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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Appropriate Temperature and Time for an Accelerated Aging Vigor Test in Sesame (Sesamum indicum L.) Seed) ผู้เขียน: Khin Hnin Thant, จวงจันทร์ ดวงพัตรา,  ดร.จุฑามาศ ร่มแก้ว, ผู้ช่วยศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractSesame is a small-seeded oil crop for which a proper method of testing seed vigor has not been successfully developed. This study was conducted to identify the appropriate combination of temperature and time for accelerated aging vigor testing of sesame. Five seed lots of sesame were used: KU 18 (2006), CPlus 2 (2006), KU 18 (2007), and CPlus 2 (2007), grown at the National Corn and Sorghum Research Center and KU 18 (Contract Farmer 2007), grown by a contract farmer. A completely randomized factorial design with four replications was used. The accelerated aging test was carried out at five different temperatures: 40, 41, 42, 43 and 44?C with six duration periods of 24, 48, 72, 96, 120 and 144 hr and a relative humidity of 100%. The results showed that accelerated aging under conditions of 42-43?C at 100 % RH for 120 hr were appropriate for an accelerated aging test for seed vigor in sesame. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Responses of Bambara Groundnut Seed to Accelerated Aging) ผู้เขียน:Vichai Wongvarodom, Suteera Naulkong สื่อสิ่งพิมพ์:pdf AbstractBambara groundnut seeds of Songkhla 1 and landrace variety were subjected to accelerated aging at temperatures of 40, 43, 46, 49, 52, and 55?C for 48, 72, and 96 hours in order to determine the response of variety and seed quality to accelerated aging conditions. The non-aged and aged seeds were subjected to tests of their quality including moisture content, standard germination, speed of germination, and seedling growth rate. Results indicated that responses of bambara groundnut seeds to accelerated aging differed with varieties and seed quality characteristics. The Songkhla 1 seed was more sensitive to accelerated aging than landrace variety. High quality seeds of both varieties with germination of 86.50- 88.00% had a reduction of viability and vigor after accelerated aging at 40?C for 96 hours and at 43?C for 48-72 hours with germination of 75.50-62.25%. These aging regimes provided seed vigor separation between varieties with germination differences of about 10% while a greater separation (around 20%) occurred after aging at 46?C for 48 hours. Germination and speed of germination index showed a greater response to accelerated aging. Seedling growth rate in terms of shoot length, root length, and seedling dry weight could not be used to evaluate the deterioration of the acceleratingly aged seed. |
หัวเรื่อง:การเร่งอายุเมล็ดพันธุ์ถั่วเขียวเพื่อประเมินอายุการเก็บรักษาในเขตร้อนชื้น ผู้เขียน:Wullop Santipracha, Quanchit Santipracha, Chusri Narongrach สื่อสิ่งพิมพ์:pdf AbstractSeeds of three mungbean varieties, PSU 1, Uthong 1 and KPS 1 Were accelerated aged in 100% RH at 43, 45 and 47 ?C for 48, 72 and 96 hr. Seed quality from each temperature and time of accelerated aging were correlated to the seed stored in paper bags at room temperature for one year to evaluate seed longevity in the humid tropics. Seed accelerated aging could not overcome all of the hard seeds but lower seed viability and vigor. The accelerated aging of mungbean seed for longevity evaluation in the humid tropics in 43 ?C for 96 hr in 100% RH. |
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ที่มา:คณะเกษตรหัวเรื่อง:Accelerated aging of jasmine brown rice by high-temperature fluidization technique |
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หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Inheritance of Field Weathering Resistance in Soybean [Glycine max (L.) Merrill]) ผู้เขียน:Myint, ดร.ประภา ศรีพิจิตต์, รองศาสตราจารย์ , ดร.วันชัย จันทร์ประเสริฐ, รองศาสตราจารย์ , ดร.วิภา หงษ์ตระกูล, รองศาสตราจารย์ , Arom Sripichitt สื่อสิ่งพิมพ์:pdf AbstractA commercial variety of soybean, Chiangmai 60, which is susceptible to field weathering and two field weathering resistant varieties, GC 10848 and Kalitur, were grown and hybridized in the greenhouse at the Department of Agronomy, Kasetsart University. The F1 hybrid seeds and their parental varieties were planted in the greenhouse to produce F2 seeds. Parental varieties, F1 hybrids and F2 progenies were grown in an experimental field during the 2008 dry season at the National Corn and Sorghum Research Center, Pakchong District, Nakhon Ratchasima province. Individual plots were 3?3 m2, with six rows, composed of two rows of parents and four rows of F1 hybrids or F2 progenies for each cross. The spacing between rows was 50 cm and between hills was 25 cm. At physiological maturity, soybean pods were harvested, threshed and subjected to tests for accelerated aging (AA) and electrical conductivity (EC), and the seed coat percentage was measured. Field weathering resistance of the parental plants, F1 hybrids and F2 progenies was evaluated using germination percentages after AA testing and EC values of seed leachate and seed coat percentages. Dominance percentages of F1 hybrids and the frequency distribution of F2 progenies for the germination percentages after AA testing and EC values of seed leachate and seed coat percentages of the two soybean crosses revealed that field weathering resistance was controlled by a polygene with partial dominance. |
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