以2009-2023年通过江苏省审定的普通玉米品种为材料，分析历年审定情况、主要农艺性状、品质性状、产量性状及其相关性，探明江苏省普通玉米审定品种的特征特性及其演变规律。结果表明，近15年间，江苏省审定105个普通玉米品种，这些品种由省内外39家科研单位和种业公司育成，种业公司育成品种占比63.81%。不同年份间，审定品种的产量、千粒重、穗行数、容重、全生育期、出籽率、株高呈显著或极显著上升趋势，粗脂肪含量呈极显著下降趋势，其他性状基本保持稳定。江苏省审定品种的平均产量水平达8 800.8 kg/hm²，淮南春播组和淮北夏播组审定品种的产量水平相当。相关性分析表明，产量依次与株高、出籽率、千粒重、穗行数、穗位高、容重、行粒数、穗长呈显著或极显著正相关，与粗脂肪含量呈极显著负相关。

To preliminarily explore the characteristics and evolutionary trends of the common maize varieties approved in Jiangsu province from 2009 to 2023, the common maize varieties approved in Jiangsu province were taken as materials in this study, and the certification status, main agronomic traits, quality traits, yield traits and their correlation were analyzed. The results showed that, in the past 15 years, a total of 105 common maize varieties were approved in Jiangsu province, which were bred by 39 scientific research institutions and seed companies, among which the varieties bred by seed companies accounted for 63.81%. Over the years, the yield, 1 000-kernel weight, kernel row number, volume weight, developmental stage, kernel ratio and plant height of the approved varieties showed a significant or extremely significant increasing trend, while the fat concentration showed a very significant decreasing trend, and other traits remained basically stable. The average yield level of the certified varieties in Jiangsu was 8 800.8 kg/ha, with no significant difference between Huainan spring maize area and Huaibei summer maize area. Correlation analysis showed that maize yield was significantly positively correlated with plant height, kernel ratio, 1000-kernel weight, kernel row number, ear height, volume weight, kernel number per row and ear length, while significantly negatively correlated with fat concentration.

S513.031

徐州市重点研发计划(现代农业)项目(KC23125)、江苏省种业振兴揭榜挂帅项目(JBGS[2021]055)、徐州市农科院科研基金项目(XM2023001)