Selection indices and character association studies in wheat (Triticum aestivum L.) under late sown condition
Soumya Singh, Roshan Parihar, AP Agrawal, HP Agrawal and NK Chaure
The discriminant-function technique was used to create selection indices for 29 wheat genotypes (Triticum aestivum L.) growing under late-sown condition. The discriminant function technique was used to create 31 selection indices based on grain yield (q/ha) and its four components. Increasing the amount of characters in the selection index improves selection efficiency. The selection index based on five characters, that is, grain yield (q/ha), harvest index (%), test weight (1000 kernel wt. in g), number of tillers per plant, and biological yield (q/ha), exhibited highest relative efficiency, with genetic advance of 2619.76% and 17.34, respectively. The correlation coefficient study demonstrated a substantial positive relationship between grain yield (q/ha) and key traits, including test weight (1000 kernel wt. in g), biological yield (q/ha), harvest index (%), flag leaf area (cm2), and number of tillers per plant. Path coefficient analysis further highlighted that harvest index (%), test weight (1000 kernel wt. in g), number of tillers per plant, and biological yield (q/ha) have a significant beneficial direct effect on grain yield.
Soumya Singh, Roshan Parihar, AP Agrawal, HP Agrawal, NK Chaure. Selection indices and character association studies in wheat (Triticum aestivum L.) under late sown condition. Int J Res Agron 2024;7(5):45-48. DOI: 10.33545/2618060X.2024.v7.i5a.686