论文部分内容阅读
基于形态学的显著差异,对紫花苜蓿(Medicago sativa L.)、黄花苜蓿(Medicago falcata L.)和白花苜蓿(Alfalfa with Cream flower)进行染色体核型分析,结果表明,3种类型的苜蓿材料在染色体核型方面有显著差别,白花苜蓿和黄花苜蓿都是随体染色体,其中,黄花苜蓿有2条为端部着丝点染色体,其核型公式分别为:紫花苜蓿2n=4x=24m+8sm、黄花苜蓿2n=4x=24m+6sm+2T(SAT)、白花苜蓿2n=4x=24m+8sm(SAT)。紫花苜蓿与白花苜蓿的染色体具有89%的相似性,只是在紫花苜蓿7号染色体和白花苜蓿15号染色体存在随体有无的区别;黄花苜蓿染色体具有独特性,显著区别于紫花苜蓿和白花苜蓿,但从其19号染色体来看,参与了紫花苜蓿或白花苜蓿的构建;白花苜蓿15号随体染色体与黄花苜蓿25号随体染色体和紫花苜蓿7号染色体有高度的相似性,但也存在随体有无的区别。
Based on the significant morphological differences, the karyotype analysis of alfalfa (Medicago sativa L.), Medicago falcata L. and Alfalfa with Cream flower showed that three types of alfalfa There were significant differences in the karyotypes of the chromosomes. Both Medicago sativa and Medicago falcata were chromosomes. Among them, two Medicago sativa chromosomes were terminal centromere. The karyotypes were alfalfa 2n = 4x = 24m + 8sm , Alfalfa 2n = 4x = 24m + 6sm + 2T (SAT), alfalfa 2n = 4x = 24m + 8sm (SAT). Medicago sativa and Medicago sativa chromosomes have 89% similarity, only in alfalfa chromosome 7 and Medicago sativa chromosome 15 presence of presence or absence of the difference; Medicago trichosanthes chromosome unique, significantly different from the alfalfa and alfalfa , But from its chromosome 19, it was involved in the construction of alfalfa or alfalfa. The chloroplast of alfalfa 15 was highly similar to chromosome 25 of alfalfa alfalfa and chromosome 7 of alfalfa, but also existed With or without the difference between the body.