直接导入农林10号矮秆基因于八倍体小黑麦的研究

Introducing Dwarfing Gene Rht1 or/and Rht2 of Norin 10 Common Wheat into Octoploid Triticale by Direct Crossing

用杂交、回交方法,将农林10号的矮秆基因导入八倍体小黑麦Y1139F_7中。和预期的一样,在不涉及R组染色体重组的情况下,导入后的八倍体小黑麦种子饱满度并未下降,还略有提高。这是利用直接导入法导入普通小麦有利基因于八倍体小黑麦的第一个实例.为“未经改良的R组染色体对八倍体小黑麦的种子饱满度有干扰作用”提供了间接的证据。

The dwarfing gene Rht1 or/and Rht2 in the common wheat cultivar Norin 10 was introduced into the advanced line of octoploid triticale Y1139F7 by direct crossing and back-crossing. As expected, the grain plumpness of newly selected triticale plants with dwarfing gene was better than that of the parental triticale line Y1139F by half grade on average. This provides an indirect evidence of the detrimental effect of raw R genome on the grain plumpness of octoploid triticale as shown in the primary strains.