| 山西省中晚熟区玉米穗部相关性状与收获期子粒含水率的多重分析 |
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| 引用本文： | 郭红亮,刘永忠,常海霞,靳鲲鹏,李万星,曹晋军,李丹,李小霞.山西省中晚熟区玉米穗部相关性状与收获期子粒含水率的多重分析[J].作物杂志,2019,35(4):37. |
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| 作者姓名： | 郭红亮 刘永忠 常海霞 靳鲲鹏 李万星 曹晋军 李丹 李小霞 |
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| 作者单位： | 山西省农业科学院谷子研究所,046001,山西长治 |
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| 基金项目： | 山西省重点研发计划(201703D211002-6);山西省农业科学院有机旱作农业研发专项(YCX2017D2404) |
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| 摘 要： | 以山西省中晚熟区大面积推广、生育期基本相同的20个玉米品种为试验材料,对穗部相关性状与收获期子粒含水率进行相关性分析和通径分析。相关性分析结果表明,收获期子粒含水率与穗粗、轴粗、粒厚、苞叶总面积、收获时苞叶含水率呈极显著正相关,与粒宽呈显著正相关,与行粒数呈极显著负相关。通径分析结果表明,对收获期子粒含水率直接作用大小排列为穗行数>穗粗>苞叶含水率=粒厚>轴粗>行粒数>粒宽>穗长>苞叶总面积。因此,要选育收获期子粒含水率低的玉米新品种,应着重选育苞叶总面积小、收获时苞叶含水率低、穗粗与轴粗、子粒厚度薄、子粒宽度窄、行粒数多的基因型。
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| 关 键 词： | 玉米 收获期 子粒含水率 多重分析 |
| 收稿时间： | 2019-01-08 |
Multiple Analysis of Ear Characters and Grain Water Content in Maize Harvest Period in Middle-Late-Maturing Regions of Shanxi Province |
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| Guo Hongliang,Liu Yongzhong,Chang Haixia,Jin Kunpeng,Li Wanxing,Cao Jinjun,Li Dan,Li Xiaoxia.Multiple Analysis of Ear Characters and Grain Water Content in Maize Harvest Period in Middle-Late-Maturing Regions of Shanxi Province[J].Crops,2019,35(4):37. |
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| Authors: | Guo Hongliang Liu Yongzhong Chang Haixia Jin Kunpeng Li Wanxing Cao Jinjun Li Dan Li Xiaoxia |
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| Institution: | Millet Research Institute, Shanxi Academy of Agricultural Sciences, Changzhi 046001, Shanxi, China |
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| Abstract: | In this paper, correlations and path analysis had been done between main ear characters and grain moisture in 20 maize varieties, which have large area popularization and basically the same maturity stages growing at the middle-late- maturing regions of Shanxi province. Correlation analysis showed that grain water content in harvest stage had a significant positive correlation with ear diameter, axis diameter, grain thickness, area of bracts moisture content of bracts, and had a positive correlation with kernel width, but a significant negative correlation with kernels per row. Path analysis showed that main ear characters had direct effects on grain water content in harvest stage, it followed the order of ear rows>ear diameter>moisture content of bracts=grain thickness>axis diameter>kernels per row>kernel width>ear length>area of bracts. Therefore in order to breed a new species with lower moisture content of kernels at harvest stage, we should emphasize on genotypes which have smaller area of bracts, lower moisture content of bracts, slighter ear width and axis diameter, thinner grain thickness, narrower kernel width, and more kernels per row. |
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| Keywords: | Maize Harvest stage Moisture content of kernels Multiple analysis |
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