The Panama Tall and the Maypan hybrid coconut in Jamaica: did genetic contamination cause a loss of resistance to Lethal Yellowing?
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We applied Bayesian population assignment methods to assess the trueness to type of four populations of the coconut cultivar Panama Tall (PNT) located in Jamaica and found that two of them presented a high percentage of off-types, while genetic contamination was low in the two others. The PNT is the pollen parent of the MAYPAN hybrid, which used to be planted in Jamaica to control an epidemic disease: Lethal Yellowing. The main source of contamination was the susceptible Jamaica Tall, thus increasing the susceptibility in the resulting MAYPAN progeny. The incidence of genetic contamination seems however to be insufficient to be the only cause of the latest outbreak of the disease. Neither the MAYPAN nor its parents can be said resistant in the present context of Jamaica.
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Volume 161, Issue 3 , pp 353-360
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- Lethal Yellowing
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- Author Affiliations
- 1. CIRAD, Centre International de Recherches en Agronomie pour le Développement, Avenue Agropolis, TA 80/03, 34398, Montpellier Cedex 5, France
- 2. CIB 18 Waterloo Road, Kingston 6, Jamaica
- 3. CIRAD, Centre International de Recherches en Agronomie pour le Développement, Campus international de Baillarguet, TA 80/F, 34398, Montpellier Cedex 5, France