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I. Research Notes Addendum to the classification of the genus Aegilops by means of genome-analysis H. KIHARA and M.TANAKA Kihara Institute for Biological Research, Yokohama, and Laboratory of Genetics, Kyoto University, Kyoto, Japan Classification of the genus Aegilops on the basis of genome-analysis was published in 1954 and 1957. At that time a Palestinian hexaploid species, Ae. vavilovii (ZHUK.) CHENN., was not studied, due to lack of living material. At first it was classified as belonging to Ae. crassa (var. vavilovii ZHUKOVSKY Or var. palaestina EIG). Collected by YAMASHITA and others in Jordan (1959), it was studied morphologically and genome-analytically by TANAKA (cf. KIHARA 1963) and it became soon clear that it should be separated from Ae. crassa as an independent species [Ae. vavilovii (ZHUK.) CHENN.]. Therefore it might be worthwhile to have the whole list of genome-types of the genus (Table 1). With the increase of our knowledge of the relationship of the two genera, Aegilops and Triticum, we need a complete revision of the genome symbols. However the situation is still uncertain. So we must be satisfied at present with the old symbols. Literature cited CHENNAVEERAIAH, M. S. 1960. Karyomorphologic and cytotaxonomic studies in Aegilops. Acta Hort. Gotoburgensis 23 : 85-178. KIHARA, H. 1954. Considerations on the evolution and distribution of Aegilops species based on the analyser-method. Cytologia 19 : 336-357. KIHARA, H. 1957. Completion of genome-analysis of three 6x species of Aegilops. Seiken Ziho 8 : 3. KIHARA, H. 1963. Interspecific relationship in Triticum and Aegilops. Seiken Ziho 15 : 1-12. (Received March 6,1970) |