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Doctoral thesis summary: Evaluation on genetic diversity and identification molecular marker for Vietnamese native Dendrobium species

Research objectives: Thesis was the first studied methodically systematic assessment of genetic diversity by morphological indicators combined with molecular markers, identification of Vietnamese native Dendroium species based on the ITS sequences. The results of the thesis have significance in the classification, the conservation service, and selection and breed new varieties; these will be contributing to improve Vietnam orchids. | MINISTRY OF EDUCATION AND TRAINING MINISTRY OF AGRICULTURE AND RULAR DEVELOPMENT VIETNAM ACEDEMY OF AGRICULTURAL SCIENCES TRAN DUY DUONG EVALUATION ON GENETIC DIVERSITY AND IDENTIFICATION MOLECULAR MARKER FOR VIETNAMESE NATIVE DENDROBIUM SPECIES Discipline Genetics and Crop Selection Number Code 62.62.01.11 SUMMARYOF DOCTOR THESIS HA NOI - 2015 The thesis was raging at INSTITUTE OF AGRICULTURAL GENETICS VIETNAM ACEDEMY OF AGRICULTURAL SCIENCES Scientific supervisors 1. Association Prof. Dr. La Tuan Nghia 2. Dr. Nguyen Thi Thanh Thuy Reviewer 1 . Reviewer 2 . Reviewer 3 . The dissertation will be defended before the doctoral thesis Councilatthe Vietnam Academy of Agricultural Sciences In .times.date.month.year. Search the thesis in Vietnam Academy of Agricultural Sciences Library INTRODUCTIONS 1. Main of objective The genus Dendrobium one of the largest genera in the Orchidaceae includes more than 1148 species and enormous morphological diversification has hindered the establishment of consistent classification systems covering all major groups of this genus and 2nd orchids after Bulbophyllum orchids Bulbophyllum Leitch et al. 2009 . Southeast Asia can be considered as the homeland of Dendrobium with more than hundreds of species particularly in Vietnam has more than 100 species Tran Hop 1998 Nguyen Xuan Linh 2002 Averyanov 2004 Duong Duc Huyen 2007 and they are widely distributed across the regions of the country. In the conservation and sustainable use of plant genetic resources assessing the gene bank is extremely important step not only for the identification of similar different species but also to understand the relationship genetic system between varieties species to conserve genetic diversity. The strong developments of methods and techniques in the field of molecular biology have created an effective tool and quickly are applied in studies of biodiversity conservation. The advantage of the molecular technique is capable to identify the genetic diversity .