ISSN:
1573-1561
Keywords:
Allelopathy
;
volatile allelochemicals
;
alcohols
;
aldehydes
;
germination inhibitors
;
onion
;
Allium cepa
;
carrots
;
Daucus carota
;
Palmer amaranth
;
Amaranthus palmeri
;
tomato
;
Lycopersicon esculentum
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract Effects of 3-pentanone and eight low molecular weight aliphatic alcohols and aldehydes identifed in the mixtures of volatiles released byAmaranthus palmeri S. Wats. (AMAPA) residues were determined on germination of onion, carrot, AMAPA, and tomato seeds. Three-day exposures to these volatiles significantly inhibited germination of these assay seeds, and the inhibition was dependent upon 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-heptanol 〉 3-methyl-1-butanol, 1-hexanol 〉 hexanal, 1-pentanol, 3-pentanone, acetaldehyde 〉 ethanol, 2-methyl-1-propanol. The activities of this group of compounds with that of 2-heptanone appear to be additive and related to test compound volatility and hydrophilicity. 2-Heptanol and 2-heptanone also significantly inhibited the germination of other species, including shepherdspurse, soybean, lettuce, alfalfa, common purslane, oats, and lovegrass.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01012528
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