Genetic Variability Among Advanced Wheat Lines for Yield and Yield Related Traits
Genetic Variability Among Advanced Wheat Lines for Yield and Yield Related Traits
Aizaz Akbar1*, Ijaz Ahmad2, Aftab Jehan3, Imtiaz Ali4 and Muhammad Haris5
ABSTRACT
Wheat, a staple crop in Pakistan is vital for food security and economic stability. A set of 49 advanced wheat lines and one commercial cultivar (Swabi-1) were tested for the estimation of different genetic parameters and association of yield with yield components. Randomized complete block design with triple replications was conducted at the Agriculture Research Station, Swabi during 2021-22. Mean Square values showed substantial variation (p≤0.01) among genotypes for the studied traits. Genotype CIM-47 was observed for early heading, while CIM-39 showed early maturity. Genotype CIM-37 had the longest grain filling duration, while CIM-18 showed the shortest plants. Genotype CIM-10 produced the most productive tillers plant-1, while CIM-36 revealed the longest spikes. Genotype CIM-48 had the highest 1000-grain weight, while CIM-10 and CIM-36 showed the highest grain yield. Heritability and genetic advance as a percentage of the mean were observed to be high for grain filling duration (h2= 0.76, GAM%= 29.20) and grain yield (h2= 0.80, GAM%= 30.21). Grain yield showed substantial positive phenotypic and genotypic association with productive tillers plant-1 and a significant positive phenotypic relationship with days to heading. Wheat genotypes CIM-10 and CIM-36 performed well for grain yield and recommended for future breeding programs.
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