| Dynamic analysis of QTL for plant height at different developmental stages in maize （Zea mays L.） |
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| 引用本文： | YAN Jianbing1,TANG Hua1,HUANG Yiqin1,SHI Yonggang2,LI Jiansheng 3& ZHENG Yonglian1 1. National Key Lab of Crop Genetic Improvement,Huanzhong Agri-cultural University,Wuhan 430070,China, 2. Xiangfan Chia-Tai Agricultural Development Co.,LTD.,Xiangfan 441104,China, 3. National Maize Improvement Center of China,China Agricultural University,Beijing 100094,China Correspondence should be addressed to Zheng Yonglian (e-mail: yonglian.zheng@263.net). Dynamic analysis of QTL for plant height at different developmental stages in maize （Zea mays L.）[J]. 科学通报(英文版), 2003, 48(23): 2601-2607. DOI: 10.1360/03wc0044 |
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| 作者姓名： | YAN Jianbing1 TANG Hua1 HUANG Yiqin1 SHI Yonggang2 LI Jiansheng 3& ZHENG Yonglian1 1. National Key Lab of Crop Genetic Improvement Huanzhong Agri-cultural University Wuhan 430070 China 2. Xiangfan Chia-Tai Agricultural Development Co. LTD. Xiangfan 441104 China 3. National Maize Improvement Center of China China Agricultural University Beijing 100094 China Correspondence should be addressed to Zheng Yonglian (e-mail: yonglian.zheng@263.net) |
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| 作者单位： | YAN Jianbing,TANG Hua,HUANG Yiqin,ZHENG Yonglian(National Key Lab of Crop Genetic Improvement, Huanzhong Agricultural University, Wuhan 430070, China);SHI Yonggang(Xiangfan Chia-Tai Agricultural Development Co., LTD., Xiangfan 441104, China);LI Jiansheng(National Maize Improvement Center of China, China Agricultural University, Beijing 100094, China) |
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| 基金项目： | 国家自然科学基金,国家重点基础研究发展计划(973计划) |
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| 摘 要： | Plantheightisoneofimportantagronomictraitsinmaizebreeding.Inthepastfewyears,toincreasetheplantingdensityandpreventplantsfromlodging,studiesonthegeneticmechanismofplantheightweregivengreatattentionto.Sincethe1990s,molecularmarkershaveprovidedapowerfultooltostudythetraitofplantheightatthemolecularlevel[1—3].Butmostofresearchforplantheightonlyfocusedondataatmaturestage.Tillnow,about70genesorQTLshavebeenlocated[4].Moreover,somegeneshavebeenevencloned[5—7].Duringthevege-tativegrowthperiod,plant…
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| 关 键 词： | 动力学分析 玉米 植株高度 DNA |
Dynamic analysis of QTL for plant height at different developmental stages in maize (Zea mays L.) |
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| Jianbing?Yan,Hua?Tang,Yiqin?Huang,Yonggang?Shi,Jiansheng?Li,Yonglian?ZhengEmail author. Dynamic analysis of QTL for plant height at different developmental stages in maize (Zea mays L.)[J]. Chinese science bulletin, 2003, 48(23): 2601-2607. DOI: 10.1360/03wc0044 |
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| Authors: | Jianbing?Yan,Hua?Tang,Yiqin?Huang,Yonggang?Shi,Jiansheng?Li,Yonglian?Zheng author-information" > author-information__contact u-icon-before" > mailto:yonglian.zheng@.net" title=" yonglian.zheng@.net" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author |
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| Affiliation: | e-mail: yonglian.zheng@263.net |
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| Abstract: | Plant height in maize is not only one of important agronomic traits, but also one of model traits suitablefor study of developmental biology. Using data from fieldtests in two locations (Wuhan and Xiangfan) within the sameyear and a molecular linkage map covering all of 10 chro-mosomes, QTLs affecting plant height at five different de-velopmental stages were mapped and analyzed by the com-bination of composite interval mapping and the conditionalanalysis method. Eight QTLs for plant height at differentstages were located at different regions of five chromosomes(LOD≥2.5). The results showed that there were differenteffect values of QTL on plant height at different develop-mental stages. Three QTLs were detected at all of five stages.With different stages, contributory percentage of single QTL to plant height varied between 3.8% and 17.1%. It suggestedthat the expression of each QTL controlling plant height wasdifferent at different stages. With net growth, seven condi-tional QTLs for plant height were detected. Conditional QTLs were nearly detected at each stage, and QTLs of Ph1-1, Ph1-2, Ph3, Ph5-2 and Ph9 were detected at both locations (Wuhan and Xiangfan). The contributory percentage of single conditional QTL to plant height varied between 3.8% and 12.3%, indicating that QTLs for plant height are expressed in different time-space. Therefore, QTL expressed at different stages should be considered when marker assistant selection is conducted for quantitative traits. |
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| Keywords: | maize plant height QTL developmental quantitative genetics. |
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