April - June 2007 - Kasetsart University

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226 de Lee, M. Hornes, A. Frijters, J. Pot, J. Peleman, M. Kuiper and M. Zabeau. 1995. AFLP: a new technique for DNA fingerprinting. Nucleic Acids Research 23(21): 4407-4414. Kasetsart J. (Nat. Sci.) 41(2) Xia, Y.M., W.J. Kress and L.M. Prince. 2004. Phylogenetic analyses of Amomum (Alpinioideae: Zingiberaceae) using ITS and matK DNA sequence data. Systematic Botany 29(2): 334-344.
Kasetsart J. (Nat. Sci.) 41 : 227 - 231 (2007) Prediction of Sweet Corn Seeds Field Emergence under Wet Soil Condition Vichai Wongvarodom* and Wikanate Rangsikansong ABSTRACT Field emergence prediction of sweet corn seeds under wet soil conditions was studied using three different quality seeds of Hawaiian Sugar Super Sweet and Super Sweet Argo Extra MT varieties. The seeds were subjected to germinate in sand at room temperature. Germination was evaluated for 7 days after planting (DAP). Flooded germination was done by planting the seeds in 1000 g of clay soil in a plastic basket, flooding at 1 cm above soil level for 5 hours and evaluating at 7 DAP. Field emergence was studied under daily watering, three times a day, to simulate wet planting soil condition. Field emergence evaluation was performed at 7 DAP. Results showed that the sweet corn seeds with 79.50- 91.00% germination of Hawaiian Sugar Super Sweet and Super Sweet Argo Extra MT varieties had field emergence of 61-79% under wet soil condition. The lower quality seed had the field emergence of lower than 60%. Sand germination and flooded germination in clay soil did not correspond to field emergence under wet soil condition. The field emergence under wet soil condition of sweet corn seeds could be predicted by the polynomial equations which gave better results than sand germination test. Key words: field emergence, wet soil condition, sand germination, flooded germination, sweet corn seeds INTRODUCTION Germination test is an analytical procedure to evaluate seed viability under standardized (favorable) laboratory conditions (ISTA, 1999; AOSA, 2001). The percentage of germination reflects the planting value of a seed lot (Liu et al., 1999). However, it was frequently found that standard germination did not correspond to the field performance under stress planting conditions (Delouche and Baskin, 1973; Vieira et al., 1999). Sand germination test in room temperature for corn seeds has been used widely in many of the developing countries, due to simple and low cost test, and using less specific equipment. Most importantly, result of the test has to be highly accurate with standard germination (Dungpatra, 1986). Many crop production areas, including Thailand, are faced with heavy raining in the planting season which resulted in wet soil condition in the planting field (Martin et al., 1988; Jittham, 2002). Some vigor tests have been develop for more accurate prediction for field emergence under the stressful planting condition in corn (Sawatdikarn, 2002), sweet corn (Jittham, 2002) and cucumber (Werakul, 2003) in the humid Division of Agricultural Technology, Department of Industry and Technology, Faculty of Science and Technology, Prince of Songkla University, Muang, Pattani 94000, Thailand * Corresponding author, e-mail: seedinter@yahoo.com Received date : 08/08/06 Accepted date : 15/11/06
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Page 3 and 4: KASETSART JOURNAL NATURAL SCIENCE T
Page 5 and 6: Kasetsart J. (Nat. Sci.) 41 : 205 -
Page 7 and 8: harvesting time which started from
Page 9 and 10: y Chen and Paull (2000). Figure 1 a
Page 11 and 12: pineapple fruit allowed the accumul
Page 15 and 16: Kasetsart J. (Nat. Sci.) 41(2) 215
Page 17 and 18: Cluster analysis Cluster analysis u
Page 21 and 22: Table 3 (Continued) 1 2 3 4 5 6 7 8
Page 25: CONCLUSION AFLP markers classified
Page 29 and 30: difference of soil texture used in
Page 31 and 32: under wet soil condition planting.
Page 33 and 34: tropics. Following the expansion, w
Page 35 and 36: sealed in a plastic box with 1 cm w
Page 37 and 38: moisture content increment after so
Page 39 and 40: Frequency Frequency 30 20 10 0 20.0
Page 41 and 42: School, Kasetsart University. The a
Page 43 and 44: for combining ability of lines (Lam
Page 45 and 46: selective mass sibbing within indiv
Page 47 and 48: Although most of S 2-interfamily hy
Page 49 and 50: composite sets as used in this stud
Page 53 and 54: days. The numbers of calli producin
Page 55 and 56: the report of Ching (1982) showing
Page 57 and 58: clearly amplified bands generated b
Page 59 and 60: caused by either the recombination
Page 61 and 62: Kuhlmann, V. and B. Foroughi-Wehr.
Page 63 and 64: Xanthomonas fuscans subsp. aurantif
Page 67 and 68: was collected and washed with 70% e
Page 69 and 70: expected size was amplified with 35
Page 71 and 72: eaction technique has been used for
Page 73 and 74: Schaad, N.W., D. Opgenorth and P. G
Page 75 and 76: 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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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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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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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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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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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
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April - June 2007 - Kasetsart University

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