比克氏棉渐渗到陆地棉的花色基因的遗传分析  

Genetic Analysis for Introgressive Genes of Petal Color from Gossypium bickii to G. hirsutum L.

作　　者：何鉴星[1] 姜茹琴[1] 张欣雪[1] 李增书 赵国忠 

机构地区：[1]中国科学院遗传研究所,北京100101 [2]河北省石家庄市农业科学院,石家庄050041

出　　处：《Acta Genetica Sinica》2000年第4期344-350,共7页

基　　金：中国科学院"九五"重大项目A!KZ951-A_1-101

摘　　要：比克氏棉的红花大基斑性状渐渗到陆地棉，并选育出了稳定的红花大基斑陆地棉纯系（ＨＢＲＬ）。报道了这些红花（Ｒ^（ｂｉｃ）_３）大基斑（Ｒ^（ｂｉｃ）_２）陆地棉纯系的遗传连锁实验和连锁分析结果。大基斑（Ｒ^（ｂｉｃ）_２）对小基斑（Ｒ_２）和无基斑（ｒ_２）为显性，Ｒ^（ｂｉｃ）_２与Ｒ_２等位，Ｒ^（ｂｉｃ）_２、Ｒ_２和ｒ_２构成了复等位基因系列。Ｒ^（ｂｉｃ）_２与Ｌｃ_１连锁，Ｒ．Ｃ％＝３７．３１±２．４４．Ｒ^（ｂｉｃ）_２与Ｒ^（ｂｉｃ）_３紧密连锁，并且Ｒ^（ｂｉｃ）_３对Ｙ_１和ｙ_１具有显性上位作用。建议从比克氏棉渐渗到陆地棉的大基斑的基因符号定为Ｒ^（ｂｉｃ）_２，红花瓣的基因符号定为Ｒ^（ｂｉｃ）_３。The character of red petals with a large basal spot was transferred from Gossypium bickii into G. hirsutum L., and the pure lines (HBRL) with the character were obtained by Liang Zhenglan in 1988. Results of genetic analysis for G. hirsutum Pure line of red Petals (R^bic_3) and large basal spot (R^bic_2) were reported in the present study. The large basal spot was dominant to the small basal-spot and spotlessness of G. hirsutum. R^bic_2 was shown to be allelic to R_2 of G. hirsutum, and R^bic_2, D and r_2 were multiple alleles. R^bic_2 was found to be linked with Lc_1,, and linkage between R^bic_2 and Lc_1, was estimated at 37.31±2.44 centimorgans, The red petal (R^bic_3) was epistatic dominance to the yellow petal (Y_1) and cream petal (y_1), and R^bic_3 is closely linked with R^bic_2. It is proposed that the introgressive gene of the large basal spot from G. bickii into G. hirsutum be assigned gene symbol R^bic_2, and the red petals be given the gene symbol R^bic_2.

关 键 词：陆地棉 比克氏棉 渐渗基因 遗传分析 花色基因 

分 类 号：Q943[生物学—植物学]