10个油菜品种在凤冈县的产量及品质综合评价OA

To screen high-yield and high-quality rapeseed varieties suitable for the ecological conditions of Fenggang County,Guizhou Province,and to promote quality improvement and efficiency enhancement of the local rapeseed indus-try,ten Brassica napus varieties were selected as study objects.A randomized complete block design was adopted to sys-tematically determine agronomic traits including plant height and effective pod number per plant,yield,and quality indices including protein content,crude fat content,and glucosinolate content.A comprehensive evaluation system was estab-lished using principal component analysis.The results showed significant differences among the ten varieties in some agro-nomic traits,yield,and quality indices.The number of effective pods per plant was identified as the core factor affecting yield(coefficient of variation:23.8％).Nine varieties met the first-class quality standard(oil content ≥ 42.0％)and all vari-eties complied with the'double-low'standard.Principal component analysis extracted five principal components with a cu-mulative contribution rate of 87.835％,based on which a comprehensive evaluation model was constructed with F=0.385F1+0.232F2+0.143F3+0.136F4+0.104F5.The top three varieties in comprehensive ranking were Baoyou210(F=0.708),Qianyoul588(F=0.534),and Qianyoul566(F=0.330).Among these,Baoyou210 was an all-round variety,Qianyou1588 was a high-yield specialized variety,and Qianyou1566 was suitable for oil processing.Qianyou787(F=-0.864)and Youyan1571(F=-0.731)showed poor comprehensive performance.The findings provide a scientific basis for adjusting rapeseed variety layout and optimizing high-yield and high-quality cultivation techniques in Fenggang County.