KASETSART JOURNAL NATURAL SCIENCE (http://www.rdi.ku.ac.th) <strong>Kasetsart</strong> Journal (Natural Science) is a peer-reviewed journal of <strong>Kasetsart</strong> <strong>University</strong> (www.ku.ac.th) which publishes original research articles on natural sciences and other topics dealing with current knowledge and advances in technology. The <strong>Kasetsart</strong> Journal (Natural Science) is issued four times per year. Articles from researchers worldwide are welcomed. EDITORS Editor-in-Chief Wanchai Chanprasert Associate Professor, Seed Science and Technology, Faculty of Agriculture, <strong>Kasetsart</strong> <strong>University</strong>, Thailand e-mail: agrwcc@ku.ac.th Associate Editor Amara Thongpan Associate Professor, Cell and Molecular Biology, Faculty of Science, <strong>Kasetsart</strong> <strong>University</strong>, Thailand EDITORIAL BOARD Roberto Bonoan Researcher, Department Manager, Soil Science, National Tobacco Administration, Department of Agricualture, Philippines Korchoke Chantawarangul Assistant Professor, Civil Engineering, Faculty of Engineering, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Parnjit Damrongkulkamjorn Assistant Professor, Electrical Engineering, Faculty of Engineering, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Praparat Hormchan Associate Professor, Entomology, Faculty of Agriculture, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Kanapol Jutamanee Associate Professor, Plant Physiology, Faculty of Science, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Onanong Naivikul Professor, Cereal Chemistry and Technology, Faculty of Agro-Industry, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Eiji Nawata Associate Professor, Tropical Agriculture, Kyoto <strong>University</strong>, Japan Saran Petpiroon Associate Professor, Marine Ecology and Pollution, Faculty of Fisheries, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Witoon Prinyawiwatkul Professor, Food Science and Technology, Louisiana State <strong>University</strong> and LSU Agricultural Center, USA Hathairat Rimkeeree Assistant Professor, Product Development, Faculty of Agro-Industry, <strong>Kasetsart</strong> <strong>University</strong>, Thailand U Ravi Sangakkara Professor, Crop Ecology, Faculty of Agriculture, <strong>University</strong> of Peradeniya, Sri Lanka Uthaiwan Sangwanit Lecturer, Forest Resources, Faculty of Forestry, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Thongchai Suwonsichon Associate Professor, Food Science, Faculty of Agro- Industry, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Aree Thankijjanukij Associate Library Director, Agricultural Information Management, <strong>Kasetsart</strong> <strong>University</strong> Satoru Tsuchikawa Assistant Professor, Near Infrared Spectroscopy and Agricultural Science, Graduate School of Bioagricultural Sciences, Nagoya <strong>University</strong>, Japan Sirichai Wongnarkpet Assistant Professor, Veterinary Epidemiology, Faculty of Veterinary Medicine, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Kenji Yamane Associate Professor, Floriculture and Horticulture, Faculty of Agriculture, Utsunomiya <strong>University</strong>, Japan MANAGING EDITORS Orawan Wongwanich Senior Researcher, <strong>Kasetsart</strong> <strong>University</strong> Research and Development Institute, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Somporn Maneeprasopsuk Researcher, <strong>Kasetsart</strong> <strong>University</strong> Research and Development Institute, <strong>Kasetsart</strong> <strong>University</strong>, Thailand EDITORIAL ADVISORY BOARD Gerald T. Baker Professor, Entomology, Mississippi State <strong>University</strong>, USA A. Bruce Bishop Professor, Civil and Environmental Engineering, Utah State <strong>University</strong>, USA Samakkee Boonyawat Associate Professor, Forest Resource Management, Faculty of Forestry, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Delores Chambers Assistant Professor, Food Science, College of Human Ecology, Kansas State <strong>University</strong>, USA Edgar Chambers Professor, Food Science, College of Human Ecology, Kansas State <strong>University</strong>, USA Angsumarn Chandrapatya Professor, Entomology, Faculty of Agriculture, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Mauricio A. Elzo Professor, Animal Breeding and Genetics, <strong>University</strong> of Florida, USA John Hampton Professor, Seed Science and Technology, Lincoln <strong>University</strong>, New Zealand Parichat Hongsprabhas Assistant Professor, Food Science, Faculty of Agro-Industry, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Sathaporn Jittapalapong Associate Professor, Veterinary Parasitology, Faculty of Veterinary Medicine, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Helen H. Keenan Professor, Environmental Science, <strong>University</strong> of Strathclyde, Scotland Saichol Ketsa Professor, Postharvest Technology, Faculty of Agriculture, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Jumras Limtrakul Professor, Physical Chemistry, Faculty of Science, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Chitochi Miki Professor, Structural Engineering, Tokyo Institute of Technology, Japan Larry Miller Professor, Agricultural Education College of Food, Agriculture and Environment, Ohio State <strong>University</strong>, USA Tadashi Miyata Professor, Entomology, Nagoya <strong>University</strong>, Japan Punpiti Piamsa-nga Assistant Professor, Computer Engineering, Faculty of Engineering, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Wiroj Rujopakarn Professor, Transportation Engineering, Faculty of Engineering, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Ed Sarobol Associate Professor, Crop Physiology, Faculty of Agriculture, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Narongrit Sombatsompop Professor, Polymer Processing, School of Energy and Materials, King Mongkut’s <strong>University</strong> of Technology Thonburi, Thailand Peerasak Srinives Professor, Plant Breeding, , Faculty of Agriculture at Kamphaeng Saen, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Rungsit Suwanmankha Professor, Weed Science, Faculty of Agriculture, <strong>Kasetsart</strong> <strong>University</strong>, Thailand Chanvit Vajrabukka Professor, Animal Science, Physiology, Animal Behavior, Faculty of Agriculture, <strong>Kasetsart</strong> <strong>University</strong>, Thailand PUBLISHER The <strong>Kasetsart</strong> Journal (Natural Science) is published by <strong>Kasetsart</strong> <strong>University</strong> Research and Development Institute (KURDI), <strong>Kasetsart</strong> <strong>University</strong>, Bangkok, Thailand EDITORIAL OFFICE <strong>Kasetsart</strong> <strong>University</strong> Research and Development Institute (KURDI), <strong>Kasetsart</strong> <strong>University</strong>, Chatuchak, Bangkok 10900, Thailand TEL 66 (2) 5795548; FAX 66 (2) 5611474 e-mail: kj_rdi@ku.ac.th
KASETSART JOURNAL NATURAL SCIENCE The publication of <strong>Kasetsart</strong> <strong>University</strong> VOLUME 41 <strong>April</strong> - <strong>June</strong> <strong>2007</strong> NUMBER 2 Changing in TSS, TA and Sugar Contents and Sucrose Synthase Activity in Ethephon-Treated ‘Pattavia’ Pineapple Fruit ...................... Ngarmnij Chuenboonngarm, Niran Juntawong, Arunee Engkagul, .............................................................. Wallop Arirob and Surin Peyachoknakul 205 Phylogenetic Analysis of Thai Amomum (Alpinioideae: Zingiberaceae) Using AFLP Markers ............. Wittaya Kaewsri, Yingyong Paisooksantivatana, Uamporn Veesommai, ............................................................. Wichan Eiadthong and Srunya Vajrodaya 213 Prediction of Sweet Corn Seeds Field Emergence under Wet Soil Condition ............................................ Vichai Wongvarodom and Wikanate Rangsikansong 227 Modifying Controlled Deterioration for Evaluating Field Weathering Resistance of Soybean .............................................Ye Changrong, Prapa Sripichitt, Sunanta Juntakool, ....................................................................Vipa Hongtrakul and Arom Sripichitt 232 Composite Line Method for the Development of Early Generation Hybrids of Maize (Zea mays L.) ................. Nguyen Phuong, Krisda Samphantharak and Vatcharee Lertmongkol 242 Anther Culture of BC 1F 1 (KDML105//IRBB5/KDML105) Hybrid to Produce Bacterial Blight Resistance Doubled Haploid Rice ................................. Supanyika Sengsai, Surin Peyachoknagul, Prapa Sripichitt, .......................................................... Amara Thongpan and Pradit Pongtongkam 251 Novel PCR Primers for Specific Detection of Xanthomonas citri subsp. citri the Causal Agent of Bacterial Citrus Canker Udomsak Lertsuchatavanich, Ampaiwan Paradornuwat, Junlapark Chunwongse, ....................................................... Norman W. Schaad and Niphone Thaveechai 262 Soil-to-Plant Transfer of Radiocaesium in Thailand ................................................Thitika Thammavech and Teerasak Veerapaspong 274 Beta-carotene, Mimosine and Quality of Leucaena Silage Kept at Different Duration ............................ Wanna Angthong, Boonlom Cheva-Isarakul, Somkid Promma ................................................................................ and Boonserm Cheva-Isarkul 282 Effects of Natural Mineral Soils on Body Weight and Liver Minerals of Black Head Somali Sheep in Ethiopia .................................... Sisay Tilahun, Pravee Vijchulata, Pornsri Chairatanayuth .............................................................................. and Suwapong Swasdiphanich 288 Protoplast Isolation and Culture of Aquatic Plant Cryptocoryne wendtii De Wit .................. Kanchanaree Pongchawee, Uthairat Na-Nakorn, Siranut Lamseejan, .......................................................... Supawadee Poompuang and Salak Phansiri 300
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days. The numbers of calli producin
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the report of Ching (1982) showing
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clearly amplified bands generated b
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caused by either the recombination
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Kuhlmann, V. and B. Foroughi-Wehr.
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Xanthomonas fuscans subsp. aurantif
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Kasetsart J. (Nat. Sci.) 41(2) 265
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was collected and washed with 70% e
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expected size was amplified with 35
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eaction technique has been used for
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Schaad, N.W., D. Opgenorth and P. G
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MATERIALS AND METHODS Model descrip
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Kasetsart J. (Nat. Sci.) 41(2) 277
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calculated TF value calculated TF v
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sincere gratitude and deep apprecia
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1989). In monogastrics, the inclusi
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of all LLS samples in this study we
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Melbourne, Parkville, Victoria. Goe
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considered responsible for low prod
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Kasetsart J. (Nat. Sci.) 41(2) 291
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mineral supplementation suggested b
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Body weight chane (kg/head) 32 30 2
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CONCLUSION AND RECOMMENDATION With
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SAS. (Statistical Analysis System).
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genes covering a variety of desirab
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mg/l NAA and 0.5 mg/l zeatin) incub
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5. Purification by various sucrose
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as the culture period increased. So
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culture, pp. 1-20. In L.C. Fowke an
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Kasetsart J. (Nat. Sci.) 41 : 311 -
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GC. Analytical methods Total carboh
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ash. The crude hot water polysaccha
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spirulan (H-SP), and a desulfated c
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Kasetsart J. (Nat. Sci.) 41 : 319 -
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cells often displayed an increased
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LITERATURE CITED Bell, T.A. and D.V
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for alternative sources of supply.
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BR2.1.2 formed the same clade with
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supplement with glutamate (Iida et
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optimal for S. limacinum BR2.1.2 fo
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fluorescent lamp at 1.5 kLux develo
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Wisconsin, USA). Total extracted RN
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RESULTS Cloning and sequencing of m
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Expression of rmIL-2 and purificati
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other strains of mice have differen
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dose interleukin-2 therapy promotes
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The chitosano-oligosaccharides are
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enzyme and cells were maximized by
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of crude chitosanases. Fortunately,
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Relative activity (%) 100 80 60 40
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Uchida, K. Tateishi, O. Shida and K
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MATERIALS AND METHODS 1. Materials
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without coating and coated with pec
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in Table 5-7. It was found that the
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Kasetsart J. (Nat. Sci.) 41 : 363 -
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the cultures at 10,200 × g for 15
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incubation and reached the final pH
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y lysine- and tyrosine-decarboxylas
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during the stages of ripening as su
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Kasetsart J. (Nat. Sci.) 41 : 373 -
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As the 25 companies were divided in
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All the data comes up with informat
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as piece “A” or straight as pie
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et al. (1998); Zeng (2000); and Tal
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p 1, i * Kasetsart J. (Nat. Sci.) 4
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c ≤ c2 jq2 j n q p k p * 2, j , ,
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algorithm would consider RM 5, prio
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Kasetsart J. (Nat. Sci.) 41(2) 389
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the maximum deviation of about 10%.
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Stock Quantities Using Heuristic Op
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which dynamically and automatically
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2. Framework architecture and compo
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Risk (VaR) calculation which was im
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Throughput (job/sec) 7 6 5 4 3 2 1
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Speed up 40 35 30 25 20 15 10 5 0 F
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and discovery, resource selection a