论文部分内容阅读
大多数植物突变及其应用研究主要是讨论突变的诱发、突变体的筛选、鉴定以及由于主位点突变引起的表型变化的利用。这些主基因位点的突变称之为“大突变”,其突变效应非常明显。但诱变因素的效应研究目前已涉及到微基因突变,这种突变称之为“微突变”。Baur,Stubbe和Wettstein先后强调了微突变在进化中的重要性。为了提高选择效果,微突变育种需选用适宜的诱变剂处理,以诱发最大程度的遗传变异。本研究报道了利用γ射线和亚硝基甲基脲(NMU)在M_2和M_3代诱发小扁豆的大突变和微突变。
Most plant mutations and their applications are mainly about mutation induction, selection and identification of mutants, and utilization of phenotypic changes due to major site mutations. Mutations in these major gene loci are called “big mutations” and their mutational effects are very noticeable. However, the study of the effect of mutagenic factors has been involved in the micro-gene mutation, this mutation is called “micro-mutation.” Baur, Stubbe and Wettstein have highlighted the importance of micro-mutations in evolution. In order to improve the selection effect, micro-mutation breeding need to use the appropriate mutagen treatment to induce the greatest degree of genetic variation. This study reports the use of gamma rays and nitrosoureas (NMU) in the M_2 and M_3 generations induced lentils large mutations and micro-mutations.