 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Agrobacterium Mediated Transformation of Sri Sumrong 60, a Thai Cotton Variety) ผู้เขียน: H. Chair, R. Kuhapituktum, T. Attathom, C. Pannetier, S. Attathom สื่อสิ่งพิมพ์:pdf AbstractTechniques were developed for the induction of embryogenic callus, as well as the transformation and regeneration of Sri Sumrong 60, a Thai cotton variety. Somatic embryogenesis was obtained by culturing hypocotyls explants on MS based medium containing zeatin and NAA and subculturing on an hormone-free medium. This method yielded 23-50% embryogenic callus induction. Transformation of Sri Sumrong 60 with a synthetic CryIA (b) gene was achieved by using Agrobacterium tumefaciens strain, with the addition of 100 mM acetosyringone to the medium during inoculation and co-cultivation steps. PCR amplification was used to verify the presence of cryIA (b) in regenerated plants, thus suggesting the successful transformation of the Thai cotton variety Sri Sumrong 60. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Isolation and Culture of Protoplasts from Different Explants of Cotton (Gossypium hirsutum L.)) ผู้เขียน: ดร.ประพนธ์ บุญรำพรรณ , Catherine Pannetier, Yves Chupeau สื่อสิ่งพิมพ์:pdf AbstractProtoplasts were isolated from callus, cotyledons, hypocotyls and leaves of cotton (Gossypium hirsutum L. var. Coker 310) using different digestion media. Protoplast yield per gram of fresh mass of leaves, callus cotyledons and hypocotyls was 22.2, 5.5, 1.7 and 1.1 million respectively. Protoplasts were most viable in basic medium in presence of thidiazuro 0.663 gm/l and 2, 4, 5-trichlorophenoxy acetic acid 7 mg/l. Hypocotyl and leaf-derived protoplasts formed microcolonies. Addition of CaCl2 and glutamine to the basic medium improved protoplast survival, and division of hypocotyl and leaf-derived protoplasts. The growth conditions, such as the light and carbon source of donor plant were the important factors for protoplast isolation and culture. |