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将抗赤霉病的普通小麦 -大赖草 Lr.2染色体单体异附加系花粉经过 60 Co- γ射线处理 ,然后给感赤霉病的普通小麦品种“扬麦 5号”授粉 ,杂交后代连续 2年进行赤霉病抗性单株接种鉴定 ,从中选育出一个普通小麦 -大赖草异易位系。经过染色体荧光原位杂交和 Giemsa C-分带鉴定 ,易位发生在普通小麦 4 B染色体长臂和大赖草第 2条染色体 ( Lr.2 )的短臂之间 ,易位断点在 4 B染色体 C-带带型的 L 2 .2区 ,在 FL0 .4 2和 FL0 .61二条带纹之间 ,为 T4 BS.4 BL- L r.2 S易位染色体 ,含该易位染色体的个体称为 T0 1易位系
The common wheat - Leymus racemosus Lr.2 Chromosome Monosomic Alien Addition to the Fusarium head blight was treated with 60 Co - γ ray, and then the common wheat cultivar “Yangmai 5” For two consecutive years of scab resistance inoculated single plant identification, which bred an ordinary wheat - Larvae heterotic translocation line. After chromosomal fluorescence in situ hybridization and Giemsa C-banding identification, the translocation occurred between the short arm of chromosome 4 B and the short arm of Larvae 2 (Lr.2), and the translocation was between 4 The C-banding region of the B-chromosome, L2.2, between the two bands of FL0.42 and FL0.61 is the T4 BS.4 BL-L r.2S translocation chromosome containing the translocated chromosome The individual is called the T0 1 translocation line