Statistical analyses
All data were analyzed with an analysis of variance(ANOVA) using the general liner model procedure in SAS
(SAS Institute, 2002). The assumptions of variance analysis were tested by ensuring that the residuals were random and
homogenous, with a normal distribution about a mean of zero. Means were separated using Fisher’s protected least significance difference (LSD) test at the 95% level of probability. Correlation analyses using PROC CORR in SAS
were conducted to determine the relationship between measured parameters and seed yield.