| 长江中下游杂交油菜主推品种株型特性与产量性状相关分析 |
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| 引用本文： | 郭一鸣,王同华,曲亮,陈卫江,李莓.长江中下游杂交油菜主推品种株型特性与产量性状相关分析[J].中国农学通报,2020,36(22):13-18. |
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| 作者姓名： | 郭一鸣 王同华 曲亮 陈卫江 李莓 |
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| 作者单位： | 湖南省作物研究所,长沙 410125 |
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| 基金项目： | 湖南省农业科学院创新项目“甘蓝型油菜耐渍机理研究与品种筛选”(2018NQ17);现代农业产业技术体系建设专项国家油菜产业体系(CARS-12);湖南省农业科学院创新项目“油菜机械化品种选育及高效生产与加工技术研究与示范”(2019YC02) |
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| 摘 要： | 针对特定油菜品种进行多区域多年份的数据分析,以期更好地揭示油菜株型特性与产量性状相关关系。选择近10年间长江中下游广为应用的5个优质杂交油菜代表性品种,以长江中下游国家新品种区域试验数据为依据,分析各品种在特定区域、不同年份的主要株型特点及产量相关因子的相关关系。5个品种的株型均符合高产品种特点,其分枝高度占比平均为0.34~0.39,主花序长占比0.34~0.37,且品种间不存在差异,表现出角果层密度与单株产量和小区产量均呈极显著正相关（相关系数分别为0.64和0.22）。另一方面,虽然长江中、下游两个种植区产量及株型等其他性状普遍存在显著差异,尤其是随着种植密度的提高,株高、分枝起点和角果层密度均发生极显著改变,但年度间小区产量差异并不显著。跟踪并分析多年多环境下高产品种的株型性状变化及产量表现,可为优质高产品种培育提供更有效的试验依据与理论参考。
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| 关 键 词： | 杂交油菜 理想株型 区域试验 产量因子 |
| 收稿时间： | 2019-06-17 |
Plant Architecture and Yield-related Traits of Main Hybrid Rapeseed Varieties in the Middle and Lower Reaches of the Yangtze River: Correlation Analysis |
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| Guo Yiming,Wang Tonghua,Qu Liang,Chen Weijiang,Li Mei.Plant Architecture and Yield-related Traits of Main Hybrid Rapeseed Varieties in the Middle and Lower Reaches of the Yangtze River: Correlation Analysis[J].Chinese Agricultural Science Bulletin,2020,36(22):13-18. |
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| Authors: | Guo Yiming Wang Tonghua Qu Liang Chen Weijiang Li Mei |
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| Institution: | Hunan Crop Research Institute, Changsha 410125 |
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| Abstract: | By analyzing field data for specific rapeseed varieties from multiple regions and years, we aim to reveal the relationship between plant architecture and yield-related factors. Five widely applied varieties in the past ten years were chosen in the middle and lower reaches of the Yangtze River, their field data from National Winter-type Rapeseed Regional Trials were used to analyze the characteristics and correlation relationships of plant architecture and yield-related traits within regions in different years. The plant architecture of five varieties all fit the criteria of high-yield type, with the branch height proportion of 0.34-0.39, and the main inflorescence proportion of 0.34-0.37, while no difference was observed among the varieties for these two factors. Silique layer density was extremely and positively correlated with plant yield and plot yield, with 0.64 and 0.22 as the correlation coefficient value, respectively. On the other hand, significant differences were commonly found in most yield and architecture-related traits between the middle and lower reaches of the Yangtze River, especially after the increase of growth density, the plant height, branch height and silique layer density all varied extremely and significantly, but not for plot yield. The analyzed results from long-term data in multiple regions could provide a more solid foundation for the selection of new-hybrid varieties in the future. |
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| Keywords: | hybrid rapeseed ideal plant architecture field trials yield-related factors |
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