摘要
采用常规压片法对鲁棉研15号及其父本——转基因抗虫棉选系613、母本——常规陆地棉选系R55染色体数目和核型进行了研究。结果表明:鲁棉研15号及其父母本的染色体数目均为2n=26。鲁棉研15号的核型公式为:k(2n)=26=10m+12sm+4st,属于"2B"类型,染色体相对长度组成为2n=26=8M1+10M2+4L+4S。其父本的核型公式为:k(2n)=26=6m+2sm(SAT)+16sm+2st,属于"3B"类型,染色体相对长度组成为2n=26=8M1+8M2+4L+6S。其母本的核型公式为:k(2n)=26=20m+6sm,属于"2A"类型,染色体相对长度组成为2n=26=6M1+18M2+2S。通过比较发现,鲁棉研15号倾向于父本,三者中属母本最原始。
The chromosome number and karyotype of worm-resistant hybrid cotton Lumianyan 15 and its two parents were investigated using conventional compression method. The result showed that the chromosome number of worm-resistant hybrid cotton Lumianyan 15 and its parents was all 2n=26. The karyotype formula of worm-resistant hybrid cotton Lumianyan 15 is k（2n）=26： 10m＋12sm＋4st, belonging to the type of ＂2B＂, and the relative length of chromosome is 2n= 26 = 8 M 1 ＋ 10 M2 ＋ 4 L ＋ 4S. The Karyot ype formula of its male parent is k （ 2 n） = 26 = 6 m ＋ 2 sm （SAT）＋16sm＋2st, belonging to the type of ＂3B＂, and the relative length of chromosome is 2n =26=8M1＋8M2＋4L＋6S. The Karyotype formula its female parent is k（2n）=26=20m＋6sm, belonging to the type of ＂2A＂, and the relative length of chromosome is 2n= 26= 6M1 ＋ 18M2 ＋ 2S. Through comparison, it was found that the worm-resistant hybrid cotton Lumianyan 15 is more like its father, and the mother is the most primitive.
出处
《河南农业科学》
CSCD
北大核心
2007年第9期37-41,共5页
Journal of Henan Agricultural Sciences
关键词
棉花
鲁棉研15号
染色体数
核型分析
Cotton
Lumianyan 15
Chromosome number
Karyotype analysis
