Entessar Al Jbawi*(1) Thamer Al Huniesh(1) Zuhair AL Jasem(2) Nahla Al Mahmoud(1) and Hussien Al Zubi(1)
(1). General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria. (2). Der Ezzor Agricultural Research Center, GCSAR, Der Ezzor, Syria. (*Corresponding author: Dr. Entesssar AL Jbawi: firstname.lastname@example.org).
Received: 22/04/2016 Accepted: 15/05/2016
The research was carried out to study the adaptation of 14 commercial monogerm cultivars of sugar beet in three successive years 2009-2011 at major sugar beet producing location in summer sowing time, Deir Ezzor, in Syria, and assess genotype by environment interaction, and to estimate the stability of the varieties performance according to the yield stability statistics (Ysi) for the studied traits of these varieties. A randomized complete block design with four replications was used. Data collected from each experiment were subjected to simple analysis of variance and after homogenization of error variance, combined analysis for four traits including Sucrose content% (SC), Purity % (P ), Root yield (RY ), and Sugar yield (SY ) were carried out. Combined analysis of variance over years, exhibited a significant differences (P≤0.05) between the varieties, indicating genetic differences. Results of yield stability statistics (Ysi) revealed that three of the monogerm sugar beet varieties (Rafal, Agora, and Sherif) were judged as stable for all of the studied traits, during the last three seasons, which is recommended to be planted in summer time in Deir Ezzor region.
Key words: Genotype-Environment Interaction (GEI), Stability analysis, Sugar beet.
Full paper in English: Determining Some Stability Adaptation Parameters for Sugar Beet Commercial Varieties in Summer Sowing