贵丰优785产量与主要农艺性状的相关分析  

Correlation analysis of the yield and main agronomic characters of a new hybrid rice variety,Guifengyou 785

作　　者：蔡源[1] 黄宗洪 甘雨 向关伦 杨占烈 郭慧 潘建慧 龙江辉 CAI Yuan HUANG long-hong GAN Yu XIANG Guan-lun YANG Zhan-lie GUO Hui PAN Jian-hui LONG Jiang-hui(College of Agriculture. Guizhou University, Guiyang, Guizhou, 550025 Guizhou Rice Institute, Guiy- ang, Guizhou, 550006, China)

机构地区：[1]贵州大学农学院,贵州贵阳550025 [2]贵州省水稻研究所,贵州贵阳550006

出　　处：《山地农业生物学报》2016年第5期73-76,共4页Journal of Mountain Agriculture and Biology

基　　金：贵州省水稻产业技术体系建设(GZCYTX2016-0601);水稻种质创新及高效育种与栽培技术体系研究(黔农科院自主创新科研专项字(2014)19号);国家重点研发计划"水稻杂种优势利用技术与强优势杂交种的创制"(2016YFD0101100)

摘　　要：为了探究杂交水稻新品种贵丰优785的高产潜力,利用两年区域试验资料,对8个与产量相关的性状进行了相关性分析及通径分析。相关性分析结果表明:结实率与产量相关性最大,相关系数r=0.4845,达到显著水平。通径分析表明:穗实粒数对产量的直接作用最大,主要农艺性状对产量的直接通径系数的大小依次为:穗实粒数(X6)>穗总粒数(X5)>结实率(X7)>株高(X2)>穗长(X4)>有效穗(X3)>千粒重(X8)>全生育期(X1)In order to explore the ways of achieving high yield of the new hybrid rice variety, Guifengyou 785, eight yield-related traits were evaluated by correlation analysis and path analysis using two years＇ regional experimental data. The correlation analysis results showed that the correlation between the setting rate and yield was the highest with the correla-tion coefficient r= 0. 4845, which is significant. The path analysis results showed that grain number per spike had the greatest direct effect on the yield. The direct path coefficient of yield and main agronomic traits were as follows： grain numbers per spike （ X6） 〉 total grain number per spike （ X5） 〉 setting rate （ X7） 〉 plant height （ X2） 〉 spike length （ X4） 〉 effective spike （ X3） 〉 1000-seed weigh （ by 8） 〉 the whole growth period（ X1） .

关 键 词：贵丰优785 产量 相关性 通径分析 

分 类 号：Q948[生物学—植物学]