Variability of seed plant populations under oxidizing radiation and heat stresses in laboratory experiments

Adaptation and Radiation-Induced Chromosomal Instability Studied by Statistical Modeling~!2009-12-10~!2010-02-20~!2010-03-30~!

“…In aged seeds, the negligible values of the G s and G2 c distributions are observed at 0.3 cGy/h, which corresponds to increased seed survival (p < 0.05). This increase could be due to a stimulation of cell proliferation in old seeds irradiated at 0.3 cGy/h (p < 0.05) [24]. The G component is also revealed in the seeds irradiated at 1.2 cGy/h.…”

“…Prolonging the germination period (up to 6 weeks) increased S by only 2-3% and the rootlets were small and brown. The methods of seed sprouting and fixing have been described [23,24].…”

“…Pea seeds were gamma-irradiated at room temperature with 7 cGy 60 Co at 0.3, 1.2, or 19.1 cGy/h. The details of irradiation have been described [24].…”

“…Analyses of the combined effect of radiation and high temperature reveal domination of the G regularities of the CAs appearance (heat stress) and addition of a P component (aging) ( Table 2). Table 3 presents general characteristics and modeling values of the appearances of both cells with CAs in meristem published earlier [24] and the CAs in cells. In the young seeds, a negligible value of the G distribution (G s ) on the number of cells with abnormalities is coupled with a negligible value of the G2 c distribution at 0.3 cG/h that is accompanied by decreasing frequencies of R1, R2, and survival ( Table 3).…”

“…These components can be presented by different combinations of P and G laws where P statistics describe the statistics of independent events [19,21,24] and G statistics characterize statistics after selection [16-19, 21, 24]. The primary injury and late damage follow the Poisson or binomial law [35].…”