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| 玉米单倍体诱导系间杂交种评价及其杂种优势分析及其杂交组合选育 |
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徐小炜1,2, 董昕1,2, 黎亮1,2, 刘晨旭1,2, 张艳1,2, 刘文欣1,3, 陈绍江1,2,3
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| (1.中国农业大学农学与生物技术学院, 北京 100193;2.中国农业大学国家玉米改良中心, 北京 100193;3.中国农业大学北京市作物遗传改良重点实验室, 北京 100193) |
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| 摘要: |
| 利用2个诱导系与25个单倍体诱导率呈现梯度变化的材料，采用NCII设计，组配了50个杂交组合，并对其诱导率及农艺性状进行了评价。结果表明，诱导性状的杂种优势不显著，F1代诱导率呈现出接近中亲值或略低于中亲值的特点，但F1的农艺性状较双亲有了显著提升，尤其是在株高、雄穗长度等方面表现出较强的杂种优势。经筛选评价，2个杂交组合诱导率稳定在8.5%以上，可在今后的育种中加以利用。 |
| 关键词: 玉米 单倍体 杂交种 杂种优势 |
| DOI：10.11841/j.issn.1007-4333.2014.04.01 |
| 投稿时间：2013-10-09 |
| 基金项目:国家863计划项目（2011AA10A103）；现代农业玉米产业技术体系（CARS-02-09） |
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| Selection of maize inducer hybrid and heterosis analysis of the hybrid |
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XU Xiao-wei1,2, DONG Xin1,2, LI Liang1,2, LIU Chen-xu1,2, ZHANG Yan1,2, LIU Wen-xin1,3, CHEN Shao-jiang1,2,3
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| (1.College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China;2.Maize Improvement Center of China, China Agricultural University, Beijing 100193, China;3.Beijing Key Laboratory of Crop Genetics Improvement, China Agricultural University, Beijing 100193, China) |
| Abstract: |
| In this study,fifty F1 crosses originated from two inducers and 25 materials with various haploid induction rate (HIR) have been made by the NCII experimental design.All these crosses had been evaluated for the HIR and agronomic performance.The results showed that heterosis for haploid induction trait was not significant.The HIRs for F1 crosses were the same as that of middle parent value or below,but the agronomic performance were significantly improved,especially the plant height and tassel length showed strong heterosis.In this study,we developed two inducer hybrids,with the HIR of approximately 8.5% and a better agronomic performance,which could be used in future haploid induction work. |
| Key words: maize haploid hybrid heterosis |
