高粱不同品种染色体G-带带型的比较

Comparison of Chromosome G-banded Patterns in Different Cultivars of Sorghum Vulgare Pers

用ＡＳＧ 法对高粱（Ｓｏｒｇｈｕｍ ｖｕｌｇａｒｅ ｐｅｒｓ） 品种竹叶青、郑粱２ 号、忻粱７ 号和甜杆Ｇ的根尖细胞染色体进行Ｇ－ 显带，结果在每条染色体近着丝粒区域显示清晰的带纹－ 在每对同源染色体中，两成员的Ｇ－ 带带型相同－ 比较四品种的Ｇ－ 带带型，各号染色体短臂显示的带数基本相同，但第３ 至第７ 号染色体长臂所显示的带数不同－ 四个品种单倍体染色体组Ｇ－ 带总数分别为４６ 、４２ 、４７ 和４８ 条－ 本文还对高粱染色体Ｇ－ 带带型分析在高粱进化、分类的研究和在杂交亲本。

The chromosome of sorghum vulgare pers in four cultivars, that is, zhuyeqing, zhengliang 2、xinliang 7 and Tiangan G, were treated by an ASG method The results showed that the bands appeared at the regions near the centromeres in each chromosome are clear The G-bands patterns between homologous chromosomes are the same in number, size and staining degree of bands The number of G-bands is similar on shrot arms of each chromosome but is different on long arms from 3 to 7 chromosome among four cultivars All numbers of G-bands of haplothromosome qenome are 46、42、47 and 48 in the four cultivars respectively The application about G-bands patterns of sorghum were discussed in studies of evolution and classification, selection of parentals and identification of hybrids