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The Journal of Heredity 1981:72(4):284-285
© 1981 The American Genetic Association 72:284-285

other

Apomictic progeny derived from intergeneric Hordeum-Triticum hybrids

A. Mujeeb-Kazi

CIMMYT (International Maize and Wheat Improvement Center) Londres 40, Apdo. Postal 6-641, Mexico 6, D.F.

Abstract

Intergeneric hybrids between Hordeum vulgare cv. Manker x Triticum turgidum cv. Cocorit 71, and H. vulgare cv. Manker x T. aestivum cvs. Bonza and Chinese Spring were backcrossed to their respective wheat parent cultivars in attempts to produce backcross-1 seed. The backcross chromosome composition was expected to be 2n = 5x = 35 HAABB for the T. turgidum backcross. and 2n = 7x = 49 HAABBOO for the T. aestivum backcross. From each cross, however, apomictic plants were obtained that were of similar genetic composition to the F1 hybrids: 2n = 3x = 21 for H. vulgare x T. turgldum; and 2n = 4x = 28 for H. vulgare x T aestivum. The significance and details of these observations are discussed.


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