Correlation and Principal Component Analysis of Quality Traits of Rice Under Mulched Drip Irrigation
ZHU Jiangyan
WANG Shengyi
HAO Yufeng
LI Li
YANG Jiakang
ZHAO Shuangling
KE Luyao
LI Gaohua
Abstract：To provide reference for variety selection and quality improvement of rice under mulched drip irrigation,this study analyzed 11 main quality traits using 25 rice varieties(lines)as materials.The results showed that there were significant differences in quality traits among different varieties,with coefficients of variation of chalkiness,chalky grain rate,transparency,and head rice rate exceeding 20％(chalkiness and grain rate exceeding 59％).There is a correlation between traits,such as a significant positive correlation between milled rice rate and brown rice rate(r=0.637),a significant positive correlation between head rice rate and grain length(r=0.815),and a significant negative correlation between protein and amylose(r=-0.901),as well as taste value(r=-0.881).Principal component analysis showed that the total variance contribution rate of the first three principal components reached 82.486％,with the first principal component(taste factor)contributing 33.940％,the second principal component(grain size factor)contributing 25.571％,and the third principal component(rice milling quality factor)contributing 22.975％.Therefore,in variety breeding,the chalky grain rate and chalkiness should be reduced on the basis of stable milled rice rate,and the amylose content should be appropriately increased to enhance palatability,in order to achieve the breeding goal of improving rice quality.
Keywords：RiceDrip irrigationQuality traitsCorrelationPrincipal component analysis
Publication Date：2025-04-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 15-19 )