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Cuba Develops Strategy to Fight Destructive Citrus Virus
Via NY Transfer News Collective * All the News that Doesn't Fit
Agencia Cubana de Noticias (ACN)
http://ainch.ain.cu/mailman/listinfo/ingles
Cuba Develops Strategy to Fight Destructive Citrus Virus
Havana, Nov 2 (acn) As a result of Cuban scientists' studies of the
most destructive virus threatening citrus production, that is the
Tristeza virus, epidemics caused by its most efficient vector have been
prevented.
The internationally-recognized research was carried out by a
multidisciplinary team headed by Drs.Lochy Batista Le Riverend, Ines
Pea and Karelia Velasquez, with the Tropical Fruit Growing Research
Institute, in collaboration with Francisco F. Laranjeira, with Brazil's
Agricultural and Livestock Research Enterprise.
The Cuban scientists' study is the only one of its kind in the country
and one of the first ones completed in the world, using modern
statistical techniques and the analysis of the focal structure, which
are methods rarely used on plants.
Dr. Lochy noted an im****tant outcome of the research was the
establishment of complex climatic patterns to determine what the
influence of the weather conditions in the virus populations' behavior
is. It also revealed the vector's variation patterns and response to
climatic changes.
Based on the scientific results of the study, the strategies used in
the management of citrus plantations in Cuba were modified taking into
account among other facts, the virus reproduction rates. This has
resulted in a positive impact in the national citrus cultivations,
while allowing a more efficient use of resources, said Lochy.
The new management program and the improvement of the epidemiological
control system have prevented the outbreak in Cuba of epidemics caused
by the black citrus aphid, which is tristeza virus' most effective
vector.
The research on the Tristeza virus has been recognized with the
national award of the Cuban Sciences Academy in 2006 and by
international institutions such as the University of California in the
U.S and Brazil's Federal Rural University of Pernambuco.
Of the more than 30 virus and virus-like diseases of citrus known in
the world, citrus tristeza virus (CTV) is the most destructive. In
1981, the total world loss attributable to this disease was estimated
at 50 million trees. The high degree of efficacy of the black citrus
aphid as a CTV vector was demonstrated by the rapid spread of the
disease in South America immediately after the introduction of the
disease.
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