摘要
[目的]为研究万寿菊属不同品种间染色体核型差异,揭示不同品种万寿菊染色体核型差异.[方法]采用'丰富'、'印卡'、'发现'黄、'发现'橙、'梦之月'、'奇迹'、'超美'、'大英雄'8个品种为试材,研究了核型公式、平均臂长、最长与最短染色体的相对长度比、核型类型、染色体长度组成以及核型不对称系数等指标.[结果]8个品种万寿菊的核型不对称系数从大到小依次为'丰富'、'印卡'、'大英雄'、'发现'黄、'梦之月'、'发现'橙、'奇迹'、'超美'.核型参数的分析结果在此体现可以推出8种万寿菊的进化顺序为:'超美'、'奇迹'、'发现'橙、'梦之月'、'发现'黄、'大英雄'、'印卡'、'丰富'.[结论]证明万寿菊可能是万寿菊属相对比较进化的种.
Abstract
[Objective]In order to study the effects of chromosome karyotype difference among different varieties of Marigold(Tagetes erecta L.).[Methods]Eight varieties of material treatments were as materials,which were'Rich yellow','Inca yellow','Discovery yellow','Discovery orange','Yellow moon of dream','Marvel golden',Marigold grandiflora,Chifeng Marigold'Yellow'.The karyotype formula,average arm length,relative length ratio of longest and shortest chromosomes,kar-yotype type,chromosome length composition,karyotype asymmetry coefficient and other karyotype parameters among different varieties were measured.[Results]The results showed that the karyotype asymmetry coefficients of the eight marigold varieties from large to small were Tagets erecta L.'Rich yellow'＞Tagets erecta L.'Inca yellow'＞Chifeng Marigold＞Tagets erecta L.'Discovery yellow'＞Tagets erecta L.'Yellow moon of dream'＞Tagets erecta L.'Discovery orange'＞Tagets erecta L.'Marvel golden'＞Marigold grandiflora,Therefore,the evolutionary order of 8 varieties of marigold can be concluded as follows:Marigold grandiflora,Tagets erecta L.'Discovery orange',Tagets erecta L.'Yellow moon of dream',Tagets erecta L.'Discovery yellow',Chifeng Marigold,Tagets erecta L.'Inca yellow',Tagets erecta L.'Rich yellow'.[Conclusion]It also proved that marigold may be a relatively evolved species of marigold genus.
基金项目
山西省农业科学院农业科技创新项目(YCX2020203)
NETL
NSTL
万方数据