Effects of chronic exposure of seeds and seedlings of Arabidopsis thaliana by low doses of γ-radiation on plant growth and development

• Main Author: S. V. Litvinov
• Format: Article
• Language: English
• Published: Institute for Nuclear Research, National Academy of Sciences of Ukraine 2014-12-01
• Series: Âderna Fìzika ta Energetika
• Subjects: chronic exposure; low dose radiation; ontogeny of plants; radiobiological effects; phenomodification
• Online Access: http://jnpae.kinr.kiev.ua/15.4/Articles_PDF/jnpae-2014-15-0406-Litvinov.pdf

Article presents the results of research on the effect of chronic γ-irradiation in small doses on A. thaliana seedlings and seeds growth and development. Exposure rate for the seeds was 0,45 mGy/h (total absorbed dose 30 cSv) and 0,18 mGy/h for seedlings (total absorbed dose 3 cSv). Statistically significant differences in the ger-mination capacity, in the time of primary leaf rosette formation, in the hypocotyl length were revealed between irradiated and control seedlings. Plants from irradiated seeds differed by the higher growth rate of stem, they flowered and fruited earlier, but they also characterized on average shorter vegetative cycle in comparison with control plants. In our experiments it is shown еру significant impact of chronic low doses of γ-irradiation of seeds and seedlings on the ontogeny in A. thaliana and on the parameters that reflect the growth and development of the irradiated plants.