Citation
Bastos C.N., . and Albuquerque P.S.B., . (2006) Evaluation of cocoa genotypes to witches'broom disease Crinipellis perniciosa using phloem sap. [Proceedings Paper]
Abstract
Witches' broom disease caused by Crinipellis perniciosa is the limiting factor in the development of cocoa Theobroma cacao in Brazil. The only effective control measure is through phytosanitation and the use of resistant cocoa genotypes. Brazil has the world's largest cocoa germoplasm collection established at the Station of Genetic Resources of Cocoa Marituba Para but identification of resistant genotypes has been hampered by several factors. We have report the feasibility of identifying cocoa genotypes resistant to C. perniciosa through basidiospore germination on cocoa phloem sap extracted from adult trees. Phloem sap cocoa genotypes with field resistance as CAB 270 CAB 208 CAB 214 and CCN 51 totally inhibited basidiospore compared to no effect by sap from succeptible genotypes ICS 39 PA 195 CAB 155 CAB 0112 and Catongo. These results indicate that this technique provides a simple and quick alternative method to screen for resistance of cocoa to C. perniciosa.
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Abstract
Witches' broom disease caused by Crinipellis perniciosa is the limiting factor in the development of cocoa Theobroma cacao in Brazil. The only effective control measure is through phytosanitation and the use of resistant cocoa genotypes. Brazil has the world's largest cocoa germoplasm collection established at the Station of Genetic Resources of Cocoa Marituba Para but identification of resistant genotypes has been hampered by several factors. We have report the feasibility of identifying cocoa genotypes resistant to C. perniciosa through basidiospore germination on cocoa phloem sap extracted from adult trees. Phloem sap cocoa genotypes with field resistance as CAB 270 CAB 208 CAB 214 and CCN 51 totally inhibited basidiospore compared to no effect by sap from succeptible genotypes ICS 39 PA 195 CAB 155 CAB 0112 and Catongo. These results indicate that this technique provides a simple and quick alternative method to screen for resistance of cocoa to C. perniciosa.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | 2 tables |
| AGROVOC Term: | CRINIPELLIS PERNICIOSA |
| AGROVOC Term: | THEOBROMA CACAO |
| AGROVOC Term: | PLANT PROTECTION |
| AGROVOC Term: | DISEASE CONTROL |
| AGROVOC Term: | PHLOEM |
| AGROVOC Term: | GENOTYPES |
| AGROVOC Term: | GERMINATION |
| AGROVOC Term: | BRAZIL |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:26 |
| URI: | http://webagris.upm.edu.my/id/eprint/15638 |
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