Home > Proceedings of the International Plant Propagators Society – 2012 > ANTITRANSPIRANT EFFECTS ON WATER USE EFFICIENCY IN IMPATIENS©

Articles

ANTITRANSPIRANT EFFECTS ON WATER USE EFFICIENCY IN IMPATIENS^©

Article number

1014_94

Pages

423 – 428

Language

English

Abstract

MBI-501, an antitranspirant, was evaluated for the potential to enhance drought tolerance by determining water use efficiency of Impatiens walleriana Super Elfin^TM Series, XP White impatiens.
MBI-501 was foliar-applied weekly, at 0.0X, 0.5X, 1.0X or 1.5X to impatiens grown under three water stress treatments: 0 (daily), 3, or 6 days between watering (DBW). To determine drought tolerance, final growth indices (FGI), shoot dry weight (SDW), root dry weight (RDW), photosynthesis (Pn), midday leaf water potential (Ψ_stem), water use efficiency (WUE) and mean water applied (MWA) were collected.
Application of MBI-501 at the 1.0× rate resulted in greater RDW compared to the 1.5X rate. Ψ_stem was greater (more negative) in impatiens treated with the 1.5X rate of MBI-501 at 6 DBW compared to the nontreated (0.0×) at 6 DBW, suggesting that applying MBI-501 above the 1.0× use rate may cause adverse effects.
There was a rate × DBW effect on WUE. Generally, increasing the DBW reduced growth of impatiens with MBI-501 having no effect on enhancing drought tolerance.

Publication

Proceedings of the International Plant Propagators Society – 2012

Authors

D.R. Cochran, R.L. Harkess, P.R. Knight, E.K. Blythe, M. Tomaso-Peterson, C.H. Gilliam

Keywords

Full text

https://doi.org/10.17660/ActaHortic.2013.1014.94

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