Germoplasmas de mandioca para tolerancia ao estiolamento causado por Botryodiplodia theobromae Pat
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- Manihot esculenta
- BOTRYODIPLODIA THEOBROMAE
- Chlorosis
- Cultivars
- Selection
- Resistance
- Fungicides
- Brazil
- DISEASES AND PATHOGENS
- Mycoses
- Pests
- South America
- Starch crops
- Manihot esculenta
- BOTRYODIPLODIA THEOBROMAE
- Clorosis
- Cultivares
- SELECCION
- Resistencia
- Fungicidas
- Brasil
- Monograph series
- Series monográficas
- Yuca
- Cassava
- Serials book
- 41193
Item type | Current library | Collection | Call number | Copy number | Status | Date due | Barcode | Item holds | |
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CIAT Library Document collection CINFOS | Document Collection CINFOS | 41193 (Browse shelf(Opens below)) | c.1 | Short Loan | 100059655 |
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En la estacion exptl. de Campos, Brasil, se evaluo y selecciono germoplasma de yuca tolerante a etiolacion (clorosis) causada por Botryodiplodia theobromae. La frecuencia de clorosis se evaluo con base en las plantas sobrevivientes con o sin sintomas, en relacion con un no. de plantas esperado/parcela, segun una escala progresiva de dano x susceptibilidad. Germoplasma identificado como promisorio fue Canela de Urubu I, Aipim Rosinha, IAC 5-51 y SRT 1099 por su resistencia/tolerancia a B. theobromae. Para reducir la clorosis en los cultivos de yuca y complementar la identificacion de cv. tolerantes, se recomienda realizar con cuidado la transferencia de material de propagacion en areas exentas de problemas, hacer una seleccion rigurosa de estacas sanas, aplicar un tratamiento quimico presiembra con fungicidas a base de mancozeb y desinfectar los instrumentos de corte de las estacas con alcohol etilico. (CIAT) spa
Cassava germplasm tolerant to etiolation (chlorosis) caused by Botryodiplodia theobromae was assessed and selected at the Campos exptl. station, Brazil. Frequency of chlorosis was assessed on the basis of surviving plants with or without symptoms, in relation to the no. of expected plants/plot, according to a progressive damage x susceptibility scale. Most promising germplasm was Canela de Urubu I, Aipim Rosinha, IAC 5-51, and SRT 1099 due to their resistance/tolerance to B. theobromae. To reduce chlorosis in cassava crops and complement the identification of tolerant cv., recommendations are to carefully transfer propagation materials to disease-free areas, rigorously select healthy cuttings, apply preplanting chemical treatment with mancozeb-based fungicides, and disinfect cutting instruments with ethyl alcohol. (CIAT) eng