Abstract:

In order to innovate maize breeding new materials, gradient tropical germplasm populations were constructed according to different proportion of tropical germplasm into temperate germplasm. Using Gradient tropical germplasm populations as test materials, explored the economic traits genetic difference and heterosis potential. The results showed that: the statistical analysis indicated that the main economic traits except bald length difference between the groups was significant, the other characters the differences were highly significant; When the receptor for the Mo17 and 478, respectively, the proportion of tropical germplasm into 50% of Mobai 964 or Mohuang No. 9 groups of major economic traits were better than overall performance, selected excellent comprehensive economic traits and heterosis breeding of new materials and strong potential hybridcrosses.