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. 1989;91(2):464-5.
doi: 10.1104/pp.91.2.464.

Timing of growth inhibition following shoot inversion in Pharbitis nil

A M Abdel-Rahman  1 , M G Cline
Collaborators, Affiliations

Timing of growth inhibition following shoot inversion in Pharbitis nil

A M Abdel-Rahman et al. Plant Physiol. 1989.

Abstract

Shoot inversion in Pharbitis nil results in the enhancement of ethylene production and in the inhibition of elongation in the growth zone of the inverted shoot. The initial increase in ethylene production previously was detected within 2 to 2.75 hours after inversion. In the present study, the initial inhibition of shoot elongation was detected within 1.5 to 4 hours with a weighted mean of 2.4 hours. Ethylene treatment of upright shoots inhibited elongation in 1.5 hours. A cause and effect relationship between shoot inversion-enhanced ethylene production and inhibition of elongation cannot be excluded.

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