| 甘蓝型杂交油菜收获指数与植株性状的相关分析 |
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| 引用本文： | 戴祥来,赵继献、向阳,张涛,任廷波,程国平. 甘蓝型杂交油菜收获指数与植株性状的相关分析[J]. 中国农学通报, 2018, 34(2): 12-17. DOI: 10.11924/j.issn.1000-6850.casb17030171 |
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| 作者姓名： | 戴祥来 赵继献、向阳 张涛 任廷波 程国平 |
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| 作者单位： | 贵州省油菜研究所,贵州省油菜研究所,贵州省油菜研究所,贵州省油菜研究所,贵州省油菜研究所 |
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| 基金项目： | 贵州省油菜现代农业产业技术体系建设项目(GZCYTX2013-0802)。贵州省农科院自主创新科研专项(黔农科院自主创新科研专项字（2014）014号) |
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| 摘 要： | [目的]为了研究收获指数与植株性状的相关关系及回归关系,[方法]通过测定649个甘蓝型杂交油菜新组合的收获指数、单株产量、株高、千粒重、角粒数、主花序角果长度、单株角果数、有效分枝位、一次分枝数、主序长度。[结果]不同甘蓝型杂交油菜新组收获指数差异较大,变幅为(0.1292-0.3358),平均为22.47%,收获指数在0.30以上的组合仅占0.31%；收获指数与单株产量、角粒数、单株角果数、一次分枝数、主序长度、株高均呈极显著正相关；回归分析表明,株高、单株角果数、主花序角果长度、千粒重、角粒数5个性状对收获指数的影响较大。利用性状间的相关性,选育长角果和主花序长的材料,来提高育成材料的角粒数和千粒重；选育植株相对较高、主花序较长、一次分枝数较多的个体,来提高育成材料的单株角果数,最终育成单株产量较高的组合(或品种)。[结论]协调产量构成三要素,提高单株产量,协调好高产与高收获指数间的关系,育成收获指数较高的组合(或品种)。
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| 关 键 词： | 人工增雨 人工增雨 应急指挥系统 林场火险 Web GIS |
| 收稿时间： | 2017-03-27 |
| 修稿时间： | 2017-05-13 |
Correlation Analysis of Harvest Index and Plant Traits of Hybrid Brassica napus |
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| Abstract: | The paper aims to study the correlation and regression relationship between the harvest index and plant traits. We determined harvest index, yield per plant, plant height, 1000-grain weight, seeds pod, the main inflorescence pod length, pods per plant, effective branch position, first branch number and the main inflorescence length of 649 new combinations of Brassica uapus . The harvest index of different new combinations varied significantly. The amplitude of variation was 0.1292-0.3358, and the average was 0.2247. The proportion of harvest index which was more than 0.30 only accounted for 0.31%. The harvest index showed highly significant correlation with yield per plant, grain number, number of silique per plant, first branch number, length of main inflorescence and plant height. The results of regression analysis showed that five traitsincluding plant height, number of silique per plant, length of main inflorescence, 1000-grain weight and grain number had greater impact on the harvest index. Thus, we can improve grain number and 1000-grain weight of breeding materials by utilizing the correlation among the traits and selecting materials that have longer silique and main inflorescence. In addition, we can select materials which are relatively higher with longer main inflorescence and more branches to improve the number of silique per plant of the bred material, to breed a combination (or variety) with higher single plant yield eventually. |
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| Keywords: | Brassica uapus harvest index correlation analysis plant trait |
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