Investigation on the most Destructive Diseases to Citriculture and Identification of the Related Pathogens in Hunan Province,China
Hunan is one of the most important provinces in China for citrus production. To evaluate the status of the main citrus diseases, a preliminary survey was performed in citrus orchards in the major production areas of Hunan province. Survey results indicated that citrus canker, citrus excortis viriod (CEV) , and the stem-pitting type of citrus tristeza virus (CTV) were the most serious diseases. Citrus canker caused the most damage on the locally important cultivar Bingtang sweet orange. * Shatian pummelo was identified as a new CEV host. CTV occurred in some cultivars on trifoliate rootstock but not on a large scale. The pathogens causing these diseases were identified using molecular analyses. Rep PCR revealed that the citrus canker pathogen isolates had several profiles. Identification of the viroid CVd-Mb and a mild strain of CTV may provide opportunities for cultivar dwarfing and cross-protection against stem-pitting CTV, respectively.
Citrus canker Citrus excortis viriod (CEV) Citrus tristeza virus (CTV) Molecular identification
S.M. Dai X.F. Ma S. Rizza J. Han F. Li P. Bella A. Catara Z.N. Deng
Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization, Hunan Agricultural Uni National Center for Citrus Improvement, Changsha, Hunan Agricultural University, Changsha, Hunan 410 Department of Phytosanitary Sciences and Technologies, University of Catania, Catania 95123, Italy
国际会议
11th International Citrus Congress(第11届国际柑橘大会)
武汉
英文
1016-1023
2008-10-01（万方平台首次上网日期，不代表论文的发表时间）