Research List

No.	Researcher	Title	Abstract	Year
1761	Aye Aye Thin	POLLEN MORPHOLOGY OF SOME BLUMEA SPECIES DISTRIBUTED IN MANDALAY AREA	The pollen morphology of some Blumea species distributed in Mandalay Area was undertaken. The samples of 8 species belonging to 1 genus under 1Tribes were collected from January to June during the year 2018. The morphological characters of pollen grains of each species were also studied. The types of pollen grains were tricolpate, triporate, tricolporate and tetracolporate. Three species were tricolpate and triporate. Only one species were tricolporate and tetracolporate. The exine ornamentation in pollen was found to be all echinate. The shapes of pollen were spheroidal, prolate spheroidal, oblate spheroidal and subprolate. Four species were spheroidal, two species were subprolate, only one species were prolate spheroidal and oblate spheroidal. The size of pollen were small or medium. Five species were medium and three species were small. An artificial key to the species were also constructed. The pollen photomicrographs of each species were presented by polar view and equatorial view.	2021
1762	Hlaing Hlaing Myint	EVALUATION ON POSTHARVEST SEED QUALITY OF THREE SELECTED LABLAB BEAN CULTIVARS	The study was carried out the seedling growth of three selected lablab bean cultivars Lablab niger Medik var. lignosus Prain cv. Pe-maung-makhaw (V1), cv. Pe-sau (Yin-mar) (V2) and cv. Pe-gyi (Thet-yin) (V3) effected by different duration of seeds storage and storage materials. Postharvest storage of seeds were intended to save seeds and otherwise they were be destroyed mainly by insects and pests. Treatments included four different storage materials bottles, tins, penan bags, plastic bags were used for the seed storage of lablab bean under room temperature for 6 months. The result showed that the highest seed germination and survival percentages were obtained in cv. Pe-maungmakaw (V1) and the lowest percentage in cv. Pegyi (V3) after 2, 4 and 6 months storage. Before storage, increased shoot length 7 DAS and 14 DAS, root length 14 DAS, seedling vigor index 7DAS and seedling vigor index 14 DAS were found in cv. Pegyi (V3). After 2, 4 and 6 months storage, increased shoot length 7DAS and 14 DAS, seedling vigor index 7DAS and seedling vigor index 14 DAS were found in cv. Pe-maung-makaw (V1) and decreased in cv. Pegyi (V3). Before storage, increased root length 14DAS was found in cv. Pesau (V2) and cv. Pegyi (V3) than the cv. pe-maungmakaw (V1). Among the different storage materials, seeds stored in bottles gave many benefits to be the best performance of seedling such as the highest percentage of seed germination and survivals. Bottles should be used as storage container during storage.	2021
1763	Htay Htay Lwin	INVESTIGATION OF MORPHOLOGICAL AND HISTOLOGICAL CHARACTERS, PRELIMINARY PHYTOCHEMICAL EXAMINATION AND ANTIMICROBIAL ACTIVITYON LEAVES OF MUNTINGIA CALABURA L.	The plant Muntingia calabura L., Myanmar name ?Hnget-thagya� belongs to the family Muntingiaceae. The plants are widely distributed in Myanmar. It was collected from Hpa-an township, Kayin State from October to December (2019). In this study, morphological and histological characters, phytochemical properties and antimicrobial activity of Muntingia calabura L. were investigated. In morphological study, the plant is small trees, leaves alternate and simple. Inflorescences solidary cymes. Flower white. In histological study, anisocytic stomata present on lower surface of lamina. Unicellular simple, stellate and multicellular head glandular trichomes are also present. Type of Vascular bundles in lamina, midrib and petiole are collateral type. The powdered sample has been investigated and presented as diagnostic characters for the standardization of powdered drugs. Phytochemical tests were done at Department of Botany, Hpaan University. Phytochemical tests of Muntingia calabura L. leaves showed the presence of alkaloid, ?-amino acid, carbohydrate, flavonoid, glycoside, phenolic compound, protein, reducing sugar, saponin, starch, steroid, tannin and terpenoid. Antimicrobial activity of leaves of Muntingia calabura L. was carried out at Botany Department, University of Yangon by using different solvent extracts (petroleum ether, ethyl acetate, acetone, ethanol, methanol and water). The extracts of Muntingia calabura L. leaves indicated antimicrobial activity against Aspergillus flavus, Bacillus subtilis, Candida albicans, Echerichia coli, Pseudomonas fluorescens and Xanthomonas oryzae. Among them, methonolic extracts showed the most significant antimicrobial activity against Aspergillus flavus and Candida albicans as well as ethanolic extract on Candida albicans. Peteroleum ether and aqueous extract showed antimicrobial activity on all microorganisms. Muntingia calabura L. leaves are effective on protection of diseases which caused by microorganisms.	2021
1764	Khaing Zar Lwin	ANTIBACTERIAL ACTIVITY OF ISOLATED ACTINOMYCETES FROM COLLECTED SOIL SAMPLES AT MAGWAY REGION	In this study, fifteen actinomycetes were isolated from the four soil samples collected at Pwint Phyu Township, Magway Region. Soil samples were carried out from June 2016 to July 2016. The isolation of actinomycetes was undertaken by the method of Chemical Treatment Dilution Method and Physical Treatment Serial Dilution Method. Soil actinomycetes were tested the antibacterial activities with five test organisms by using paper disc diffusion assay method. These isolated actinomycetes showed the antibacterial activities on test organisms. Among them, actinomycete A-01 showed the highest antibacterial activity on Bacillus subtilis (23.41 mm). Therefore, this actinomycete A-01 was selected for further investigation. In the fermentation studies of A-01, it was found that 46 hrs ages and 2% sizes of inoculum were optimized to produce the antibacterial metabolites.	2021
1765	Khin Lay Nandar Aung	BIO COMPOST AND BIOFERTILIZER ON GERMINATION, GROWTH AND YIELD OF ABELMOSCHUS ESCULENTUS (L.) MOENCH. (OKRA)	Experimental study was conducted to assess response of different types of bio composts and biofertilizers on germination, growth and yield of Abelmoschus esculentus (L.) moench. Five treatments: Bokarshi compost, Spirulina biofertilizer, Hatake biofertilizer, Vermicompost and control were comprising in germination and pot experiment. All of the experiments were done in Kyauk Tan Township, February to April in 2020 by using Randomized Completely Block Design (RCBD) with four replications in pot experiment under greenhouse condition. The results indicated that germination, growth and yield parameters treated with all types of bio compost and biofertilizer were found superior than control. Among the treatments, the results of Bokarshi compost were significantly affected than other treatment in cultuvaion of okra.	2021
1766	Khin Myo Aye	PRELIMINARY PHYTOCHEMICAL ANALYSIS, ANTIMICROBIAL AND ANTIOXIDANT ACTIVITIES OF RHIZOME EXTRACT OF KAEMPFERIA CANDIDA WALL.	Morphological characters of rhizome of Kaempferia candida Wall. belonging to the family Zingiberaceae was reported. This specimens had been collected from Mansan Fall, Lashio Township, during July to August 2019.In addition, this rhizome was studied by using phytochemical, antimicrobial tests and then antioxidant activity. The phytochemical tests indicated that alkaloids, glycosides, phenols, polyphenols, reducing sugars and tannins were present in this rhizome. Furthermore, ethanol extract of rhizome has been tested for their antimicrobial activities by using agar-well diffusion method. They were found to be antimicrobial activity against five different types of microbes such as Enterococcus faecalis, Staphylococcus aureus, Bacillus cereus, Candida albicans and Escherichia coli. The antioxidant activity of rhizomes extracts of Kaempferia candida Wall. was carried by 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) scavenging assay. Strong antioxidant activity of Kaempferia candida Wall. was shown in this experiment compared with the control ascorbic acid.	2021
1767	Khin San Nu	INVESTIGATION OF MORPHOLOGICAL, HISTOLOGICAL CHARACTERS AND QUALITATIVE ANALYSIS OF ROTHECA SERRATA (L.) STEANE & MABB.	Rotheca serrata (L.) Steane & Mabb. (Family Lamiaceae) is an important medicinal plant growing in the tropical and warm temperate regions. This plant is locally known as Yin-bya in Myanmar. It was collected from Hpa-an University Campus, Hpa-an Township, Kayin State from March to September 2019. The flowering and fruiting period is from May to September. In morphological study, the plant is perennial shrub, stem bluntly quadrangular. Leaves opposite and decussate, sharply serrate margin. Flower numerous, showy, dichotomous cymes. Fruits black in mature, seeds pyrene. In histological characters, diacytic stomata, uniseriate glandular and non glandular trichomes were present. Calcium oxalate crystals were present in mesophyll tissue of lamina and acicular crystals in petiole and stem. The vascular bundles were collateral and close type in the midrib, collateral and open type in petiole and stem. The present of alkaloid, flavonoid, phenolic compound, starch, reducing sugar, glycoside, saponin, tannins, ?-amino acid and carbohydrates were found in phytochemical investigation. In physicochemical properties, the solubility of powdered leaves was found to be most soluble in polar solvent.	2021
1768	Khin Thida Swe	EFFECT OF CARBON AND NITROGEN SOURCES ON ANTIBACTERIAL METABOLITE PRODUCTION BY ENDOPHYTIC FUNGUS ASPERGILLUS CANDIDUS AGAINST AGROBACTERIUM TUMEFACIENS	In present study, endophytic fungus was isolated from the petiole of Vigna mungo (L.) Hepper in Thae Phyu Village, Hinthada Township, Ayeyawady Region during June in 2018. The endophytic fungus was isolated by surface sterilization method. The effect of various carbon and nitrogen sources were observed for the colony characters, growth condition and maximum antibacterial metabolite production of isolated fungus. The isolated fungus was identified as Aspergillus candidus based on morphological-microscopical characters and references key. The antibacterial activities of Aspergillus candidus were studied by agar well diffusion assay method. The result showed that maximum production of antibacterial metabolite (20.69 mm) was obtained when medium was supplemented with rice powder as carbon source. Fermentation medium containing yeast extract as nitrogen source showed the highest antibacterial metabolite (22.80 mm) production. This study reveals that endophytic fungus serves as a potential source for the production of an effective compound.	2021
1769	Kyi Kyi Win	SPORE- TETRAD AND POLLEN FERTILITY OF TEN Pisum sativum L. CULTIVARS	The studied ten Pisum sativum L. cultivars were commercially cultivated all over in various part of North Western Myanmar. They were grown abundantly in Kalay, Kalay-wa Township in Sagaing Region. The spore- tetrad and pollen fertility of ten Pisum sativum L. cultivars showed micronuclei per spore tetrad is less than 3 mean micronuclei per spore tetrad. The pollens normality have more than 69 % in all the cultivars and lines. These ten cultivars showed the percentage of normal pollen was greater than abnormal pollen. Thus, to improve their fertility and yield characters, it is essentially needed to understand pollen mother cell cycle that produces pollen and spore- tetrad.	2021
1770	Moe Moe Lwin	MORPHOLOGICAL, ANATOMICAL CHARACTERS, PHYSICOCHEMICAL PROPERTIES AND ANTIMICROBIAL ACTIVITIES OF CROTALARIA JUNCEA L.	In the present study, Crotalaria juncea L. belongs to the family Fabaceae which is grown in Kyaing Tong University Campus. In the present study, morphological characters, anatomical characters, physicochemical properties and antimicrobial activity were carried out. In morphological characters, erect, simple or branched, appressed hairy, annual herbs, stem conspicuously striated, leaves oblong to oblanceolate. Flowers terminal racemes, bracts and bracteoles linear, corolla golden yellow; pods cylindrical, brown silky. In anatomical characters, the stomata anisocytic types which abundant on both surfaces and unicellular, uniseriate trichomes abundant on lower surface. Leaves and stem shows non-glandular, unicellular and uniseriate trichomes. In physicochemical properties, the aqueous extracts showed more soluble than other solvents. In antimicrobial activities, results revealed that Crotalaria juncea L. possess significant antimicrobial activities against Aspergillus flavous and Bacillus subtilis.	2021

Research Publications

Myanmar Academy of Art & Science List of Research