PJB-2019-217
ASSESSING YIELD STABILTY OF WHEAT GENOTYPES THROUGH VARIOUS STABILITY ANALYSIS MODELS GROWN UNDER DIFFERENT AGRO-ECOLOGICAL ZONES OF SINDH
Khalil Ahmed lagahri
Abstract
Twelve advanced wheat genotypes along with commercial check varieites Kiran-95 and NIA-Amber were evaluated for grain yield and stability anlysis at seven different locaion viz Umerkot, Badin, Sakrand, Shahadadpur, Sanghar, Khairpur and Nausheroferoz. The experiment was conducted in RCB design in three replicates at seven different location of Sindh province of Pakistan.Mean grain yield data shows that Genotypes G4 (NIA-EST-28/11), G3, (AS-3) G5 (NIA-EST-92/9), G1 (AS-1) and G13 (check variety Kiran-95) respectively produced higher mean grain yield than other contesting genotypes across seven eclogical zones.Various stabilty analyis which includes parmetric and non parmetric stabilty anlysis techniques were performed. Results revealed that out 11 models studied G2, G6 were decalred as stable by 8 models and G11 and G14 by 7 models. Results of coeffiecient of determination (CV%,), deviation from regression(S2di),coefficients of determination (R2), stability variance (ri2) ,Desirabiltiy index (DJi), ecovalance (Wi2 ), stabilty models such as Si(1) genotypic variance(Si2 were very closely similar in decalring genotypes as stable. However,the regression coefficient (bi) and Superiority index (P i )modle picked high yielding genotypes as stable, this indicates that model for high yielding and low yielding genotypes may be assessed seprately to further confirm findings.
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