玉米新品种安玉308产量性状杂种优势分析

Analysis on the Yield Traits and Heterosis of New Maize Variety Anyu 308

对玉米新品种安玉308产量性状及其杂种优势进行分析。结果表明,安玉308具有较高增产潜力,与对照郑单958和先玉335相比分别增产7.85%和10.08%。杂种优势分析结果显示,安玉308的多数产量性状均具有较高杂种优势水平,其中相对杂种优势在-12.02%~68.12%,平均21.42%;中亲优势在-0.73%~213.71%,平均52.49%;杂种优势指数在89.27%~313.71%。各性状中产量性状杂种优势最高,收获时含水量最低,其他性状杂种优势由低到高依次为出籽率、百粒重、轴粗、穗粗、穗行数、穗长、行粒数、秃尖长。

The yield traits and heterosis of new maize variety Anyu 308 were analyzed.The results showed that Anyu 308 had high yield potential.Compared to Zhengdan 958 and Xianyu 335,the yield of Anyu 308 increased by 7.85%and 10.08%,respectively.Heterosis analysis showed that the most yield heterosis of Anyu 308 had high level.Relative heterosis ranged from-12.02%to 68.12%,with an average value of 21.42%.Mid-parent heterosis ranged from-0.73%to 213.71%with an average value of 52.49%.Heterosis index ranged from 89.27%to 313.71%.Among all traits,the yield traits had the highest heterosis and the water content was the lowest,the heterosis of other traits from low to high were in the order of seed yield,100-kernel weight,cob diameter,ear diameter,ear row,ear length,kernel per row,and bald tip length.