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 หัวเรื่อง:การชักนำให้เกิดการกลายในข้าวโดยวิธีเพาะเลี้ยงเนื้อเยื่อ ตอนที่ 1 ผู้เขียน: P. Pongtongkam, P. Ratisoontorn, S. Suputitada, S. Peyachoknagul, L. Ngernsiri, B. Silayoi, P. Rodrangboon, K. Klakhaeng, R. Senghaphan สื่อสิ่งพิมพ์:pdf AbstractSeeds of Basmati 370 rice variety were cultured on the modified MS medium supplemented with various concentrations of 2,4-D, NAA and kinetin. The suitable callus induction medium was the modified MS medium containign I mg/l 2,4-D, 2 mg/l NAA and 1 mg/l kinetin. Calli from this medium were divided into two groups, one was 3 week old calli (non subcultured calli) and the other was 6 week old calli (subcultured calli). Both groups seemed to grow and develop into plantles quite well on the modified MS medium supplemented with 2 mg/l kinetin. However the percentage of plantles induction from 3 week old calli was better. Calli of both groups were irradiated with different doses of gamma radiation and were cultured on the regenerated medium. The 3 week old calli were better than 6 week old calli in regenerating into plantles. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Floral Biology and Chromosome Number of Nine Peach Cultivars) ผู้เขียน:Umpika Poonnachait,  ดร.สุรนันต์ สุภัทรพันธุ์, ศาสตราจารย์ , Benjamas Silayoi สื่อสิ่งพิมพ์:pdf AbstractThe studies on floral biology of nine peach cultivars planted at the Royal Ang Khang Station, Fang District, Chiangmai Province were conducted during December 1982 and March 1983. It was found that the maximum receptivity falled between 11.00 am. and 12.00 pm. The cross fertilization of peach with stored pollen was successful but the percentage of fruit set depended on the pollen viability. Storability of pollen at different temperatures showed that O?C storing tended to prolong the viability of pollen compared to those stored at 12?C. Chromosome number of nine peach cultivars was 2n = 16, however, the size was extremely small and lose discernible morphological markers for identification. |
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