‘贵丰优998’产量构成因子与产量的相关性及通径分析  

Correlation and Path Analysis of Yield Components with Yield of‘Guifengyou998’

作　　者：姜敬伟 郝留根 杨春苗 易崇粉 张宏伟 王珍珍 王丰[2] 甘雨 Jiang Jingwei;Hao Liugen;Yang Chunmiao;Yi Chongfen;Zhang Hongwei;Wang Zhenzhen;Wang Feng;Gan Yu(Rice Institute,Guizhou Academy of Agricultural Sciences,Guiyang 550006,Guizhou,China;Rice Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,Guangdong,China)

机构地区：[1]贵州省水稻研究所,贵州贵阳550006 [2]广东省农业科学院水稻研究所,广东广州510640

出　　处：《山地农业生物学报》2024年第6期43-46,55,共5页Journal of Mountain Agriculture and Biology

基　　金：优质稻新品种选育与示范应用(黔农科科技创新[2023]09);贵州省水稻现代农业产业技术体系(GZCYTX[2023]-0601)。

摘　　要：为探究杂交水稻‘贵丰优998’高产潜力和途径,本研究利用区试试验数据,对‘贵丰优998’全生育期、株高、穗粒数、有效穗、实粒数、结实率、千粒重、穗长和产量进行了相关分析、回归分析和通径分析。结果表明:产量性状变异系数范围为4.3%~19.9%,其中变异最大的为穗粒数,变异系数为19.9%;最小的为千粒重,变异系数为4.3%。相关性分析表明全生育期、有效穗数和株高与产量达到极显著相关水平。通径分析表明,有效穗数、穗粒数和千粒重三个农艺性状对产量的直接作用较大,通径系数分别为0.992、0.668、0.381。因此,在生产上应用推广及高产创建时,‘贵丰优998’要合理密植,适时施用分蘖肥,通过晒田的方式,保证分蘖力的同时减少无效分蘖,提高有效穗;同时要协调好有效穗(群体)和穗粒数(个体)之间的关系,注重整体有效穗数。研究结果为获得高产奠定基础。To explore the high-yield potential and pathways of hybrid rice‘Guifengyou998’,correlation analysis,regression analysis,and path analysis on the entire growth period,plant height,grain number per panicle,effective panicle,number of full grains,solid grain,panicle length,and yield of‘Guifengyou998’were conducted in this paper using regional trial data.The results showed that the variation coefficient of yield traits ranged from 4.3%to 19.9%,with the largest variation being in the number of grains per ear,with a variation coefficient of 19.9%;the smallest variation being in the thousand-grain weight,with a variation coefficient of 4.3%.Correlation analysis showed that the entire growth period,effective panicle number,and plant height are all significantly correlated with yield.Path analysis showed that three agronomic traits:grains number per panicle,number of effective panicles and thousand-grain weight have a greater direct effect on yield,with path coefficients of 0.992,0.668 and 0.381,respectively.Therefore,when applying and promoting‘Guifengyou998’in production and creating high yields,it is necessary to choose the reasonably densely,irrigate in time,apply sufficient base fertilizer,apply tillering fertilizer at the right time,and use methods such as drying the field to ensure the tillering force while reducing ineffective tillering,to increase the effective panicle.At the same time,it is necessary to coordinate the relationship between the effective panicle and the number of grains per panicle,and focus on the overall effective panicle number to provide a theoretical basis for obtaining high yield.

关 键 词：产量 相关性分析 通径分析 

分 类 号：S511[农业科学—作物学]