ISSN:
1573-1561
Keywords:
Allelopathy
;
volatile allelochemicals
;
methyl ketones
;
germination inhibitors
;
onion
;
Allium cepa
;
carrot
;
Daucus carota
;
Palmer amaranth
;
Amaranthus palmeri
;
tomato
;
Lycopersicon esculentum
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract The effects of nine methyl ketones previously identified in the mixture of volatiles released byAmaranthus palmeri (AMAPA) residues upon onion, carrot, AMAPA, and tomato seed germination were determined. Three-day exposures to these volatiles significantly inhibited germination of all assay seeds, and the degree of inhibition was dependent upon seed species, exposure time, and concentration. Based on the degree of inhibition observed in both time- and concentration-dependent assays, the following activity series was obtained: 2-octanone, 2-nonanone 〉 2-undecanone 〉 2-heptanone 〉 2-hexanone, 3-methyl-2-butanone, 2-pentanone, 3-hydroxy-2-butanone 〉 2-butanone. The activities of these compounds appear to be additive and dependent on relative volatility and hydrophilicity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01012527
