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本试验采用C0~(60)γ-射线1.2万伦照射龙辐73-8955大豆(Glycine Max. (L.)Merr)稳定系的风干种子,于干燥器中贮存不同时间,以探明辐射的贮存效果。研究表明,贮存对M_1—M_3的某些性状的变化存在差异,M_1代的出苗率,出苗速度,处理间没出现差异。出苗后一周的苗高,存活率随贮存时间延长显著下降(P<0.01);不孕株率则随时间延长而上升(P<0.01)。M_2代,叶绿素总突变率起伏变化,于播前16天处理组形成最高值。贮存使籽粒变小,植株变高。M_3代,株高、籽粒大小仍因贮存表现出差异。早熟株出现率总趋势随贮存时间延长而下降,M_1代的辐射损伤和M_2—M_3遗传性状变化的差异,说明辐射贮存于M_1(生物学效应),也存在于M_2、M_3代(遗传效应)。不过M_3代的遗传性状差异不甚明显。
In this experiment, air-dried seeds of the stable strain of Glycine Max. (L.) Merr. Irradiated by C0 ~ (60) γ-rays at 12,000 Lun were stored in a desiccator at different times to ascertain the effects of radiation Storage effect. The results showed that there were differences in some traits of M_1-M_3 in storage, but there was no difference in emergence rate, emergence rate and treatment among M_1 generations. One week after emergence, the seedling height and survival rate decreased significantly with prolongation of storage time (P <0.01). The rate of infertility increased with time (P <0.01). On the M_2 generation, the total chlorophyll mutation rate fluctuated, reaching the highest value at 16 days before sowing. Stored smaller grain, plant height. M_3 generation, plant height, grain size still show differences due to storage. The general trend of the emergence of precocious strains decreased with storage time. The difference of the radiation damage of M_1 generation and the genetic trait of M_2-M_3 indicated that the radiation was stored in M_1 (biological effect), M_2 and M_3 (genetic effect) . However, the genetic characteristics of M_3 generation difference is not obvious.