Natural Hybridization between Aegilops sharonensis and Ae. longissima: A Morphological and Cytological Study

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Abstract
Natural hybridization was studied between two diploid (2n = 14) species of Aegilops, A. sharonensis Eig and A. longissima Sch. and Muschl. These species occur sympatrically in the Sharon Plain of Israel. The hybrid swarms are confined to disturbed habitats. Certain characters of the hybrids were studied by means of Anderson''s technique of population sampling and then compared with F1 and F2 populations obtained by artificial means. The natural hybrids were found to exhibit characteristic variation patterns. The two species differ by a reciprocal translocation, thus the hybrid nature of the natural populations could be told by the presence of translocation heterozygotes.

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