Manal Othman*(1) Fadi Abbas (2) Entessar Al Jbawi (3) Ahmad AL-Ali (4) and Gaidaa Alesha (5)
(1). Crops Research Administration, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.
(2). Homs Agricultural Research Centre, GCSAR, Damascus, Syria.
(3). Agricultural Extension Directorate, Ministry of Agriculture and Agrarian Reform (MAAR), Damascus, Syria.
(4). Hama Agricultural Research Centre, GCSAR, Damascus, Syria.
(5). AL-Ghab Agricultural Research Centre, GCSAR, Damascus, Syria.
(*Corresponding author: Dr. Manal Othman, E-Mail: manalosman709@gmail.com)
Received: 31/8/2022 Accepted: 24/10/2022
Abstract:
This study focused on estimating the yield stability of sugar beet cultivars in Syria. The data were collected from experimental studies on imported cultivars. Nine cultivars of sugar beet were compared in three main winter-growing regions of Syria in 2021, in randomized complete block design, with three replicates. The effect of locations, location ×cultivar was highly significant (P≤0.001) on root yield, while no significant differences were found among cultivars. Among the cultivars, SM1390 had the highest root yield (66.60 t/ha), followed by MK2832 and Milkos (65.96, 65.96 t/ha respectively), whereas Prestibel had the lowest root yield (52.77 t/ha). The significance of location × cultivar interaction showed that cultivars did not have uniform performance at different locations. Estimation of different stability indices revealed that Milkos had high root yield and stability, while Prestibel and Hospoly were found to be cultivars with low yield and stability. Terios and MK2832 displayed moderate stability. The estimation of the reliability index of root yield for different cultivars indicated that Milkos, had higher reliability than the other cultivars.
Keywords: Genotype-Environment Interaction, Sugar beet, Stability, Root yield.
Full paper in English: pdf