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  • 1
    Electronic Resource
    Electronic Resource
    Identification and bioactivity of volatile allelochemicals from amaranth residues (1989)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 37 (1989), S. 792-796 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00087a049
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation and evaluation of controlled-release formulations of 2,6-dichlorobenzonitrile (1984)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 32 (1984), S. 1199-1205 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00125a067
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  • 3
    Electronic Resource
    Electronic Resource
    Quantitative Cotton Fiber Maturity Measurements by X-ray Fluorescence Spectroscopy and Advanced Fiber Information System (1995)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 43 (1995), S. 1219-1223 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00053a018
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  • 4
    Electronic Resource
    Electronic Resource
    Simultaneous determination of 2,6-dichlorobenzonitrile and 2,6-dichlorobenzamide in aqueous samples by a direct high-performance liquid chromatographic method (1984)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 32 (1984), S. 200-202 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00122a007
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  • 5
    Electronic Resource
    Electronic Resource
    Canopy Photosynthesis and Fiber Properties of Normal- and Late-Planted Cotton (2000)
    Springer
    Semigroup forum 92 (2000), S. 518-523 
    Details
    ISSN: 1432-2137
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Gossypium hirsutum L.) often differ in fiber properties, especially those properties related to fiber secondary wall characteristics. This field study was conducted to (i) determine the effect of planting date on fiber properties of bolls at two flowering times, and (ii) determine the relationship between fiber properties and canopy photosynthesis during development of those bolls. Cotton (`Stoneville 453') was planted on 3 May and 3 June in 1995 and 3 May and 31 May in 1996. Canopy photosynthesis was measured 10 to 12 times on sunny days from initial flowering through the end of the season. Fiber properties were determined on first sympodial position bolls that bloomed during the first and fourth week of flowering (WOF). Maximum canopy photosynthesis was 21% higher in 1996 than in 1995 and lint yield was 22% greater in 1996 than in 1995. Within each year, average maximum canopy photosynthesis did not differ between planting dates, although yield was approximately 30% lower for the late planting date each year. Bolls from the first WOF generally had lower lint percent, higher short fiber content, lower elongation, and lower whiteness index than bolls from the fourth WOF. Micronaire, immature fiber fraction, and fiber cross-sectional area were linearly related to the amount of canopy photosynthesis that occurred from 15 to 45 d after flowering. Our results are consistent with the hypothesis that assimilate supply influences cotton fiber properties associated with secondary wall characteristics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/
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  • 6
    Electronic Resource
    Electronic Resource
    Comparison of the seed germination effects of synthetic analogs of strigol, gibberellic acid, cytokinins, and other plant growth regulators (1988)
    Springer
    Journal of plant growth regulation 7 (1988), S. 227-239 
    Details
    ISSN: 1435-8107
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Four synthetic multiring analogs of strigol, a naturally occurring sesquiterpene lactone that promotes germination of dormant seeds ofStriga (witchweed), were found to stimulate germination of dormantLactuca (lettuce) seeds. The effects on light-sensitive and light-insensitive lettuce seeds were concentration-dependent and exceeded those produced by equimolar (0.1 mM) solutions of gibberellic acid. Strigol and epistrigol promoted lettuce seed germination to a lesser degree than did the synthetic analogs. The strigol group compounds had minimal effect on the germination of monocot seeds. The results indicate that the synthetic strigol analogs have plant growth regulatory activity in dormant seeds of genera beyondStriga in which germination stimulation by strigol and the synthetic analogs was first demonstrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02025265
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  • 7
    Electronic Resource
    Electronic Resource
    Germination stimulation in wild oats (Avena fatua L.) by synthetic strigol analogs and gibberellic acid (1990)
    Springer
    Journal of plant growth regulation 9 (1990), S. 35-41 
    Details
    ISSN: 1435-8107
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract At concentrations of 0.01–1 mM, five synthetic multiring analogs of strigol were effective germination stimulants of intact and dehulled wild oat (Avena fatua L.) seeds. The effect was concentration-dependent and equaled or exceeded that produced by equimolar gibberellic acid (GA3). The most effective strigol analog treatments induced 55–80% germination within 7 days in intact wild oat seeds and resulted in 63–86% germination and normal seedling growth over 14 days. Intact wild oat controls germinated 14% after 14 days. The stimulation of wild oat germination by these synthetic strigol analogs demonstrates that these compounds, initially developed as germination stimulants for the seeds of the parasitic weed, witchweed (Striga asiatica L. Kuntz.), have bioregulatory activity in dormant seeds of monocots, as well as dicots. None of the compounds tested significantly affected the germination of nondormant cultivated oat seeds (Avena sativa L.). The commonly used dispersal agent, Tween 20 (0.1%), was found to inhibit germination of cultivated oats, alone and in the presence of 2% acetone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02041939
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  • 8
    Electronic Resource
    Electronic Resource
    Volatile methyl ketone seed-germination inhibitors fromAmaranthus palmeri S. Wats. Residues (1988)
    Springer
    Journal of chemical ecology 14 (1988), S. 1617-1631 
    Details
    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
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  • 9
    Electronic Resource
    Electronic Resource
    Seed-germination inhibition by volatile alcohols and other compounds associated withAmaranthus palmeri residues (1988)
    Springer
    Journal of chemical ecology 14 (1988), S. 1633-1648 
    Details
    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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  • 10
    Electronic Resource
    Electronic Resource
    Inhibition and promotion of germination by several sesquiterpenes (1989)
    Springer
    Journal of chemical ecology 15 (1989), S. 1785-1793 
    Details
    ISSN: 1573-1561
    Keywords: Burrodin ; confertiflorin ; desacetylconfertiflorin ; dihydroparthenolide ; parthenin ; 7α-hydroxy-3-desoxyzaluzanin C ; guayulin A ; sesquiterpene lactone ; allelopathy ; seed germination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The sesquiterpene lactones, burrodin, confertiflorin. desacetyl-confertiflorin, dihydroparthenolide, parthenin, and 7α-hydroxy-3-desoxyzaluzanin C, and the sesquiterpene ester guayulin A were assayed at concentrations of 1, 10, and 100 μM for effects on seed germination of 16 dicot and nine monocot species. Six of the dicot and two of the monocot species were affected by one or more of these compounds. Germination was both inhibited and promoted, depending on the compound and the specific species or cultivars, at concentrations as low as 1 μM. For example, guayulin A, which promoted the germination of lettuce at all concentrations tested, inhibited the germination of tomato. Confertiflorin stimulated germination of the lettuce cultivar Grand Rapids at 1 μM, but inhibited germination of a light-sensitive cultivar at all concentrations tested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012266
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