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Patterns of morphological diversity in relation to geographical origins of wild Lupinus angustifolius from the Aegean region

Patterns of morphological diversity in relation to geographical origins of wild Lupinus angustifolius from the Aegean region

Genetic Resources & Crop Evolution 41(2): 109-122

Patterns of morphological diversity were examined in relation to geographical origins of 157 accessions of wild Lupinus angustifolius from the Aegean region using multivariate techniques. Genetic diversity was extremely large for most morphological traits, with significant variation detected among localities in Greece and within and between collection sites for some traits. Canonical variates and correlation analysis showed that early flowering, tall and large-seeded accessions were associated with warm winters and drier climates in southern Greece. Thirteen groups of accessions were identified by hierarchical cluster analysis of 19 morphological traits, accounting for 81% of genotype and 41% of genotype times trait sums of squares. The distinguishing features of these groups were clarified by principal coordinates analysis. Two groups, with very desirable agronomic characteristics, originated from the Dhodhekanisos Islands (Kos, Leros, Patmos) in the south-eastern Aegean: these had rapid and tall growth, prolific podding on the main stem, pods high off the ground, many upper lateral branches, large leaves, pods and seeds, and high seed yield. Accessions from the Kikladhes Islands of the central Aegean were extremely variable and those from Naxos Island were represented in 9 of the 13 groups. Accessions from northern Greece grouped together as later flowering, shorter, and smaller-seeded types, but some accessions from the southern Greek Islands were grouped with the northern mainland types. This study identified regions in Greece, such as the south-eastern islands, where further collection may be warranted for traits of obvious agronomic value for domesticated L. angustifolius. Extreme morphological variability occurs within and between collection sites, and between localities in Greece.

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Accession: 002453492

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DOI: 10.1007/bf00053055

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