玉米杂交种吉单50的产量性状杂种优势分析

Analysis on the Yield Traits and Heterosis of Maize Variety Jidan50

对高产玉米品种吉单50的产量性状杂种优势进行分析。结果表明,吉单50具有显著的增产作用,比对照郑单958、京科968分别增产16.65%和2.60%。产量各性状均具有较高的杂种优势水平,相对杂种优势在2.29%~66.62%,平均28.35%;中亲优势在2.34%~199.58%,平均55.84%;杂种优势指数在102.34%~299.58%,平均155.84%。各性状中以产量的杂种优势最大,相对杂种优势、中亲优势和杂种优势指数分别为66.62%、199.58%和299.58%。其他性状由高到低依次为单株产量、穗位高、行粒数、穗长、株高、轴粗、穗粗、穗行数、百粒重、出籽率和子粒含水量。

Analysis on the yield traits and heterosis of maize variety Jidan50 were analyzed. The results showed Jidan50 had the significant effect of increasing yield. Compared with Zhengdan958 and Jingke968, it increased by 16.65% and 2.60%, respectively. Yield Heterosis of Jidan 50 had a very high level. Relative heterosis ranged from 2.29% to 66.62% with an average of 28.35%. Mid-parent heterosis ranged from 2.34% to 199.58% with an average of 55.84%. Heterosis indexes ranged from 102.34% to 299.58% with an average of 155.84%. Yield Heterosis was the highest among all yield traits. Relative heterosis, mid-parent heterosis and Heterosis indexes were 66.62%, 199.58% and 299.58%, respectively. The sequence of the other traits from high to low was yield per plant, ear height, kernel number per row, ear length, plant height, cob diameter, ear diameter, row number per ear, 100-kernel weight, kernel ratio and grain moisture content.