9.The order of 10 traits difference in 96 American breeds is as following: cob weight> ear height >cob weight >TGW >rows per ear >kernel per row >ear diameter >plant height >cob diameter> ear length.

• 96个美国杂交种10个性状差异大小的排列顺序是:穗轴重>穗位高>青苞重>千粒重>穗行数>行粒数>果穗粗>株高>穗轴粗>果穗长。