Abstract
This study focused on clarifying phylogenetic relationships among Citrus accessions from Vietnam. Our phylogenetic analysis based on nucleotide sequences from the ITS of the ribosomal DNA included 69 accessions belonging to Citrus and related (sub)genera. Maximum parsimony and Bayesian analysis confirmed a clear separation of the three ‘true’ Citrus species (C. medica, C. maxima and C. reticulata). Confirming recent taxonomic revisions, Fortunella, Poncirus trifoliata and Citrus hystrix are clustered among the accessions of subgenus Citrus. C. × sinensis accessions revealed a close evolutionary relationship to either C. maxima or C. reticulata, thereby confirming their involvement in its hybrid origin. Also, some other hybrid taxa and their proposed parental species were investigated and their origin could in some cases be confirmed using the ITS sequence data.
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Acknowledgments
Special thanks are given to colleagues and institutions for providing Citrus accessions and technical assistance: Dr. Do Dinh Ca-Research Institute for Fruits and Vegetables (RIFAV) (Ha Noi), Ms Vo Thi Tuyet-Phu Qui’s Fruit Tree Center, (PQFC), Dr. Pham Van Chuong-Agricultural Science Institute of North-Central Vietnam (ASINC), MSc Doan Nhan Ai- Fruit Tree Research & Development Center of ThuaThien-Hue (FRDC-Hue), Dr. Nguyen Minh Chau, Dr. Nguyen Thi Thu Hong, Ir Pham Ngoc Lieu-Institute of Southern Fruit Research Institute (SOFRI).
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Tina Kyndt and Tran Nhan Dung equally contributed to this work.
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Kyndt, T., Dung, T.N., Goetghebeur, P. et al. Analysis of ITS of the rDNA to infer phylogenetic relationships among Vietnamese Citrus accessions. Genet Resour Crop Evol 57, 183–192 (2010). https://doi.org/10.1007/s10722-009-9460-0
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DOI: https://doi.org/10.1007/s10722-009-9460-0