The aim of current research was to understand, the better selection criteria for the maximum production in Brassica napus L. Eight different genotypes were cultivated at Oilseeds Research Farm, Ayub Agricultural Research Institute, Faisalabad , Pakistan during winter 2014-2015. The data was recorded for traits days to 50% flowering, days to maturity, plant height, branches per plant, siliqua len gth, seeds per siliqua, 1000 seed weight, seed yield per plant , silique per plant and seed yield per plot. Mean values, genotypic variance, phenotypic variance, genotypic coefficient of variation, phenotypic coefficient of variation and broad sense heritability were computed . Correlation (genotypic and phenotypic) and path analysis, were also calculated. Seed yield per plant and silique per plant showed highest genotypic and phenotypic variance . Days to flowering had maximum broad sense heritability . Days to flowering, days to maturity, plant height, silique length, seed yield per plant and silique per plant were the main characters which were significantly positive correlated with seed yield per plot in rapeseed. Path analysis showed that siliqua length had a maximum positive direct effect on seed yield per plot in B. napus L. Rapeseed breeders should emphasis on aforesaid positively correlated traits to develop high yielding rapeseed cultivars.
Read the full article in the downloadable PDF.
Download Full PDF