玉米自交系和杂交种抗茎腐病鉴定及其间抗性遗传关系的研究

来源 :玉米科学 | 被引量 : 0次 | 上传用户:xinxinrenren
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
1989~1993年利用当地主要致病菌──禾生腐霉菌和禾谷镰刀菌的新鲜菌剂,采用伤根法对436份自交系和53份杂交种进行了人工接菌试验及其杂交种与自交系间抗性遗传关系的研究。结果表明:同亲缘的姊妹系对玉米茎腐病的抗性表现基本相同,利用含有一个高抗亲本的二环材料不一定能选出高抗新品系来,而应用含有两个抗病亲本的二环材料却易育成高抗系;玉米自交系对茎腐病的抗性与对其它病害的抗性无“拮抗”作用,杂交种F1代对茎腐病的抗病指数一般表现出优于其双亲平均抗病值;杂交种F1代对茎腐病的抗感病性多趋向于母本的抗感病性。 From 1989 to 1993, 436 inbred lines and 53 hybrids were inoculated by fresh wounds of the main pathogenic bacteria in the world, Pythium sp. And Fusarium graminearum, and their hybrids Study on Genetic Relationship Between Resistance and Inbred Lines. The results showed that the sister lines of the same relatives had basically the same resistance to stalk rot of maize, and the use of the bicyclic material containing a high resistant parent could not necessarily select the highly resistant new line. However, The second ring material was easy to become a high resistance line; corn inbred lines to stem rot resistance and resistance to other diseases without “antagonism”, F1 hybrids on stalk rot disease resistance index generally showed excellent The average resistance value of their parents; hybrid F1 hybrids on stalk rot resistance and susceptibility to the female parent more susceptibility.
其他文献
近来,本刊接到作者反映,有人冒用《现代商业》杂志社及编辑部名义开设邮箱组稿,同时我们在一些网站上夜发现有冒用杂志社名义的征稿信息,并向作者收取高额版面费。事实上,其
本文研究水稻和大麦的根系脱氢酶活性,结果表明,根系脱氢酶活性与水稻秧苗素质和稻麦产量有一定相关关系. In this paper, the root dehydrogenase activities of rice and