玉米矮秆基因Dt的遗传效应研究

warf maize germplasm resources have significance utilization value in maize breeding. In this study, the materials were obtained from maize dwarf mutant 52333 and it's near-isogenic line crossed with inbred lines of LX9801, C607, C785, S121, zheng58 and chang7-2，respectively. The hybrids were cultivated by planting double line in randomized blocks design with three replications. The results shows that the materials containing Dt gene have a remarkably reduction in plant height and ear height, ranged in 67~112 cm and 34~56 cm, respectively. The research results indicated that Dt gene is generally unfavorable for production with ear length, ear diameter, ear rows, kernel weight per ear and other aspects declined by different degrees.