| Origin of the preliminary released Hungarian hexaploid
Triticale varieties, Nos. 57 and 64 A. KISS Agricultural Experimental Institute of Duna-Tiszakoz, Kecskemet, Hungary In Hungary up to the present the secondary hexaploid Triticale varieties, Nos. 57 and 64, have been officially registered. Both varieties come from identical crossing combinations using Triticale No. 1 as basic material. This latter is an amphiploid (2n=6x=42) derived from crossing Triticum turgidum with Secale cereale developed by Gyorgy REDEI (at present, Professor of Genetics at the University of Missouri, U.S.A.) and was sent to me in as far back as 1950. But it could not be taken into general cultivation because of its tall straw, poor winterhardiness, late maturing, poor fertility and shrunken and shrivelled grains. Though it showed some variability in fertility among certain individuals, neither its fertility nor the characteristics mentioned above have improved as years passed by. Neither did we succeed in getting more valuable types when crossing amphiploids of Triticum turgidum x Secale cereale developed by Professor NAKAJIMA. Simultaneously we have also developed octoploid Triticales, but their fertility was even lower than that of Triticale No. 1. Several octoploid Triticales, more fertile than our own hybrids, have been received from abroad, such as Triticale AD 20/1, Triticale Meister,Triticale Taylor and quite recently the Swedish Triticale M x C x A and Triticale O x L. The Swedish Triticales arrived only in 1963, so they have no part in the pedigree of Nos. 57 and 64 but Triticale Rimpau, received from Gatersleben, was taken in. The succession of crossings and selections is as follows:
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