Heterosis Analysis of Yield Characters of Waxy Maize Hybrid Jinuo 3

Abstract TThe heterosis of high yield maize variety Jinuo3 was analysed. The results showed that Jinuo3 had significant yield increasing effect, which was 1.76% and 9.58% higher than Jingkenuo2000 and Wannuo2000, respectively. The relative heterosis of yield traits ranged from 6.57% to~68.41%, with an average of 30.73%. The mid parent heterosis ranged from 7.03% to 216.55%, with an average of 57.83%. And the heterosis index was between 107.03% and 316.55%, with an average of 157.84%. Among the traits, the heterosis of yield was the largest, with relative heterosis, mid parent heterosis and heterosis index were 68.41%, 216.55% and 316.55%, respectively. The other characters ranked from high to low were yield per plant, ear height, and number of grains per row, ear length, plant height, and axis diameter, and ear diameter, row per ear, 100 grain weight, seed yield and threshing water content.