Research List

No.	Researcher	Title	Abstract	Year
1731	Zaw Myo Hein	STUDY ON SHELL MORPHOLOGY AND INTERNAL SOFT TISSUE ANATOMY OF GOLD-LIPPED PEARL OYSTER PINCTADA MAXIMA (JAMESON, 1901) IN MYEIK ARCHIPELAGIC WATERS	Pearl oyster of Pinctada maxima is the largest species in genus Pinctada and commonly found in Myeik Archipelagic waters. Morphology of Pinctada maxima mainly based on shell features such as external scale sculpture, internal features of shell. Its internal organs, especially anal papilla had different shape from other Pinctada taxa. Mantle was enclosing all soft tissues and organs. The adductor muscle was strongest and controls the closing of valves.The fundamental function of mantle is to secrete shell valves and ensure their growth. Gills performed the sieving and sorting of food particles. Labial palps accepted the food particles that filtered from gills or released the unnecessary particles as pseudofeces. The adductor muscle is strongest and controls the closing of valves.	2021
1732	Tint Lwin	FERMENTATION CONDITIONS FOR THE PRODUCTION OF ANTIBACTERIAL METABOLITE FROM THE ENDOPHYTIC FUNGUS, ASPERGILLUS TURCOSUS	Seventeen different kinds of selected mangrove leaves collected at Ma Gyi coastal area, Shwe Taung Yan Township, Ayeyarwady Region during monsoon period, 2016. The selected endophytic fungus, Aspergillus turcosus was isolated from Bruguiera cylindrica (L.) Blume (Byu-Kyet-Tet). In the investigation of antimicrobial activities, this endophytic fungus exhibited highly antibacterial activity on Agrobacterium tumefaciens IFO5431. Based on the growth kinetics of this fungus, it was found that 54 hr of ages and 10% of sizes of inoculum were suitable for the fermentation. The good production of antibacterial metabolite from the endophytic fungus was occurred in glycerol and corn powder as carbon sources and in peptone and beef extract as nitrogen sources against Agrobacterium tumefaciens. Five fermentation medium (FM-1, FM-2, FM-3, FM-4 and FM-5) were prepared for the fermentation study, according to the results of the effects of carbon and nitrogen sources utilization on the fermentation. It was observed that FM-1 medium was the most suitable for the production of antibacterial metabolite.	2021
1733	Khin Maung Naing	ASSESSMENT ON SEAGRASS COVER AND DENSITY AT MAGYI (SHWETHAUNGYAN) COASTAL AREA, AYEYARWADY REGION	In the present study, analysis of seagrass cover and density have been carried out at MaGyi (Lat. 17� 04' 25" N, Long. 094� 27' 55" E), October, 2019. Three 100m-transect are laid perpendicular to the shoreline and each transect is at a distance of 50m from each other. A total of three transects is generally enough in a given area, thus seagrass cover and density are recorded from a total of 33 quadrats and 12 quadrats respectively. 20.06 % of seagrass are covered in this study area. Average shoot density in a site was 107 and 1280 total shoot density in a site.	2021
1734	Phoo Wint Yee Thaw	CO-INOCULATION EFFECT OF BACILLUS PUMILUS TUAT1 AND BRADYRHIZOBIUM JAPONICUM USDA110 ON GROWTH PARAMETERS OF SOYBEAN*	Enhancement of legume nitrogen fixation by co-inoculation of plant-growth-promoting rhizobacteria (PGPR) with rhizobia is an alternative way to improve the availability of nitrogen in a sustainable agricultural system. This study was conducted to evaluate the co-inoculation effect of Bacillus pumilus TUAT1 and Bradyrhizobium japonicum USDA110 on soybean (Glycine max L.) cv. Enrei by using the plant box experiment and examined the growth parameters (plant weight, root weight, nodules number and nodule weight). The experiment was performed in the Plant Microbiology Laboratory, Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, Japan in 2018. The growth parameters were measured after 15 days, and 30 days of inoculation period and the results indicated an increase number for all parameters in the dual inoculation than the single inoculation. The plants inoculated with B. pumilus TUAT1, B. japonicum USDA110 and co-inoculation (TUAT1 + USDA110) promoted the plant weight and root weight of soybean compared to un-inoculated plants in both inoculation periods. The nodule formation was not observed in the plants inoculated with B. pumilus TUAT1 alone and un-inoculated (control) at 15 days post inoculation, when co-inoculated and USDA110 inoculated plants provided the highest number of nodules and nodules weight after 30 days. The results proved the potential benefits of increasing nodulation and promoting plant growth through the synergetic effect of TUAT1 and USDA110.	2021
1735	Phu Htet	ISOLATION OF FUNGI FROM SOIL SAMPLES AND THEIR ANTIMICROBIAL ACTIVITIES	Ten soil samples were collected from ten different places of Waing Maw areas, Kachin State. 22 fungi were isolated from these ten soil samples. The isolated soil fungi were checked the antimicrobial activity by paper disc diffusion assay method. PPK-01, PPK-03, PPK-04, PPK-10, PPK-14, PPK-18 and PPK-20 showed antibacterial activities. The fungus PPK-10 and PPK-14 showed the activity on Agrobacterium tumefaciens IFO543, Bacillus subtilis KY-327, Micrococcus luteus NITE83297, Pseudomonas fluorescens IFO94307. Among them, PPK-10 showed the highest antibacterial activities (PPK-10, 29.62 mm inhibitory zone) on Agrobacterium tumefaciens IFO543. This fungus PPK-10 was isolated from the soil sample collected from Nawng Hee. Therefore, fungus PPK-10 was selected for further investigations based on the results of antimicrobial activity.	2021
1736	Lai Lai Win	MORPHOLOGICAL AND HISTOLOGICAL STUDIES OF HYPSELANDRA VARIABILIS (Collett & Hemsl.) Pax & K. Hoffm.	Hypselandra variabilis (Collett & Hemsl.) Pax & K.Hoffm., locally known as Thamon, belongs to the family Capparaceae (Capparidaceae). It is indigenous to Myanmar, especially found in Mandalay, Sagaing and Magway Regions. The specimens were collected from Pakokku Township in Magway Region. The present work deals with the morphological and anatomical characters of both vegetative and reproductive parts of the plant. In morphological study, Hypselandra variabiis (Collett & Hemsl.) Pax & K.Hoffm is a perennial, medium-sized tree that bears greyish brown to dark brown bark, the branches are slightly pubescent when young. The leaves are simple and variable in shape and size. Inflorescences are terminal or axillary corymbose racemes. Flowers are bisexual, actinomorphic, hypogynous and leafy bracts. The outstanding characters are the presence of the androgynophore and the absence of corolla. The ovary is superior and parietal placentation. The histological study showed that stomata were present only on lower epidermis and anomocytic type. Uniseriate, multicellular, basal-celled trichomes were present on the upper surface of epidermal cells. Vascular bundles were found in the form of a collateral, closed type and crescent shape in midrib. The petiole, stem and gall were observed in the form of a collateral, closed type and circular in shape but the root was found in radial type. These characters presented in this research could be used as standardization in traditional medicine.	2021
1737	Moe Moe Myint Aung	MORPHOLOGICAL AND HISTOLOGICAL CHARACTERS OF CURCUMA AROMATIC SALISB.	The plant Curcuma aromatica Salisb. locally known as Taw-Sanwin, belongs to the family Zingiberaceae. It is collected from Hpa-an Township, Kayin State during the flowering and rhizomes period in 2019. In this paper, the morphological and histological characters of the leaves, midrib, petiole, leaf sheath, tuber, root, and rhizomes of Curcuma aromatic Salisb. were studied at Department of Botany, Hpa-an University. Verification of plant was carried out by available literatures. In histological study, free hand sections of leaves, midrib, petiole, leaf sheath, tuber, root, and rhizome were studied and examination of powdered samples was also carried out for standardization of drug. In morphological study, the plant is perennial herb with tubers aromatic rhizome. Leaves are distichous with open sheath. Inflorescences are terminal a leafy shoot directly from the rhizome. Flower bisexual, zygomorphic and epigynous. Calyx (3), synsepalous. Corolla (3), synpetalous. Androecium of two whorls, fertile stamen and staminodes. Ovary tricarpellary, axile placentation and discs are present. The fruits are fleshy and dehiscent. Seeds round, mostly covered with a large divided aril endosperm abundant, white, hard or mealy. In histological study, the anticlinal walls in the epidermal cell of both surfaces are straight. Tetracytic stomata are present on both surfaces but more abundant on lower surface. Oil cells contain parenchymatous layer of midrib, petiole, leaf sheath, tuber, root and rhizome. Secretory cells and starch grains are present in tuber, root and rhizome. Vascular bundles of lamina, midrib, petiole, leaf sheath, tuber, root and rhizome are collateral type and closed type.	2021
1738	Lwin Mar Saing	STUDY OF MOUNTAIN WILD GRASSES IN LOILEM DISTRICT, SOUTHERN SHAN STATE	Grass belong to family Poaceae (Gramineae) and the one of the largest family in monocotyledon gramineous flowering plants. Grass taxonomy is very differ and difficulty from other flowering plants. Altogether 15 species, 13 genera, 8 tribes, 4 subfamilies in family Poaceae were collected from Loiem district of Southern Shan State of Myanmar, flowering time from 2018 to 2019.The habitat, underground portions, vegetative and reproductive parts of collected species were presented with photograph records. The whole plant portions are classified, identified, verified and evolutionary status by principles author citations of vegetative and reproductive characters. This paper highlights the modified differences characteristics and evolutionary trends of wild mountain grasses in Loilem district of Southern Shan State.	2021
1739	Myat Myat Phyo	THE EFFECTS OF CARBON AND NITROGEN SOURCES FOR THE GROWTH OF SOIL FUNGUS MPF- 7 AND ITS FERMENTATION OPTIMIZATION	In this research work, selected fungal strain collected from Mudon Township. The present study was focused on the utilization of carbon and nitrogen sources for the growth and fermentation conditions of soil fungus MPF-7 on Escherichia coli. In the growth effect of the carbon and nitrogen, the excellent growth of MPF-7 was found on glucose and peptone. In the study of fermentation conditions, MPF-7 showed the highest antibacterial activity (22.06 mm) by using 15% seed culture while the best inoculum age was found at 108 hrs on E. coli. In addition of glucose as the carbon source and peptone as nitrogen source in the fermentation, MPF-7 showed the highest antibacterial activity (21.05 mm) and (30.78 mm) on E. coli. Maximum antibacterial activity was observed at pH 6 (23.36 mm). In the temperature effect, the strong activity was obtained at 25�C (23.18 mm). In the comparison effect of static and shaking culture of MPF-7, the maximum antibacterial metabolite was observed under shaking condition (20.00 mm) and the static culture of MPF-7 showed the activity (17.87 mm) on E. coli respectively.	2021
1740	Khin Thet Oo	EFFECT OF ETHYLENE ON FEMALE FLOWERS, FRUIT YIELD AND FRUIT QUALITY OF TRICHOSANTHES CUCUMERINA L.	The experiment was conducted at the field of VFRDC (Vegetable and Fruit Research and Development Center) Yemon, Hlegu Township, Yangon Region from June 2018 to September 2018. The Key point of the experiment was the effect of ethylene treatments on female flowers emergence and the fruit production of Trichosanthes cucumerina L. (Bon-Lon) plants. The experiment was set up in a randomized complete block design (RCBD) with three treatments (1.5ml, 1.0ml, 0.5ml) and each replicated by four. The control plants received none of ethylene treatments. In the experiment, ethylene solutions were sprayed to the plants in alternate weeks, before flower bud emergence. The ethylene solutions applied two times during the life cycle. The statistical results showed that the plant height of ethylene treated plants were reduced than control plants and also the stem girth, number of nodes, internode length, leaf length and leaf width as well. However, the reverse effect of ethylene was observed in the female flower emergence and the fruit yield. Among treatments, T2 (1.0ml) treated plant had higher female flowers and fruit yield. Regarding to the fruit quality, the most sweetness fruit were obtained from T2 (1.0ml). The experiment showed that T2 (1.0ml) ethylene was the proper dosage for female flower, fruit quality and fruit production in Bon-Lon plants.	2021

Research Publications

Myanmar Academy of Art & Science List of Research