Journal Article

Photoperiod and Vernalization Responses in Triticum turgidum × T. tauschii Synthetic Hexaploid Wheats

N. N. Gororo, R. G. Flood, R. F. Eastwood and H. A. Eagles

in Annals of Botany

Published on behalf of The Annals of Botany Company

Volume 88, issue 5, pages 947-952
Published in print November 2001 | ISSN: 0305-7364
Published online November 2001 | e-ISSN: 1095-8290 | DOI: https://dx.doi.org/10.1006/anbo.2001.1531
Photoperiod and Vernalization Responses in Triticum turgidum × T. tauschii Synthetic Hexaploid Wheats

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Studies of synthetic hexaploid wheat developed from Triticum turgidum(AABB genomes) and T. tauschii(DD genome) can provide information on potentially useful characters in T. tauschii and/or T. turgidum for genetic improvement of hexaploid wheat (T. aestivum). Synthetic hexaploid wheats and the T. turgidum and T. tauschii parents were assessed for their developmental responses to photoperiod and vernalization for days to ear emergence, final leaf number and the number of spikelets per spike. The responses to photoperiod and vernalization of the synthetic hexaploids were generally intermediate between those of the parents but in some instances the levels of expression exhibited by the T. tauschii or T. turgidum parents were epistatic in the synthetic hexaploids. The relatively strong photoperiod response of the T. tauschii accessions was not expressed in the synthetic hexaploids, but rather the synthetic hexaploids reflected the photoperiod response of the respective T. turgidum parents. The synthetic hexaploids had vernalization responses stronger than those of the T. turgidum and bread wheats used in the study. The expression of ear emergence in response to vernalization of these synthetic hexaploids appeared to be modified by the T. turgidum parent. Copyright 2001 Annals of Botany Company

Keywords: Photoperiod, synthetic hexaploids, Triticum aestivum, Triticum tauschii, Triticum turgidum, vernalization

Journal Article.  10 words. 

Subjects: Ecology and Conservation ; Evolutionary Biology ; Plant Sciences and Forestry

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