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本研究在于评价几种提高向小麦远缘杂种染色体组导入异源染色质的可能性方案.以Ph16或N5BT5-与异源种如山羊草属种和黑麦品种的F_1杂交,通过F_1可能的异质联会配对,已经获得了回交1代(BCI)种子.另一方案是通过顶交,即用普通小麦或园锥小麦的杂种F_1,分别再与普通小麦或园锥小麦顶交,以诱导着丝粒断裂及染色体融合.用这种方法已从起初的杂交中成功地获得了预期的衍生系.对这些主要方案也已开始进行改良.杂种后代的异源染色体是通过细胞学、形态学及生物化学标志进行监控的.用这些标志已经帮助获得了具有簇毛麦(Haynaldia villosa)、灯心偃麦草(Agropyron-junceum)以及巨大滨麦草(Elymus giganteus)异源染色体的小麦异附加系.
This study aimed to evaluate the possibility of introducing heterologous chromatin into the distant hybrid genome of wheat.With the F 1 hybrid of Ph16 or N5BT5- and heterologous species such as Aegilops and Rye, Heterologous Union paired, has been back to the first generation (BCI) seeds.Other programs through the top-crossing, that is, using ordinary wheat or coniferous wheat hybrid F_1, respectively, with the top of the general wheat or Cone, To induce centromere rupture and chromosomal fusion. In this way, the expected derived lines have been successfully obtained from the initial crosses and improvements have also been made to these major programs. Heterologous chromosomes of hybrid progeny are detected by cytology, Morphological and biochemical markers that have been used to aid in the identification of wheat heterotic lines with heterologous chromosomes of Haynaldia villosa, Agropyron-junceum and Elymus giganteus .