Ceratocystis wilt of cacao - A disease of increasing importance

被引:32
作者
Engelbrecht, Christine J. [1 ]
Harrington, Thomas C. [1 ]
Alfenas, Acelino [2 ]
机构
[1] Iowa State Univ, Dept Plant Pathol, Ames, IA 50011 USA
[2] Univ Fed Vicosa, Dept Fitopatol, BR-36570 Vicosa, MG, Brazil
关键词
D O I
10.1094/PHYTO-97-12-1648
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Ceratocystis cacaofunesta (formerly C. fimbriata) causes a lethal wilt disease of cacao (Theobroma cacao) in the Caribbean and Central and South America. Recent studies employing phylogenetics, intersterility, and host range separate the cacao pathogen from other strains of the C. fimbriata complex. Ceratocystis wilt has been managed through genetic resistance, but the disease is an emerging problem in Bahia, Brazil, where it was recently introduced. Genetic studies indicate that populations of the fungus in Costa Rica, Colombia, and Bahia may have been introduced on cacao cuttings; whereas populations in Rondonia, Brazil, and western Ecuador appear to be native. The fungal genotype present in Bahia is similar to those found in Rondonia and may have been introduced on propagative material with witches' broom resistance.
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页码:1648 / 1649
页数:2
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