湖南农业科学Issue(2)：16-23,8.DOI:10.16498/j.cnki.hnnykx.2026.002.004
湘审甜玉米品种农艺性状与鲜穗产量的灰色关联度分析
Grey Correlation Analysis Between Agronomic Traits and Fresh Ear Yield of Sweet Maize Varieties Approved in Hunan Province
摘要
Abstract
This study aimed to investigate the relationships between major agronomic traits and fresh ear yield of sweet maize varieties approved in Hunan Province.Twenty-seven sweet maize varieties approved in Hunan Province from 2003 to 2024 were studied.Linear regression analysis,grey correlation analysis,and correlation analysis were employed to evaluate the relationships between agronomic traits and yield.The results were summarized as follows:(1)The fresh ear yield exceeded 850 kg/667m2 in 51.85%of varieties.The field lodging rate and ear breakage rate exhibited a decreasing trend over the years,while the sugar content increased.(2)The growth period,plant height,ear height,ear length,ear diameter,and rows per ear showed increasing trends in all the 27 varieties,with the mean values during 2020-2024 increasing by 4.1%,14.9%,27.7%,0.8%,6.6%,and 0.3%,respectively,compared with those during 2003-2010.(3)Grey correlation analysis revealed the following ranking of correlations between fresh ear yield and agronomic traits:bare tip length(0.78)>rows per ear(0.75)>ear length(0.73)>kernels per row(0.71)>ear diameter(0.68)>fresh hundred-kernel weight(0.67)>fresh kernel yield(0.66).(4)Correlation analysis revealed that fresh kernel yield had significantly negative correlations with bare tip length and fresh ear yield and a significantly positive correlation with fresh hundred-kernel weight.Therefore,in sweet maize breeding in Hunan,attention should be paid to bare tip length,rows per ear,and ear length to improve the fresh ear yield.关键词
甜玉米/鲜穗产量/农艺性状/灰色关联度分析/品质Key words
sweet maize/fresh ear yield/agronomic traits/grey correlation analysis/quality分类
农业科技引用本文复制引用
刘佳惠,莫佳梅,彭雨情,李薇,慕俊然,朱亚男,罗红兵..湘审甜玉米品种农艺性状与鲜穗产量的灰色关联度分析[J].湖南农业科学,2026,(2):16-23,8.基金项目
湖南省重点研发计划(2022NK2002) （2022NK2002）
