Abstract: The relation between plant height, ear height, stamen length, stem diameter, leaf number above the ear and grain weight in 150 individuals of American BSSS maize populations was analyzed. Inbred lines 478 was used as a control line, individuals with each character superior to control line were found out and among them individuals with higher grain weight than the control accounted for 78.27%. There were 18 individuals whose all characters were superior to control line. The direct effect of ear height on yield per plant was greater positive effect. The indirect effect of ear height on yield per plant was greater positive effect. The effect of stamen length on yield per plant was negative effect. The results indicated that it was a potential way to get a progeny with high yield though self-bred of individuals with appropriate higher ear and appropriate shorter stamen.

Key words: maize, BSSS populations, correlation analysis