Genetic Parameters Estimation of Promising Maize Hybrids in Sundarbazar, Lamjung

Strategic Insights -

Research conducted at Tribhuvan University in Nepal has evaluated the genetic parameters of promising maize hybrids. The study, which took place in the farmer's field of Sundarbazar, Lamjung, aimed to examine genetic variability, heritability, genetic advance, and character association for yield and yield-contributing traits. The research found significant differences for seven quantitative traits studied and identified the traits with high heritability and genetic advance as candidates for improvement through selection. The findings suggest the presence of additive gene action favoring the selection of traits for crop improvement.

Key Takeaways:

  • The study evaluated 12 promising hybrid maize genotypes in a Randomized Complete Block Design (RCBD) with three replications in the farmer's field of Sundarbazar, Lamjung during March-July, 2022.
  • Significant differences were observed for seven quantitative traits studied, including grain yield, days to 90% maturity, ear length, and ear weight.
  • Correlation studies revealed positive and significant correlation between grain yield and days to 90% maturity, ear length, and ear weight.
  • High heritability and genetic advance were recorded for traits such as grain yield, plant height, ear height, and days to 90% maturity.
  • The study highlights the importance of additive gene action in favoring selection for crop improvement.
  • The research has implications for maize breeding programs, particularly in the Sundarbazar, Lamjung region.

Statistics:

  • The study was conducted with 12 promising hybrid maize genotypes.
  • The experiment was carried out in a Randomized Complete Block Design (RCBD) with three replications.
  • Significant differences were observed for seven quantitative traits studied.
  • High heritability was recorded for traits such as grain yield (0.81), plant height (0.86), ear height (0.87), and days to 90% maturity (0.85).
  • High genetic advance per mean was recorded for grain yield (14.25) and ear aspects (12.15).
  • The study highlights the importance of additive gene action, with 0.85 and 0.86 R2 values for grain yield and days to 90% maturity, respectively.

Sources:

  • Genetic Parameters Estimation of Promising Maize Hybrids in Sundarbazar, Lamjung. Agricultura, 2025, 134(1-2):174-182.
  • NewsRx. Research on Agriculture Detailed by Researchers at Tribhuvan University (Genetic Parameters Estimation of Promising Maize Hybrids in Sundarbazar, Lamjung). Life Science Weekly. August 12, 2025; p 5185.