Le Trieu

Dalat University · Department of Biology

Dysoxylum mollissimum (Spreng.) Blume ex G. Don is a new record for the flora of Vietnam. This species is distributed in primary and secondary forests in scattered populations at elevations of 800–1200 m above sea level in the provinces of Gia Lai and Lam Dong in the Central Highlands of Vietnam. It is most similar to Dysoxylum loureiri (Pierre) Pi...

Loss of quality and limits on the storage life of potatoes are very difficult problems for farmers around the world. Farmers normally apply chemicals to minimize the number of aerobic colonies and increase the storage life of potato tubers for year-round supply. However, these methods pose harmful health risks to consumers. This research study eval...

A new combination is proposed for Phlegmariurus (Herter) Holub (Lycopodiaceae): P. obovalifolius (Bonap.) V.T. Tran & N.V. Duy, comb. nov., and a new species of Phlegmariurus, P. lancifolius V.T. Tran & N.V. Duy, sp. nov., from southern Vietnam, is described and illustrated. It is distinguished from the closely related P. obovalifolius (Bonap.) V.T...

Genetic diversity and variation of four naturally distributed Huperzia serrata populations in Vietnam were analyzed based on the DNA fingerprint data obtained by ISSR and SCoT techniques separately and combined together. Both of ISSR and SCoT markers showed that the genetic diversity in Vietnam was relatively high at population and species level, e...

The Start Codon Targeted Polymorphism (SCoT) and CAAT box-derived polymorphism (CBDP) techniques were used to analyze the genetic diversity and variation of two bigfin reef squid populations in waters surrounding the Con Dao and Phu Quoc islands of Vietnam for technical comparison. The two used techniques reflected different levels of pairwise gene...

In the present study, start codon targeted (SCoT) polymorphism and CAAT box-derived polymorphism (CBDP) molecular markers were used to study the genetic diversity of ten strawberry cultivars. In addition, shoot regeneration from in vitro leaf explants of ten commercial cultivars, i.e Aicyberry, Kayonoka, Tochiotome, Penchika, Amauo, Pajado, Selva,...

Background Bigfin squid is one of the economically important seafood resources in Vietnam’s fisheries and the waters around Con Dao and Phu Quoc islands are two major fishing grounds where this species has been actively exploited. The start codon targeted polymorphism (SCoT) and CAAT box–derived polymorphism (CBDP) techniques were used to generate...

Camellia sinensis var. madoensis is described and illustrated as a new variety of Camellia sinensis (section Thea, Theaceae) from Xuan Loc Commune, Song Cau District, Phu Yen Province. The new variety is easily distinguishable from C. sinensis var. sinensis by style free ½ to the base. The ITS sequence of this variety is also different from that of...

Paphiopedilum callosum, Paphiopedilum villosum and Paphiopedilum ´ dalatense are endangered species and are currently listed as Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES, 2019) Appendix I species. Thus, the international trade for these naturally occurring species is forbidden. However, the in vitro prop...

Low-dose radiation may stimulate growth in plants in general and in mosses in particular, and thus has the potential to enhance the ability to absorb the airborne elements of mosses used in the moss bag technique by making them growth better. The effect of low-energy X-ray radiation dose on the growth of Babular indica moss was investigated through...

Genetic diversity of natural Huperzia chinensis population in Northwest region of Vietnam was analyzed based on the DNA fingerprint data induced by ISSR and SCoT methods separately and combined data from both methods. The genetic diversity parameters and genetic distances among individuals based on SCoT technique were higher than ISSR technique [ex...

Genetic diversity of naturally distributed Camellia dilinhensis populations on the Di Linh plateau of Vietnam was assessed by the inter-simple sequence repeat (ISSR) and start codon targeted (SCoT) techniques separately and then by combining data from both techniques for satisfactory results. The genetic diversity parameters and genetic distances a...

The effects of low energy X-ray irradiation on microbial inactivation, sprouting inhibition and genetic variation were surveyed. There was an inverse correlation between the exposure dose in range of 0 Gy–5000 Gy and the survival rate of microorganisms. The dose of 1000 Gy seemed to be suitable for inactivation of microorganisms because the respect...

Jasminanthes tuyetanhiae is one of the precious herbs and good for human health, discovered in the Da-Bia Mountain (Phu Yen province, Vietnam). The identification of the CTW species (species believed to be J. tuyetanhiae collected in 2019) by molecular indicators showed that this species belongs to the Apocynaceae family. High similarity (98.2%) in...

Artichoke (Cynara scolymus L.), a high economic value crop, was brought to Vietnam by the French in the late 19th century. The artichoke was mainly planted in Lam Dong, Lao Cai, Vinh Phuc provinces, etc. At present, the disease situation of Artichoke plants and the lack of disease-free seedlings result in insufficient source of Artichoke for produc...

Potato is one of popular agricultural products grown and used in the world with high effective economic and nutritional value. In potatoes, there are always have some harmful bacteria species due to the sources of exposure from the seed, soil as well as the post-harvest environment which make deceasing the quality and quantity of potatoes. Usually,...

Micropropagation has proven to be an effective method for large-scale plant production in a short time and a useful tool for plant breeding. Microbial contamination is one of the most difficult micropropagation challenges, resulting in reduced plant quality and loss of valuable stocks. Therefore, sterilization of culture media is a critical step in...

Panax bipinnatifidus Seem. is a medical plant which has been used as treatment for medical diseases and health maintenance for aged people. The species was listed among Critically Endangered (CR) plants in 2007 Vietnam’s Red Data Book. Inter simple sequence repeat (ISSR) markers were first used to investigate genetic diversity of naturally distribu...

Genetic diversity and variation of three naturally distributed Rhododendron moulmainense populations in the Lam Vien Plateau of Vietnam were analyzed using ISSR and SCoT markers separately and data from the two types of markers were then combined to show the overall results. Based on combined data, the genetic diversity parameters of the Tuyen Lam...

The genus Paramignya (Rutaceae) comprises about 30 species typically distributing in tropical Asia. Like other genera of the family Rutaceae, the significant variation in the morphology of Paramignya species makes the taxonomic study and accurate identification become difficult. In Vietnam, Paramignya species have been mostly found in Khanh Hoa and...

Panax vietnamensis var. langbianensis is a new variety from Lam Vien plateau of Vietnam. In this study, inter simple sequence repeat (ISSR) markers were employed to investigate the genetic diversity and variability of 115 individuals belonging to two naturally distributed populations of this variety, which classified by habitat. Genetic diversity a...

Morphological leaf traits can be used to assess adaptive responses of plants to environmental conditions. To assess how the representation of Huperzia serrata leaf traits, such as leaf length (LL), leaf width (LW) and leaf area (LA) response to changes in mean annual temperature (MAT), sunshine duration (SuH), mean annual precipitation (MAP), air h...

Morphological leaf traits can be used to assess adaptive responses of plants to environmental conditions. To assess how the representation of Huperzia serrata leaf traits, such as leaf length (LL), leaf width (LW) and leaf area (LA) response to changes in mean annual temperature (MAT), sunshine duration (SuH), mean annual precipitation (MAP), air h...

Genetic diversity and variation of four naturally distributed Huperzia serrata populations in Vietnam were analyzed based on the DNA fingerprint data obtained by ISSR and SCoT techniques separately and combined together. Both of ISSR and SCoT markers showed that the genetic diversity in Vietnam was relatively high at population and species level, e...

Lycopodiaceae Mirbel, an ancient group of plants was found in forests, meadows, rock crevices, shrubs, roadsides in some mountainous areas of North and Central highlands of Vietnam. Because of over-exploitation as well as habitat loss, populations of several species of the Lycopodiaceae are seriously declining. This family has not been studied exte...

Panax vietnamensis var. fuscidiscus is a precious medicinal plant which was recently discovered in Sin Ho and Muong Te district, Lai Chau province of Vietnam. Over exploitation of the species in the native habitat poses a serious threat to its existence. Adequate information on the nature and the extent of genetic diversity in this important specie...

Sindora siamensis Teijsn. ex Miq. is a large evergreen tree and of Critically Endangered (CR) species in southern Vietnam. 60 individuals of 6 naturally distributed populations classified by habitat for this species were analyzed. Inter simple sequence repeat (ISSR) markers were employed to investigate the genetic variability in. Results showed hig...

Sindora siamensis Teijsn. ex Miq. is a large evergreen tree and of Critically Endangered (CR) species in southern Vietnam. 60 individuals of 6 naturally distributed populations classified by habitat for this species were analyzed. Inter simple sequence repeat (ISSR) markers were employed to investigate the genetic variability in. Results showed hig...

Việc khảo sát, đánh giá về kiểu hình cũng như kiểu gen là cần thiết nhằm làm tăng hiệu quả cho quá trình nhận dạng, phát triển và chọn tạo giống mới đối với cây trồng. Nguồn gen thuộc một số dòng bơ đã qua chọn lọc để canh tác được thu thập từ một số nơi trong địa bàn tỉnh Lâm Đồng để phân tích đa dạng di truyền và nhận dạng giống. Đặc điểm sơ bộ v...

A new combination is proposed for Phlegmariurus (Herter) Holub (Lycopodiaceae): P. obovalifolius (Bonap.) V.T. Tran & N.V. Duy, comb. nov., and a new species of Phlegmariurus, P. lancifolius V.T. Tran & N.V. Duy, sp. nov., from southern Vietnam, is described and illustrated. It is distinguished from the closely related P. obovalifolius (Bonap.) V.T...

Paphiopedilum villosum var. annamense Rolfe. is the attractive pot plant characterize by its larger and beautiful flower. Wild population of that orchid are now considered to be rare in nature as a result of habitat destruction and commercial preference. Thus, it is very important that actions should be taken to conserve this orchid before it becom...

A new variety of Panax, P. vietnamensis var. langbianensis is described from Lang Bian Mountain, Lam Vien Plateau in southern Vietnam. It is visually distinct from other two varieties of P. vietnamensis (var. vietnamensis, var. fuscidiscus) by having the shorter petiolules 8-11 mm long, leaflet apex acuminate, pedicels 0.4-0.6 cm, petals smaller, d...

Panax stipuleanatus Tsai is a type of medicinal plant within north-west Vietnam. In this study, inter simple sequence repeat markers were employed to investigate the genetic diversity of naturally distributed populations classified by habitat for this species. Genetic diversity at the species level was moderate (HeT = 0.254; PPBT = 96.02%). Genetic...

Five naturally distributed taxa of Panax species in Vietnam were collected and investigated via complete ITS1 5.8S-ITS2 region, 18S rRNA gene and partial matK gene sequences. The investigated sequences together with five other Panax taxa from Genbank (NCBI) were used to reconstruct possible phylogenetic relationships. After phylogenetic relationshi...

Ngày nhận bài: 17.5.2015 Ngày nhận đăng: 20.8.2016 TÓM TẮT Lan hài vàng là loài có hoa to quyến rũ được nhiều người ưa chuộng nên thường xuyên bị tìm kiếm khai thác, hơn nữa môi trường sống của loài đang bị suy giảm. Nếu không có biện pháp bảo tồn loài này sẽ có nguy cơ tuyệt chủng cao.Thông tin về tính đa dạng di truyền ở cả hai mức độ quần thể và...