PJB-2018-128
PHENOTYPIC CHARACTERIZATION OF DIVERSE ETHIOPIAN MUSTARD (Brassica carinata) GERMPLASM USING MULTIVARIATE ANALYSIS
Sohail Ahmad Jan
Abstract
Brassica carinata is one of the important Brassica oilseed species that shows maximum agro-morphological based variations. The principal component analysis (PCA) is a valid tool for the selection of best parent and further improvement of breeding program. The present study was conducted to evaluate the genetic variability of diverse elite lines of B. carinata. The data for fourteen agro-morphological quantitative traits were analyzed for PCA and correlation analysis. Our results show that maximum variability was found in first six principal component (PC) groups that contributed 76.20% of overall diversity. Among these PC groups the first PC group account maximum variability (28.54%) as compared to other groups. Among different PC groups the days to flower initiation, days to 50% flowering, days to flower completion, pod length/width, plant height etc. showed maximum variability. Some unique highly diverse genotypes were also screened through scatter plot including Chakwal raya, Bc-701, Bc-702, Bc-707, Bc-709, Bc-711, Bc-740, Bc-778, Bc-880 and Bc-881. All the flowering traits, pod length/width, pods/main raceme, 1000 seed weight showed positive correlation with yield. The diverse screened genotypes will be useful for further improvement of this important Brassica species.
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