Cadang-cadang

Coconut cadang-cadang viroid
Virus classification Edit this classification
(unranked): Viroid
Family: Pospiviroidae
Genus: Cocadviroid
Species:
Coconut cadang-cadang viroid

Cadang-cadang is a disease caused by Coconut cadang-cadang viroid (CCCVd), a lethal viroid of several palms including coconut (Cocos nucifera), African oil palm (Elaeis guineensis), anahaw (Saribus rotundifolius), and buri (Corypha utan). The name cadang-cadang comes from the word gadang-gadang that means dying in Bicol.[1] It was originally reported on San Miguel Island in the Philippines in 1927/1928. "By 1962, all but 100 of 250,000 palms on this island had died from the disease," indicating an epidemic.[2] Every year one million coconut palms are killed by CCCVd and over 30 million coconut palms have been killed since Cadang-cadang was discovered. CCCVd directly affects the production of copra, a raw material for coconut oil and animal feed. Total losses of about 30 million palms and annual yield losses of about 22,000 metric tons (22,000 long tons; 24,000 short tons) of copra have been attributed to Cadang-cadang disease in the Philippines.[3]

  1. ^ Cite error: The named reference Hanold-Randles-1991-a was invoked but never defined (see the help page).
  2. ^ Haseloff J.; Mohamed N.A.; Symons R.H. (1982). "Viroid RNAs of cadang-cadang disease of coconuts". Nature. 299 (5881): 316–321. Bibcode:1982Natur.299..316H. doi:10.1038/299316a0. S2CID 4232530.
  3. ^ Zelazny B (1980). "Ecology of Cadang-Cadang Disease of Coconut Palm in the Philippines". Phytopathology. 70 (8): 700–703. doi:10.1094/phyto-70-700.