| 微胚乳超高油玉米主要性状的通径分析 |
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| 引用本文： | 奉志高, 吴子恺, 赵刚, 王兵伟.微胚乳超高油玉米主要性状的通径分析[J].玉米科学,2007,15(1):037-040. |
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| 作者姓名： | 奉志高 吴子恺 赵刚 王兵伟 |
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| 作者单位： | 广西大学农学院,南宁,530005 |
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| 基金项目： | 广西大学校科研和教改项目;教育部离校博士学科专项科研基金 |
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| 摘 要： | 按Griffing双列杂交方法Ⅳ,用6个微胚乳超高油玉米自交系配制了15个组合,对亲本及其杂交组合主要性状的特征特性和通径系数进行了分析。结果表明:大多数性状存在超亲优势;各性状对单穗粒重的直接贡献大小依次为穗粗>穗长>叶片数>百粒重>穗行数>株高,其中穗粗对单穗粒重起主要作用;各性状对成熟期子粒含油率的直接贡献大小依次为胚重比>成熟期蛋白质>乳熟期可溶性糖>单穗粒重>百粒重>胚油比,其中胚重比对成熟期子粒含油率起主要作用。
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| 关 键 词： | 玉米 微胚乳 超高油 通径系数 |
| 文章编号： | 1005-0906（2007）01-0037-04 |
| 收稿时间： | 2006-06-20 |
| 修稿时间： | 2006年6月20日 |
Path Coefficient Analysis of Main Characters in Micro-endosperm Super-high Oil Maize |
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| FENG Zhi-gao; WU Zi-kai; ZHAO Gang; WANG Bing-wei.Path Coefficient Analysis of Main Characters in Micro-endosperm Super-high Oil Maize[J].Journal of Maize Sciences,2007,15(1):037-040. |
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| Authors: | FENG Zhi-gao; WU Zi-kai; ZHAO Gang; WANG Bing-wei |
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| Institution: | Agronomy College, Guangxi University, Nanning 530005, China |
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| Abstract: | By the method of Griffing IV,with six inbred lines of micro-endosperm super-high oil maize,fifteen combinations were made to study the characteristics and path coefficient of main characters.Main results were that over-parent heterosis was found on most of characters.The contributions of six characters to kernel weight per ear were ear diameter > ear length > number of leaves > 100-kernel weight > kernel row > plant height.The ear diameter was dominant in affecting kernel weight per ear.The contributions of six characters to kernel percent oil during maturing period were embryo weight ratio>kernel protein content during maturing period > kernel soluble sugar during milking period > kernel weight per ear > 100-kernel weight > embryo oil ratio.The embryo weight ratio was dominant in affecting kernel percent oil during maturing period. |
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| Keywords: | Maize Micro-endosperm Super-high oil Path coefficient |
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