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Different sex phenotypes of Cucumis sativus L. and C. melo L. and their endogenous gibberellin activity

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Summary

Gibberellins were extracted from seeds and green plants of different sex types of the closely related species Cucumis sativus L. (cucumber) and C. melo L. (muskmelon). Both seeds and green plants of monoecious and andromonoecious lines of C. sativus contained significantly higher gibberellin levels at all growth stages tested than did a gynoecious line. Gibberellin activity in the monoecious and andromonoecious C. sativus line reached a maximum at the growth stage corresponding to flower differentiation at cotyledonary and first leaf axils. Vernalization of seeds of gynoecious plants resulted in increased male tendency correlated with increased gibberellin activity. In contrast, monoecious and andromonoecious lines of C. melo were gibberellin deficient relative to hermaphroditic and gynoecious lines.

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Authors and Affiliations

  1. Department of Biochemistry, Michigan State University, 48823, East Lansing, Michigan, USA

    Delbert D. Hemphill Jr, L. R. Baker & H. M. Sell

  2. Department of Horticulture, Michigan State University, 48823, East Lansing, Michigan, USA

    Delbert D. Hemphill Jr, L. R. Baker & H. M. Sell

Authors
  1. Delbert D. Hemphill Jr
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  2. L. R. Baker
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  3. H. M. Sell
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Additional information

Journal Article No 5534 from the Michigan Agricultural Experiment Station. This work was supported by a grant from the Herman Frasch Foundation.

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Hemphill, D.D., Baker, L.R. & Sell, H.M. Different sex phenotypes of Cucumis sativus L. and C. melo L. and their endogenous gibberellin activity. Euphytica 21, 285–291 (1972). https://doi.org/10.1007/BF00036769

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  • DOI: https://doi.org/10.1007/BF00036769

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