GENOTYPIC STABILITY FOR SOME BREAD WHEAT PURE LINES

Abstract

The objective of this research to evaluate a genotypic stability for new developed wheat pure lines (Triticum aestivum L.). A crossing program among six wheat genotypes; Alfateh, A.3031, M2, IPA99, A4.10 and Abu-Ghraib3, were crossed during 2001-2002, using half diallel method and developed 15 crosses. A single plant selection was used during six seasons. The parents and some selected crosses (S12 , S52 , S76 , S83 , S94 , S97 , S102 , S118 , S123 , S130 , S148 , S152 , S155 , S175 , S177), were evaluated during five years (2009-2014), using randomized complete block design .The results were analyzed using analysis of variance and some statistic parameters SD, SE and CV, joint regression method also, adopted to evaluate the stability of genotypes through five environments , for grain yield and it's components. A significant differences were found among genotypes , environments and GxE interaction in all the traits . The highest grain yield 5981 kg.ha-1 produced from the genotype S123. The statistical analysis revealed that S155 had highest grain yield stability. While joint regression method showed that, S130 had higher stability and S155, S152, and S118 were a promising stable and high productive genotypes and the genotype S123 was more adapted to favorable environment.