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Growth stimulation ofEuphorbia lathyris L. by GA4+7 and BA

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Abstract

Container-grownEuphorbia lathyris plants were treated with foliar sprays of various combinations of BA and GA4+7 or 0–3600 mg L−1 Promalin (1∶1 BA + GA4+7) in separate experiments. GA4+7 and Promalin stimulated plants to grow taller. BA and Promalin promoted axillary shoot growth. Multiple applications of Promalin stimulated branching more than single treatments. Dry weight accumulation was stimulated only if the growth regulators were applied to 28–33-cm and not to 56-cm tall plants. Chemical names used: (1α, 2β, 4aα, 4bβ, 10β)-2,4a,7-trihydroxy-1-methyl-8-methylenegibb-3-ene-1,10-dicarboxylic acid 1,4a-lactone (GA4+7),N-(phenylmethyl)-H-purin-6-amine (BA), and Promalin [1∶1 (wt/wt) GA4+7 and BA].

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Authors and Affiliations

  1. Department of Plant and Soil Science, Southern Illinois University, 62901, Carbondale, Illinois, USA

    John E. Preece

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  1. John E. Preece
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The use of the name Promalin or other trade names does not imply endorsement to the exclusion of other products or vendors that may also be suitable.

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Preece, J.E. Growth stimulation ofEuphorbia lathyris L. by GA4+7 and BA. J Plant Growth Regul 9, 85–88 (1990). https://doi.org/10.1007/BF02041946

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  • DOI: https://doi.org/10.1007/BF02041946

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