| 黔东南冷凉山区优质稻农艺性状的相关性及通径分析 |
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| 引用本文： | 潘宗东,张金明,杨桂兰,宋一江,石细敏.黔东南冷凉山区优质稻农艺性状的相关性及通径分析[J].安徽农业科学,2012,40(26):12814-12815,12819. |
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| 作者姓名： | 潘宗东 张金明 杨桂兰 宋一江 石细敏 |
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| 作者单位： | 贵州省黔东南州农业科学研究所,贵州凯里,556000 |
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| 基金项目： | 黔东南冷凉山区水稻超高产应用研究与示范[黔省专合字(2010)105];黔东南州“十一五”优质稻种质资源创新项目 |
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| 摘 要： | 目的]研究12个优质水稻(Oryza sativa L.)品种在黔东南冷凉山区主要农艺性状的相关性及通径分析。方法]12个品种分别为临籼22、凉籼3号、德双4号、香稻82、香米德优8号、临籼22、中籼2503、中香1号、鉴真2号、昌米016、鄂中5号、滇屯502(CK)。采用随机区组试验设计,3次重复。每小区从第2行的第2株开始收取10个单株进行考种,考种项目包括株高、穗长、有效穗、总粒数、实粒数、千粒重、结实率及产量。结果]实粒数与实际产量呈极显著正相关,相关系数为0.583 1,有效穗、总粒数和结实率与实际产量呈显著正相关,相关系数分别为0.255 4、0.548 9、0.355 2;而千粒重和穗长与产量呈显著负相关,相关系数为-0.179 0、-0.555 8。对实际产量直接贡献最大的是有效穗,通径系数为1.470 1,其次是总粒数(0.643 3)、千粒重(0.627 4)、实粒数(0.492 6)、结实率(0.208 4)。结论]黔东南冷凉山区在选择品种和推广中要以株高适中、大穗粒多、分蘖适中为主攻目标。
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| 关 键 词： | 优质稻 农艺性状 相关性 通径分析 |
Correlation and Path Analysis of the Agronomic Traits of Good Quality Rice in Cold Mountain Area of South East Guizhou |
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| Institution: | PAN Zong-dong et al(Guizhou Southeast Institute of Agricultural Agricultural Sciences,Kaili,Guizhou 556000) |
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| Abstract: | Objective] The purpose was to study the correlation and path analysis of 12 main agronomic traits of good quality rice in cold mountain area of south east Guizhou.Method] Twelve rice varieties were Linxian 22,Liangxian No.3,Deshuang No.4,Sweet rice 82,Sweet rice Deyou No.8,Linxian 22,Zhongxian 2503,Zhongxiang No.1,Jianzhen No.2,Changmi 016,Ezhong No.5,Diantun 502(taking as control) respectively.The randomized block design was used with 3 repeated.Ten plants each plot were collected from beginning of the second plant of the second row,and observation items included plant height,panicle length,effective panicle,total grain number per panicle,filled grain number,1 000-grain weight,setting rate and yield.Result] There was very positive significant correlation between filled grain number and real yield and the correlation coefficient was 0.583 1,effective panicle,total grain number per panicle and setting rate had positive significant correlation with real yield and the correlation coefficient was 0.255 4,0.548 9 and 0.355 2 resp..1 000-grain weight and panicle length had negative significant correlation with real yield and the correlation coefficient was-0.179 0 and-0.555 8 resp..The index that the direct contribution to real yield was the biggest was effective panicle and the direct path coefficient was 1.470 1,followed by total grain number per panicle,1 000-grain weight,filled grain number and setting rate and the direct path coefficient was 0.643 3,0.627 4,0.492 6 and 0.208 4 resp..Conclusion] The main goal was choosing moderate plant height,big panicle and more grain,moderate tillering number when choosing varieties and popularization in cold mountain area of south east Guizhou. |
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| Keywords: | Good quality rice Agronomic traits Correlation Path analysis |
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