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| 利用分子标记辅助选择技术提高玉米对丝黑穗病的抗性 | |
| 引用本文： | 李莉,邢跃先,赵贤容,王丕武,檀国庆.利用分子标记辅助选择技术提高玉米对丝黑穗病的抗性[J].植物保护学报,2012,39(4):303-307. |
| 作者姓名： | 李莉 邢跃先 赵贤容 王丕武 檀国庆 |
| 作者单位： | 1. 吉林农业大学农学院,长春130118／吉林省农业科学院,长春130033 2. 吉林省农业科学院,长春,130033 3. 中国农业大学,北京,100193 4. 吉林农业大学农学院,长春,130118 |
| 基金项目： | 国家"863"计划项目(2008AA10Z151) |
| 摘 要： | 为了探索分子标记辅助选择(MAS)技术在抗玉米丝黑穗病育种中的应用效果,以吉1037为抗源,吉单209的感病母本8902为轮回亲本,回交5代后,自交2代,从BC4F1开始利用MAS技术把感玉米丝黑穗病的亲本8902改良成抗病自交系,并与吉853配制杂交种,对其进行抗病性、产量和农艺性状评价。改良后的8902及其组合,对玉米丝黑穗病的抗性和产量显著提高,且其它农艺性状没有发生改变。抗性以上自交系超过获得材料的80%以上,抗性以上杂交组合超过配制组合的77%以上;改良后亲本组配的杂交种产量较对照明显增加,11个杂交组合增产10%以上,最大增幅可达26.7%。研究表明MAS技术显著提高了自交系及其杂交种对玉米丝黑穗病的抗病效果。 |
| 关 键 词： | 玉米 分子标记辅助选择 丝黑穗病 抗性 |
| 收稿时间： | 2012/2/10 0:00:00 |
Improving head smut resistance in maize by marker-assisted selection technique |
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| Li Li,Xing Yuexian,Zhao Xianrong,Wang Peiwu and Tan Guoqing.Improving head smut resistance in maize by marker-assisted selection technique[J].Acta Phytophylacica Sinica,2012,39(4):303-307. | |
| Authors: | Li Li Xing Yuexian Zhao Xianrong Wang Peiwu and Tan Guoqing |
| Institution: | Jilin Agricultural University, Changchun 130118, Jilin Province, China;Jilin Academy of Agricultural Sciences, Changchun 130033, Jilin Province, China;Jilin Academy of Agricultural Sciences, Changchun 130033, Jilin Province, China;China Agricultural University, Beijing 100193, China;Jilin Agricultural University, Changchun 130118, Jilin Province, China;Jilin Academy of Agricultural Sciences, Changchun 130033, Jilin Province, China |
| Abstract: | In order to study the effects of marker-assisted selection (MAS) in the breeding on the maize head smut resistance. Ji1037 was used as the resistance source, while the susceptible inbred line 8092, one of parents of hybrid Jidan209, was used as recurrent parent backcrossing for five generations. After that self-pollination was done for two generations. The susceptible parent 8902 was converted to resistant inbred lines by MAS and phenotypic selection after BC4F1 made crosses with Ji853, and evaluated for its resistance to the head smut, yield and agronomic traits. The results showed that the convert 8902 and hybrid combinations of disease resistance and yield to head smut increased significantly, and no significant changes were found in other agronomical traits, while resistant lines were converted above 80%, and more than 77% of converted hybrid combinations showed disease resistant, and the yield of convert combinations were increased significantly, 11 hybrid combinations increased yield more than 10% to 26.7%. Taken together, the marker-assisted breeding was an efficient way for improving head smut resistance of maize inbred lines and hybrid. |
| Keywords: | maize MAS head smut resistance |
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