Stability Analysis of Maize Genotypes According to Different Methods

Abstract

This study was carried out to evaluate the stability and adaptability of maize crop genotypes under four different environmental conditions, of eight inbred lines maize, and their crosses of (Zea mays L.). Four inbred lines (NADH 905, NADH102, NA106, Sara NA) were designated as lines, and four inbred lines (NA 225, NAHD503, ZM12, NAPI5012) were fixed as testers. The data are combined across sites and seasons to perform a joint analysis in order to obtain information that will help breeders to select the best cultivars for different environments. Beyond this, it is essential to understand the different factors that can hamper the selection. According to (El-sahookie, and Al-Rawi, 2011), maximum percentage of stability for kernel yield was 96.61% recorded by the parentNA106, while for genotypic resultant it was 1.067% recorded by the Crosse NA106× NAPI5012. According to Eberhart and Russell (1966), it was found that the cross NADH 905×NAPI5012 was adaptable for kernel yield. According to (Francis, 1977) it was found that the crosses NADH102×NA225, NADH102×NAPI5012, Sara NA×NAHD503, parents NADH 905, and NA225 were good performance and stable for kernel yield