GENETIC DIVERGENCE AND HETEROSIS IN LINSEED (Linum ussitatissimum L. ) | ||||
| Journal of Plant Production | ||||
| Article 12, Volume 2, Issue 2, February 2011, Page 335-349 PDF (565.77 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2011.85527 | ||||
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| Authors | ||||
| A. A. Kandil1; A. E. Sheraif1; T. A. Abo-Zaied2; A. Gamil2 | ||||
| 1Agronomy Dept., Fac. of Agric., Mansoura University. | ||||
| 2Fiber Crops Res. Sec., Agric. Research Center, El-Gemmiza. | ||||
| Abstract | ||||
| Cluster analysis can be used to identify cultivars with similar adaptation, which can be useful for sampling in subsequent studies and parental selection in hybridization breeding programs Twenty-one flax genotypes differed in their origin and purpose were used in this study. Sixteen agronomic and yield characters were evaluated. Analysis of variance revealed significant differences for all studied characters indicating the presence of considerable amount of genetic variability. The variation due to parents, crosses were also significant for presence of most characters. Parents vs crosses were significant for most characters, indicating the heterotic effects. Significant positive heterosis over mid-Parents, better parent and commercial cultivars were observed for seed yield/fed, number of apical branches/plant and number of capsules/plant. The crosses exhibited heterosis for seed yield also showed significant heterosis for most yield components characters. The cross combination Sakha 3 x Gowhar surpassed all genotypes for oil content. The 85% of dissimilarity coefficients were significant. The Twenty-one parents were grouped into seven major groups based on relative dissimilarity among them with significant differences between groups for most characters. The maximum distance observed between cluster V and VII, whereas the minimum distance between cluster III and VI. The forty one genotypes were grouped into ten clusters, while most F1 combinations were distributed on seven differed clusters indicating that the progeny produced from crossing between two distantly related parents showed divergent distance and gave values surpassed their parents in most characters. | ||||
| Keywords | ||||
| Genetic divergence; heterosis; linseed | ||||
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