Person: ATAK, ÇİMEN
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ATAK
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ÇİMEN
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Publication Metadata only Magnetik alanın Soya Glycine Max L Merrill tohumları üzerine etkisi(1996) Yurttaş, B.; Yalçın, S.; Mutlu, D.; Azakoulieva, A.; ATAK, ÇİMEN; 6653Publication Metadata only Gama radyasyonunun Allopoliploidlerin Mitoz Bölünmesi üzerine etkisi(1994) Ünlü, G.; ATAK, ÇİMEN; 6653Publication Metadata only Radiosensitivity in callus tissues of soybean(glycine max.(L.)merril)(1994) Alikamanoğlu, Sema; ATAK, ÇİMEN; 6653; 176641Radiosensitivity of soybean as expressed by callus growth was examined after exposure of primary leaf explants with gamma rays.The leaf explants were irradiated 24 hours after incubation on the medium with gamma radiation doses of 0,5,7.5,10,25,50,75 and 100 Gy from Co-60 source. At the 30-day culture of callus the percentage of callus formation from irradiated explants was not different from the percentage of control callus formation. The decreasing average callus fresh weights were in connection with the increasing doses of the radiation and this relationship was significant (P<0.05).The differences between the doses of 5 Gy with 50 Gy and 100 Gy were significant (P<0.05) and the Gr-50 dose was found as 37 Gy for J-357 soybean variety.But the comparison of close doses of radiation was not significant from the point of decreasing average callus fresh weightPublication Metadata only Induced mutation and radiation sensitivity in vitro culture of soybean (Glycine max L. Merrill)(1999) Alikamanoğlu, S.; Yalçın, S.; ATAK, ÇİMEN; 6653; 176641In our research, the seeds of J-357 soybean variety were irradiated with 50, 100, 200, 300 and 500 Gy of gamma rays. Callus and meristem cultures were established from the primary leaves and apical meristem of 5-day-old seeding from the irradiation seeds. The average callus fresh weight formed at the cultures were determined on the 30th day and GR50 dose which reduces the callus fresh weight at the rate 50% in accordance with control was found as 250 Gy. The regenerated plants from meristem cultures were determined on the 28th day and LD50 dose which decreases the regenerated plant percentage at the 50% in accordance with control was found as 220 Gy. Cytological investigation was done at the callus and meristem cultures obtained from both irradiated seeds and explants. At the seed and explant irradiations, gamma radiation dose between the ranges 50 to 200 Gy and 5 to 25 Gy; respectively were used. Observations were done at mitotic anaphase in the samples taken from meristem and callus cultures. In anaphase, two types of cytological aberrations, bridge and fragments were determined. The regenerated plants were grown in the climate chamber and the seeds were taken from each M1 plant and chlorophyll mutants were determined in M2 generation. The radiosensitivity of the meristem cultures established by irradiated seeds from view of plant regenerations and plant number which is taken seed was evaluated by comparing with the results of meristem cultures established from the irradiated explant from the point of in vitro mutation studiesPublication Metadata only Gama Işınları ile Işınlanan Soyada ( Glycine Max L. Merrill) Klorofil Mutasyonu(1991) ATAK, ÇİMEN; 6653Publication Metadata only Effects of Magnetic Field on soybean (Glycine max. L. Merrill) seeds(1997) Yurttaş, B.; Yalçın, S.; Mutlu, D.; Rzakoulieva, A.; Danilov, V.; ATAK, ÇİMEN; 6653Publication Metadata only Soya fasülyesi Glycine Max L Merrill kallus ve meristem kültürlerine gama radyasyonunun etkileri(1996) Alikamanoğlu, Sema; Yalçın, S.; ATAK, ÇİMEN; 6653; 176641Publication Metadata only Radiation Induced Mutations for Yield and Oil Content in Soybean(1990) Özbek, N.; Atilla, S.; Sağel, Z.; ATAK, ÇİMEN; 6653Publication Metadata only Soya fasulyesi Glycine Max L Merrill Meristem kültürlerinde gama radyasyonunun bitki rejenerasyonuna etkisi(1994) Alikamanoğlu, Sema; ATAK, ÇİMEN; 6653; 176641