An Examination of the Use of Trait Association Analysis and Genetic Variation to Identify Quantitative Traits in Indian Mustard (Brassica juncea L.)

Abstract

The experiment was carried out throughout the winter season rabi under irrigated and rainfed conditions to examine the durability of enhanced and high-yielding cultivars of Indian mustard. Variance analysis on 14 characters was performed individually as well as aggregated across years and places. Irrigated environments were better for expressing a larger range of characters and a higher mean for all characters. Days to maturity, plant height, point to first branch, primary branches/plant, secondary branches/plant, point to first siliqua, seed yield/plant, and days to 50% flowering all showed significant G E interaction, indicating a significant amount of predictable G E interaction. All genotypes passed the tests for the three stability parameters and were found to be stable and high yielding. Although genotype were shown to be appropriate for growth in rainfed (poor) conditions despite having greater performance for seed yield/plant. The "genotype" was discovered to be suited for production in an irrigated (beneficial) environment and outperformed the population mean forseed yield/plant. Any breeding plan that aims to create stable, high-yielding genotypes can contain genotypes. For an increase in seed yield per plant, direct selection in the segregating generations of such parents for 1000-seed weight, point to first branch, secondary branches/plant, siliqua length, and overall number of siliquae/plant will be effective (PDF) Stability analysis in Indian mustard.