. Peralta (2) , Bertha Piñol (1) , Miriam Fernández (1) , Roberto Almeida (3) and Buenaventura Picornell (4) .
Summary:

There are considerable losses in Cuba associated to phytoplasmas: in the cultivation of papaya, the disease similar to bunchy top (PBT-like), is distributed in several provinces and in sugar cane, ratoon stunting disease (RSD), leaf scald (LS) and yellowing leaf syndrome (YLS), produce losses from 15 to 60%.

This result embraces the development and the validation of diagnosis methodologies of world novelty to detect phytoplasmas, based on the non radio-active hybridization of nucleic acids, which were nationally introduced to analyze germplasm from both cultivations and for the certification of cane seeds. There were developed simple massive methods (YLS, LS and RSD) and simultaneous methods in cane (LS/RSD and YLS/LS/RSD). The corresponding references are enclosed.

Some of the most important scientific contributions are: the first international report of S. saccharivora leaf jumper, as YLS vector; the confirmation of phytoplasmas as causal agents of YLS in the country; first world report of phytoplasmas of 16SrX group association with a disease in papaya and the report of its presence as a new phytosanitary problem, important for Cuba and the region; the identification of two new taxonomical groups associated to YLS (16SrXVI group Candidatus Phytoplasma graminis) and PBT-like (16SrXVII group Candidatu s Phytoplasma caricae), contributions of great repercussion to the taxonomical classification system of phytoplasmas; the identification of four new alternative hosts of these agents and the report of Cynodon dactylon in Cuba as phytoplasmas’ host of 19SrXIV group and of both potential vectors PBT-like (Empoasca papayae) and YLS (a derbid of Cedusa sp.).

The work embraces the first results from these diseases' epidemiology obtained in Cuba and in the region, which are essential in order to perfect their control. These results have been published in 8 articles in scientific magazines, 4 of them very prestigious (International Journal of Systematic and Evolutionary Microbiology, Plant Pathology, New Disease Report, Plant Disease). These have been disclosed in scientific events and have references from many specialists and institutions, among which there are two specialists from English groups, international leaders in this subject. It has been rewarded national and internationally; it received the Honorary Mention of the International Prize from the British Society of Pathology of Plants in 2002.