[切尔诺贝利原子能电站事故发生7年后在布良斯克州生长的岩生菜种群中的细胞遗传学效应]
[The cytogenetic effects in Crepis tectorum populations growing in Bryansk Province observed in the 7th year after the accident at the Chernobyl Atomic Electric Power Station].
作者信息
Shevchenko V V, Grinikh L I
出版信息
Radiats Biol Radioecol. 1995 Sep-Oct;35(5):720-5.
Cytogenetic analysis of seedlings from the seeds of four populations of Crepis tectorum plants grown during 7 years in localities of Bryansk Province contaminated with radioactive products was carried out. The frequency of chromosome aberrations in root meristematic cells was higher than at similar dose rates within 30-km zone of the Chernobyl NPP. At the same frequency of chromosome aberrations (induced at higher dose rates) karyotypes with pronounced frequency were observed in 30-km zone of the Chernobyl NPP. In Bryansk Province karyotypes were not found. This fact can be explained by the following: irradiation which induced the bulk of chromosome aberrations took place not at the stages of meiosis-early embryogenesis when the induction of chromosome aberrations leading to changed karyotype was more possible but after that.
对在布良斯克州受放射性产物污染地区生长7年的4个群的岩生菜植株种子所培育出的幼苗进行了细胞遗传学分析。根分生组织细胞中染色体畸变的频率高于切尔诺贝利核电站30公里区域内类似剂量率下的频率。在切尔诺贝利核电站30公里区域内，当染色体畸变频率相同时（在较高剂量率下诱导产生），观察到了具有明显频率的核型。在布良斯克州未发现核型。这一事实可解释如下：诱导大量染色体畸变的辐射并非发生在减数分裂 - 早期胚胎发育阶段（此时更有可能诱导导致核型改变的染色体畸变），而是在此之后。
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