Discriminating Two Seed-Color Groups of Ethiopian Linseed (Linum usitatissimum L. ) Landraces.
2005
Erentna Aka and Hussien Mohammed and Bulcha woyessa and Harjit-Singh
The study was conducted to generate information on the extent of genetic variability between and within brown and yellow seeded groups of linseed (Linum usitatissimum L.) landraces from different regions of Ethiopia. Eighty-one (53 brown an 28 bellow) landraces, were grown at two locations (Kulumsa and Bekoji) following simple lattice design. Data were recorded for 12 agronomic and two quality traits. Two-group discriminant function analysis was employed on the mean value of each trait. Analysis of variance was also performed to estimate parameters of variability within each seed-color group. The mean difference between the two seed-color groups for each trait was tested for statistical significance using the F-ratio. The stepwise discriminant analysis identified oil content, number of primary branches per plant and seed yield per plant as the best discriminator traits for the combined data. Approximately, 74% to 78% of correct classifications were achieved for individual environment and across environments when the best discriminator traits entered together in discriminant analysis to predict the group membership of brown and yellow seeded linseed landraces. The study also showed that brown and yellow seeded Ethiopian linseed landraces are different in oil content, seed yield, thousand seed weight, biomass per plant and number of seeds per pod consistently across the growing environments.
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