Abstract—The eight-year dynamics of the quality of motherwort (Leonurus quinquelobatus Gilib.) seed progeny growing for more than 60 years under chronic radiation in the East-Ural Radioactive Trace (EURT) zone, in comparison with background cenopopulations, has been studied. The absorbed dose rates of the parent plants in the EURT area exceed the background level by 1–3 orders of magnitude. The unique dependence between the radiation dose of mother plants and the seed progeny quality was not found. A key role in the formation of Leonurus quinquelobatus seeds belongs to weather factors, as well as the combined effect of weather conditions and chronic irradiation. All the studied characteristics of Leonurus quinquelobatus seed progeny quality from the EURT zone positively correlated with the effective temperature sum in April, i.e., with thermal conditions at the beginning of plant vegetation. The main meteorological factors that affected the physiological response (viability, mutability, and radiosensitivity) of Leonurus quinquelobatus of the background and impact zones were Selyaninov’s index in April of the current season and the amount of precipitation in November of last year. The viability of seed progeny had a negative correlation with Selyaninov’s index, whether the mutability of seed progeny had a positive correlation with Selyaninov’s index for background and impact samples. The physiological response to weather conditions, assessed by the seed radioresistance, was positive in the background samples and negative in the impact samples. The dependencies between the total precipitation in November of last year and the quality of seeds in the background samples were positive, and these dependences were negative in the impact samples.

中文翻译：

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慢性辐射照射下益母草（Leonurus quinquelobatus）种子后代的年际质量变异性

摘要——研究了东乌拉尔放射性微量 (EURT) 区在慢性辐射下生长 60 多年的益母草 (Leonurus quinquelobatus Gilib.) 种子后代质量的八年动态，并与背景新种群进行了比较。 . EURT 区域内亲本植物的吸收剂量率超过背景水平 1-3 个数量级。未发现母株辐射剂量与种子后代质量之间的独特依赖性。益母草种子形成的关键作用在于天气因素，以及天气条件和慢性辐照的综合作用。EURT区益母草种子后代品质的所有研究特征均与4月有效温度总和呈正相关，即：植物植被开始时的热条件。影响背景区和撞击区五色益母草生理反应（生存力、变异性和辐射敏感性）的主要气象因素是当季4月的Selyaninov指数和去年11月的降水量。种子后代的生存力与Selyaninov指数呈负相关，种子后代的变异性是否与背景和影响样本的Selyaninov指数呈正相关。通过种子抗辐射性评估的对天气条件的生理反应在背景样品中呈阳性，而在撞击样品中呈阴性。