Details
| Original language | English |
|---|---|
| Pages (from-to) | 173-177 |
| Number of pages | 5 |
| Journal | Journal of plant growth regulation |
| Volume | 10 |
| Issue number | 1 |
| Publication status | Published - Dec 1991 |
| Externally published | Yes |
Abstract
The effect of a homologous series of octylphenoxy surfactants, α-[4-(1,1,3,3-tetramethylbutyl)phenyl]-ω-hydroxypoly-(oxy-1,2-ethanediyl), condensed with 5, 7-8, 9-10, 16, and 30 oxyethylene (EO) units on enhancement of gibberellic acid (GA3) absorption by leaves of Prunus cerasus cv. Montmorency was studied. Increasing EO chain length (5-30 EO) increased surface tension (27.5-35.3 mN m-1) and contact angles on adaxial (21-36°) and abaxial (28-49°) leaf surfaces. With increasing EO content, the form of GA3 deposits from droplets on the leaf surface changed from an annulus shape (5 and 7-8 EO) to globular forms covering increasingly smaller interface areas (9-10 to 30 EO). The surfactants increased GA3 uptake, the magnitude decreased with an increase in oxyethylene chain length. Similar trends were found for both the adaxial and abaxial surfaces. Penetration through the abaxial surface was linearly related to the logarithm of the oxyethylene content of the surfactant molecule (r2=0.934**) and to the hydrophilic: lipophilic balance (r2=0.926**). Absorption by the abaxial surface was approximately one order of magnitude greater than by the adaxial surface.
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Agronomy and Crop Science
- Agricultural and Biological Sciences(all)
- Plant Science
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In: Journal of plant growth regulation, Vol. 10, No. 1, 12.1991, p. 173-177.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Studies on octylphenoxy surfactants
T2 - IX. Effect of oxyethylene chain length on GA3 absorption by sour cherry leaves
AU - Knoche, Moritz
AU - Bukovac, Martin J.
PY - 1991/12
Y1 - 1991/12
N2 - The effect of a homologous series of octylphenoxy surfactants, α-[4-(1,1,3,3-tetramethylbutyl)phenyl]-ω-hydroxypoly-(oxy-1,2-ethanediyl), condensed with 5, 7-8, 9-10, 16, and 30 oxyethylene (EO) units on enhancement of gibberellic acid (GA3) absorption by leaves of Prunus cerasus cv. Montmorency was studied. Increasing EO chain length (5-30 EO) increased surface tension (27.5-35.3 mN m-1) and contact angles on adaxial (21-36°) and abaxial (28-49°) leaf surfaces. With increasing EO content, the form of GA3 deposits from droplets on the leaf surface changed from an annulus shape (5 and 7-8 EO) to globular forms covering increasingly smaller interface areas (9-10 to 30 EO). The surfactants increased GA3 uptake, the magnitude decreased with an increase in oxyethylene chain length. Similar trends were found for both the adaxial and abaxial surfaces. Penetration through the abaxial surface was linearly related to the logarithm of the oxyethylene content of the surfactant molecule (r2=0.934**) and to the hydrophilic: lipophilic balance (r2=0.926**). Absorption by the abaxial surface was approximately one order of magnitude greater than by the adaxial surface.
AB - The effect of a homologous series of octylphenoxy surfactants, α-[4-(1,1,3,3-tetramethylbutyl)phenyl]-ω-hydroxypoly-(oxy-1,2-ethanediyl), condensed with 5, 7-8, 9-10, 16, and 30 oxyethylene (EO) units on enhancement of gibberellic acid (GA3) absorption by leaves of Prunus cerasus cv. Montmorency was studied. Increasing EO chain length (5-30 EO) increased surface tension (27.5-35.3 mN m-1) and contact angles on adaxial (21-36°) and abaxial (28-49°) leaf surfaces. With increasing EO content, the form of GA3 deposits from droplets on the leaf surface changed from an annulus shape (5 and 7-8 EO) to globular forms covering increasingly smaller interface areas (9-10 to 30 EO). The surfactants increased GA3 uptake, the magnitude decreased with an increase in oxyethylene chain length. Similar trends were found for both the adaxial and abaxial surfaces. Penetration through the abaxial surface was linearly related to the logarithm of the oxyethylene content of the surfactant molecule (r2=0.934**) and to the hydrophilic: lipophilic balance (r2=0.926**). Absorption by the abaxial surface was approximately one order of magnitude greater than by the adaxial surface.
UR - http://www.scopus.com/inward/record.url?scp=0013452533&partnerID=8YFLogxK
U2 - 10.1007/BF02279330
DO - 10.1007/BF02279330
M3 - Article
AN - SCOPUS:0013452533
VL - 10
SP - 173
EP - 177
JO - Journal of plant growth regulation
JF - Journal of plant growth regulation
SN - 0721-7595
IS - 1
ER -