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作者以前曾设想利用粘果山羊草(Ae.kotschyi)的Sv型细胞质与1BL-1RS染色体互作产生的雄性不育培育杂交小麦(Toriyama等,1991,1993),在此设想中,雄性不育保持系可通过两个渠道获得,即回交法(Nonaka等,1993)和花药培养法.本文报道花药培养的结果。用 1BL-1RS染色体携带者911-B-8-10(简称st.911)与13个日本品种杂交,用 F1及 B1F1植株的花药进行培养,F1的胚形成频率高于亲本(日本品种),B1F1的胚形成频率低于 F1代。st.911和F1代较高的胚形成频率部分地得益于 1BL-1RS染色体.因为抗叶锈病基因Lr位于1RS染色体臂上,所以在再生单倍体植株上人工接种叶锈病菌(21B小种)可以选出抗病个体。用抗叶锈的加倍单倍体与带有1B染色体的(Sv)-中国春和带有1BL-1RS染色体的(Sv)-Saimon杂交,前者的F1表现出较高的自交可育性,而后者的F1表现出完全雄性不育,这说明,通过花药培养获得的抗叶锈病的加倍单倍体系可以用作雄性不育系的保持系。
The authors had previously envisaged breeding male sterile wheat (Toriyama et al., 1991, 1993) using male sterility produced by the interaction of the Sv-type cytoplasm of Ae.kotschyi with the 1BL-1RS chromosome, in which it is assumed that male sterility Retention can be obtained through two channels, Backhaul (Nonaka et al., 1993) and Anther culture. This article reports the results of anther culture. The F1BL and F1F1 plants were cultured with11BL-1RS chromosome carriers 911-B-8-10 (referred to as st.911 for short) and 13 Japanese cultivars. The frequency of F1 embryogenesis was higher than that of the parent (Japanese cultivar) The embryogenesis frequency of B1F1 was lower than F1 generation. st. The higher frequency of embryogenesis in the 911 and F1 generations partially benefits from the 1BL-1RS chromosome. Because the leaf rust resistance gene Lr is located on the 1RS chromosomal arm, resistant individuals can be selected by artificially inoculating leaf rust (21B race) on regenerated haploid plants. F1 hybrids with the 1BL-1RS chromosome with (Sv) -Chinese Spring with 1B chromosome and (Sv) -Saimon with 1BL-1RS were crossed with doubled haploid of leaf rust, the former F1 showed higher inbred fertility, While F1 of the latter showed complete male sterility, indicating that doubled haploid system of leaf rust resistance obtained by anther culture can be used as a maintainer of male sterile lines.