| 番茄对番茄晚疫病抗性遗传分析 |
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| 引用本文： | 于海龙,李景富,许向阳.番茄对番茄晚疫病抗性遗传分析[J].东北农业大学学报,2007,38(5):602-605. |
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| 作者姓名： | 于海龙 李景富 许向阳 |
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| 作者单位： | 东北农业大学园艺学院,哈尔滨,150030 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 试验利用04957(感),04968(感),L3708(抗)和Wva700(抗)4个抗感不同的番茄品种,按Griffing(Ⅰ)完全双列杂交方法配置组合,接种番茄晚疫病,调查发病情况进行分析。结果发现:①不同品种、不同组合间抗病性存在极显著差异;②供试品种间一般配合力和特殊配合力存在极显著差异,Wva700,L3708具有较高的一般配合力效应,二者在配制抗性组合时是较为优良的杂交亲本。Wva700×04957,Wva700×04968组合特殊配合力最高,有进一步研究利用的价值;③抗性遗传中加性效应是主要的,同时存在部分显性,存在细胞质效应;④广义遗传力为90.64%,狭义遗传力为81.48%,均较高,说明亲代对后代的影响作用较大,抗性基因可以通过基因累加的方式在后代中表现出来,宜早代选择。
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| 关 键 词： | 番茄 双列杂交 番茄晚疫病 配合力 抗性遗传分析 |
| 文章编号： | 1005-9369（2007）05-0602-04 |
| 修稿时间： | 2006-04-13 |
Genetic analysis of tomato resistance to tomato late blight disease |
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| YU Hailong,LI Jingfu,XU Xiangyang.Genetic analysis of tomato resistance to tomato late blight disease[J].Journal of Northeast Agricultural University,2007,38(5):602-605. |
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| Authors: | YU Hailong LI Jingfu XU Xiangyang |
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| Institution: | College of Horticulture, Northeast Agricultural University, Harbin 150030, China |
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| Abstract: | Four tomato varieties 04957(S),04968(S),L3708(R) and Wva700(R) were selected to study the genetic mechanism.According to complete dialle mating design,inoculated late blight disease races T1,counted the necrotic symptom data and analyzed by Griffing(Ⅰ) respectively to study the combining ability and genetic parameter.The results showed:(1)The phenotypic resistance had significant differences among different varieties and crosses;(2)The differences of general combining ability(GCA) and specific combing ability(SCA) among varieties were obviously significant.Wva700 and L3708 which showed excellent GCA were high value parent for late blight resistant.CrossesWva700×04957 and Wva700×04968 had the highest SCA,and had potential value for utilization study;(3)In the tomato late blight disease-resistant genotype,additive effect was the main effect,part of dominance effect was also existed.Effect of reciprocal cross was obvious,resistance was dominated by nuclear gene and cytoplasm gene;(4)Heritability in the broad(90.64%) and narrow(81.48%) sense were all higher,showing parents had a great influence on progenies.Resistant genes could be expressed in the offspring through gene accumulation,early generation selection was suitable. |
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| Keywords: | tomato dialle mating design late blight disease combining ability resistant analysis |
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