Recent cuban results on sugarcane yellow leaf syndrome. | Resultados cubanos recientes sobre el amarillamiento de la hoja en la caña de azúcar.
2002
Peralta, E.L., Centro Nacional de Sanidad Agropecuaria | Chinea, A., Estación Provincial de Investigaciones de la Caña de Azúcar , Matanzas | Arocha, Y., Centro Nacional de Sanidad Agropecuaria | Ortega, E., Departamento de Fisiología de las Plantas, Universidad de La Habana | Capote, M., Instituto Nacional de Investigaciones de la Caña de Azúcar | Piñón, D., Instituto Nacional de Investigaciones de la Caña de Azúcar | Acevedo, R., Instituto Nacional de Investigaciones de la Caña de Azúcar | Jones, P., IACR, Rothamsted, Inglaterra | Rodríguez, M., Centro Nacional de Sanidad Agropecuaria | Martínez, B., Centro Nacional de Sanidad Agropecuaria | Muñiz, Y., Centro Nacional de Sanidad Agropecuaria | González, E., Centro Nacional de Sanidad Agropecuaria | Sánchez, L., Centro Nacional de Sanidad Agropecuaria | Carvajal, O., Estación Provincial de Investigaciones de la Caña de Azúcar , Matanzas
This paper resumes the Cuban results on sugarcane yellow leaf syndrome (YLS) studies. Phytoplasmas belonging to Aster Yellow and Western X groups had been associated to YLS in Cuba, in contrast with negative results regarding luteovirus, fungi and nematodes species. Nested Polymerase Chain Reaction (n-PCR), followed by digestion of N-PCR products with HaeIII restriction enzyme (n-PCR/HaeIII) and leaf brix determination were established as laboratory and field diagnostic methods respectively. Validation parameters of each method are up to 98% and their compared efficacy was 90.32%. Studies on induced host changes showed morphological, physiological and biochemical alterations associated to this disease. The disease provokes sugarcane juice quality changes that were characterized by the increment of non-sugar carbohydrate concentration. Different yield components and agronomic indicators were lower in diseased plants. Results of Cuban Germoplasm Collection evaluation using Chinea’s scale had shown that 18% of represented genotypes are resistant to YLS (grade 2); 24% are intermediate (grade 3); 10% are susceptible (grade 4) and 48% had not shown yellow leaf symptoms. YLS had been detected in some of the commercial sugarcane varieties as C1051-73, C87-51, Ja60-5 and C266-70, but no symptoms had been detected in the 70% of advanced clones and new varieties in extension trials or introduction. Performed assays to clean infected plants using hot water treatment, meristem tip culture and electrotherapy had shown very low efficacy.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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تم تزويد هذا السجل من قبل Instituto de Investigaciones de Sanidad Vegetal