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Genetically controlled differences in the effects of chlormequat on tetraploid wheat (Triticum turgidum)

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Abstract

Two crosses between Triticum turgidum wheat lines differing in their response to chlormequat (CCC) were tested. In the F2 population of one cross, which was segregating for the Rht1 dwarfing allele, each plant was cloned by separation of two tillers, one of which was treated with CCC. The tall (rht1/rht1) and the intermediate (Rht1/rht1) genotypes showed a greater response to CCC than the semi-dwarf (Rht1/Rht1) genotype, as expressed by culm length and date of ear emergence. The F3 families of another cross and their two semi-dwarf parents were grown in a three-replicated field test in paris of rows, one of which was treated with CCC. In one of the parents and in 1/4 of the F3 families CCC induced a wide-angled tiller growth, suggesting a monogenic control of this growth habit in response to CCC.

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Authors and Affiliations

  1. Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel

    Shahal Abbo & Moshe J. Pinthus

  2. Department of Plant Genetics, The Weizmann Institute of Science, Rehovot, Israel

    Eitan Millet

Authors
  1. Shahal Abbo
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  2. Eitan Millet
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  3. Moshe J. Pinthus
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Additional information

Based on an M.Sc. thesis presented by the senior author to the Faculty of Agriculture of The Hebrew University of Jerusalem.

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Abbo, S., Millet, E. & Pinthus, M.J. Genetically controlled differences in the effects of chlormequat on tetraploid wheat (Triticum turgidum). Plant Growth Regul 5, 235–239 (1987). https://doi.org/10.1007/BF00024699

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  • DOI: https://doi.org/10.1007/BF00024699

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