关于甜菜染色体组型的研究,目前国内外仍限于根据中期染色体的形态参数予以分析。但甜菜染色体甚小,平均长度只有2.0—2.6μ左右,最长和最短染色体只差0.6μ,着丝点指数也是在37—47%之间,二倍体甜菜9对染色体,仅第1、2、9对较易识别,其它几对的形态参数极为相近,再加之各研究者所用的材料、前处理、制片方 At present, the research on the chromosome type of beet is still limited to the analysis of the morphological parameters of metaphase chromosomes at home and abroad. But beet chromosome is very small, the average length of only 2.0-2.6μ, the longest and shortest chromosome is only 0.6μ, centromere index is between 37-47%, diploid beet 9 pairs of chromosomes, only the first, 2,9 pairs of more easily identified, the other several pairs of morphological parameters are very similar, together with the researchers used the material, pretreatment, producer