| 江西早杂组合产量构成因素的分析及高产早杂组合选育途径的探讨 |
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| 引用本文： | 肖宇龙,余传元,雷建国,李马忠,旷一相,邱在辉.江西早杂组合产量构成因素的分析及高产早杂组合选育途径的探讨[J].江西农业学报,2007,19(1):21-23. |
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| 作者姓名： | 肖宇龙 余传元 雷建国 李马忠 旷一相 邱在辉 |
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| 作者单位： | 江西省农业科学院,水稻研究所,江西,南昌,330200 |
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| 摘 要： | 应用线性回归分析方法分析了江西省10个高产早杂组合的产量三要素对产量的影响。结果表明,每穗实粒数对产量的影响最大,其次是每公顷穗数,千粒重对产量的影响最小。产量构成各因素间存在一定程度的负相关。在保持现有组合的千粒重的基础上,增加每穗实粒数是提高早杂组合产量的有效途径。提出适应江西生态区域的高产早杂组合的理想形态特征是“中秆,多蘖,大穗”。在早稻保持系品种资源丰富的情况下,选育配合力高的大穗型不育系是早杂高产组合选育的有效途径。
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| 关 键 词： | 早杂组合 产量构成因素 回归分析 相关系数 选育途径 |
| 收稿时间： | 2006-09-21 |
| 修稿时间： | 2006年9月21日 |
Analyses on Yield Components of Early Rice Combination and Discussion on Breeding Approach for High-yielding Hybrid Early Rice in Jiangxi Province |
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| XIAO Yu-long,YU Chuan-yuan,LEI Jian-guo,LI Ma-zhong,KUANG Yi-xiang,QIU Zai-hui.Analyses on Yield Components of Early Rice Combination and Discussion on Breeding Approach for High-yielding Hybrid Early Rice in Jiangxi Province[J].Acta Agriculturae Jiangxi,2007,19(1):21-23. |
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| Authors: | XIAO Yu-long YU Chuan-yuan LEI Jian-guo LI Ma-zhong KUANG Yi-xiang QIU Zai-hui |
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| Institution: | Rice Research Institute, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China |
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| Abstract: | Three yield factors of 10 high-yielding hybrid early rice combinations from Jiangxi province were analysed by using linear regression method.The results showed that the number of filled grains per panicle had the greatest influence on yield,followed by the productive panicles per hectare,the weight of 1000-grain had the lest.Negative correlation existed to some extent among the three yield component factors.On the basis of maintaining 1000-grain weight of the present combinations,increasing filled grains per panicle was an effective approach to elevating the yield of hybrid early rice.The author pointed out that the ideal morphological characters of high yielding hybrid early rice in Jiangxi province should be "medium stem,plenty of tillers and big panicle".Under the circumstances of abundant maintainable line resources for early rice,breeding sterile lines with big panicle and high combining abilities was the effective approach for high-yielding hybrid early rice. |
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| Keywords: | Early hybrid combination Yield components Linear regression analysis Correlation coefficient Breeding method |
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