Mohamed Baker Alabd Alwahed *⁽¹⁾, Oula Kaso ⁽¹⁾, Thamer Alhenish ⁽¹⁾, Zainab Tadbeer ⁽¹⁾, and Khaled ALshreda ⁽¹⁾

(1). Crops Research Administration, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.

(*Corresponding author: Eng. Mohamed Baker Alabd Alwahed. E-Mail: Baker963949351833@gmail.com).

Received:2/09/2021                         Accepted:8/03/2022

Abstract: 

Twelve genotypes of Durum Wheat (Triticum durum L.) were tasted in four locations in zone B, during the 2019-2020 season to evaluate  these genotypes and study the Genotype × Environments interactions, and stability performance across environments using statistical measures of stability: {(X¯_i), (b_i), (S²d_i) according to Eberhart and Russell (1966), Stability Variance Index (σ²_i) according to Wricke and Weber (1980) (Shukla), Ecovalance Stability Index (W_i) according to Wirckle (1962), Coefficient of Determination (r²_i) according to Pinthus (1973), and Coefficient of Variation (C.V) according to Francis}. The experiment was designed using randomized complete block design (RCBD) with three replications, statistical data analysis was done, and least significant difference (L.S.D) test at 5% was applied for comparison of means, and showed significant mean squares due to genotypes (G), and genotypes × environments interaction (E×G), which reveals the importance of stability analysis for grain yield. Stability analysis for grain yield revealed that; both varieties (Bohouth 7, Douma 1) were more stable than other genotypes in the first environmental area. Due to they had superior ranks for both average yield over environments and yield stability. While the variety (Douma 3) showed tolerance and stability in drought conditions. Which reveals the importance of these varieties that combine relatively high yield and better stability in any future breeding programs.

Keywords: Durum wheat, Genotype by Environment Interactions, Yield Stability, Coefficient of Determination.

Full paper in Arabic: pdf