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本研究对红秃头和霸王鞭两个小麦农家种抗白粉病基因推导显示,红秃头和霸王鞭均具有较宽的抗性谱,是良好的抗源品种,并可能携带新的抗病基因。抗白粉病遗传分析表明,红秃头对E09的抗性由1对显性基因控制,对E26和E30-2的抗性分别由1对隐性基因控制,其至少携带一显一隐2对抗白粉病基因;霸王鞭对E09的抗性由2对显性基因重叠或者独立控制,对E26的抗性由2对显性基因互补作用控制,对E30-2的抗性由1对显性基因控制,其至少携带2对显性基因。利用基因芯片结合集群分离分析法(Bulk Segregant Analysis,BSA)进行染色体定位推测出,红秃头的抗白粉病基因可能位于染色体7B和6B上,霸王鞭的抗白粉病基因可能位于染色体4A和7B上。
In this study, we deduced the resistance gene of powdery mildew from two red wheat cultivars such as Bald and Baldwur. The results showed that both red bald and Bawang were broad resistant spectrum, which was a good anti-source species and might carry new resistance gene. Genetic analysis of resistance to powdery mildew showed that the resistance of red bald to E09 was controlled by one pair of dominant genes and the resistance to E26 and E30-2 was controlled by one pair of recessive genes respectively, The resistance of Eupatorium lanceolata to E09 was controlled by two dominant genes overlapping or independently. The resistance to E26 was controlled by two pairs of dominant genes. The resistance to E30-2 was controlled by one pair of dominant genes. It carries at least two pairs of dominant genes. Chromosomal mapping using the gene chip combined with Bulk Segregant Analysis (BSA) suggested that the reddish-bald powdery mildew resistance genes may be located on chromosomes 7B and 6B, and the potential resistance to powdery mildew of King Wang whip may be located on chromosomes 4A and 7B.