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  • 1
    Electronic Resource
    Electronic Resource
    Evidence from a Dwarf Pea Bioassay for Naturally Occurring Gibberellins in the Growing Plant (1958)
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 1548-1549 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A method of bioassay has been developed based on the effects of gibberellic acid on internode extension of dwarf pea seedlings8. Pea seedlings (var. Meteor) are grown in upturned bottles from which the bases have been removed. Each bottle, 16 cm. tall and 8 cm. wide, is almost filled with perlite, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1811548a0
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  • 2
    Electronic Resource
    Electronic Resource
    ‘Bound’ Gibberellin in Mature Runner Bean Seeds (1961)
    [s.l.] : Nature Publishing Group
    Nature 192 (1961), S. 575-576 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Mature runner bean seeds, mean length 28 mm., were divided into three samples, each of 120 gm. Sample A was homogenized in 500 ml. of a mixture of equal parts of acetone and water. (A mixture of acetone and water has been used as a primary solvent for the extraction of gibberellins from plant ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/192575a0
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  • 3
    Electronic Resource
    Electronic Resource
    Gibberellins in the Red Alga Hypnea musciformis (Wulf.) Lamour (1967)
    [s.l.] : Nature Publishing Group
    Nature 215 (1967), S. 872-873 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The extraction method used was essentially one of those previously described for the extraction of acidic gibberellins from higher plants4. Plants of Hypnea musciformis (Wulf.) Lamour. were collected from coastal reefs near Perth, and deep frozen until required. The thawed material (mass 1 kg) was ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/215872a0
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  • 4
    Electronic Resource
    Electronic Resource
    Glandular hair formation and resin secretion inEremophila fraseri F. Meull (Myoporaceae) (1977)
    Springer
    Protoplasma 92 (1977), S. 71-86 
    Details
    ISSN: 1615-6102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Glandular hairs ofEremophila fraseri secrete a resin containing terpenoid and flavonoid components. Each glandular hair secretes about 0.2 μg resin, which constitutes 17% of the mature leaf dry weight. The glandular heads are characterized by proliferated endoplasmic reticulum associated with numerous amoeboid plastids having reduced internal lamellae. Nuclear crystals occur in the stalk and head cells of the glands. The head cells also contain calcium oxalate crystals. Resin release occurs through an apical secretion cavity. Cutinization of the walls of the head and supporting cells, and the role of specialized structures of the head cells in resin formation are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01280201
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  • 5
    Electronic Resource
    Electronic Resource
    Replacement of the requirement for vernalisation in centaurium minus moench by gibberellic acid (1957)
    Springer
    Naturwissenschaften 44 (1957), S. 428-429 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00623895
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  • 6
    Electronic Resource
    Electronic Resource
    The control by gibberellic acid of stem elongation and flowering in biennial plants of Centaurium minus Moench (1967)
    Springer
    Planta 76 (1967), S. 242-251 
    Details
    ISSN: 1432-2048
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Application of a small amount of gibberellic acid (GA3) to unvernalized rosettes of a biennial strain of Centaurium minus Moench brings about immediate stem elongation under both long days (LD) and short days (SD), but the rate of stem elongation falls after the cessation of treatment. Under LD, but not SD, a second period of rapid and prolonged stem elongation may subsequently take place, associated with flowering. Extended GA3 treatment under SD leads to the formation of a long stem but not to flowering; after the treatment the plants revert to vegetative “aerial rosettes” unless transferred to LD prior to the cessation of stem elongation; after such a transfer, rapid stem elongation and flowering may be initiated. If flower primordia are initiated under LD, stem elongation and formation of flower primordia continue after transfer to SD, though flowers do not develop fully. It is suggested that under LD but not SD applied GA3 may bring about the production of endogenous gibberellin, and that this synthesis of endogenous gibberellin occurs in the flower primordia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00409816
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  • 7
    Electronic Resource
    Electronic Resource
    Growth substances and the relation between phenotype and genotype in Pisum sativum (1970)
    Springer
    Planta 91 (1970), S. 235-245 
    Details
    ISSN: 1432-2048
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Reciprocal grafts between plants of the tall variety Alaska and the dwarf Progress No. 9 show that neither roots nor mature leaves determine shoot phenotype. It is demonstrated that differences in stem growth between the two varieties are essentially controlled by a single Mendelian factor, and the effect of this Le locus is not graft transmissible. Combined with published data for gibberellin content this confirms that the Le locus does not control shoot phenotype by regulating gibberellin synthesis. Growth of slender plants (Le la cry s ) and early growth of microcryptodwarfs (le la cry c lm) is not inhibited by AMO-1618 at concentrations which greatly reduce growth of tall plants. This is consistent with the suggestion that rapid growth in these varieties, in the absence of the inhibitory effect of La and Cry, is not dependent on endogenous gibberellin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00385483
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  • 8
    Electronic Resource
    Electronic Resource
    The potential use of wetlands to reduce phosphorus export from agricultural catchments (1993)
    Springer
    Nutrient cycling in agroecosystems 36 (1993), S. 157-164 
    Details
    ISSN: 1573-0867
    Keywords: phosphorus ; wetlands ; nutrient uptake
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Natural and artificial wetlands have the potential to reduce phosphorus (P) loads from dispersed agricultural runoff and from point sources in the Peel-Harvey catchment, Western Australia. Small experimental systems containing wetland plants and substrate have shown significant removal of P from inflowing water, the proportion of P removed being dependent on P concentration and flow rate of water through the system. The use of artificial wetlands to treat diffuse agricultural runoff is limited by the highly seasonal runoff typical of this Mediterranean climate, while use at point sources has so far been unsuccessful because compounds from the effluent clog the wetland ‘filters’. Treatment at point sources may well be feasible after further research. Natural wetlands in the catchment absorb P received in runoff from farmland and, in the absence of any outflow channels to the drainage system, confine this P within the boundaries of the wetland. Disturbance to wetlands may reduce their efficiency in absorbing nutrients and may release P stored in the vegetation and sediment to the water. The conservation of natural wetlands is recommended to maximise nutrient retention in the catchment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00747587
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  • 9
    Electronic Resource
    Electronic Resource
    Eutrophic waters of southwestern Australia (1993)
    Springer
    Nutrient cycling in agroecosystems 36 (1993), S. 105-114 
    Details
    ISSN: 1573-0867
    Keywords: eutrophication ; phosphorus ; algae ; cyanobacteria ; seagrasses ; plankton ; benthic fauna
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Water bodies in coastal areas of southwestern Australia are predisposed to eutrophication. The sandy soils of the catchments retain nutrients poorly, streamflow is highly seasonal, most freshwater wetlands are small and shallow, and the estuaries are poorly flushed. Nearshore waters lack the conventional upwelling of other coastal regions in these latitudes. Consequences include increased macroalgal growth and phytoplankton blooms, especially of cyanobacteria, and loss of seagrasses. Changes to fish and invertebrate populations result both from increased algal production and low oxygen concentrations. Algal toxins and outbreaks of botulism have caused waterbird casualties. Phosphorus is especially important in controlling plant biomass in freshwater wetlands and estuaries, and N in some wetlands and coastal embayments. In the examples reviewed here nutrients are derived mainly from fertilizer applications in catchments and rural industries, and from sewage and individual discharges to coastal waters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00747580
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  • 10
    Electronic Resource
    Electronic Resource
    Inter-relations between biological and physicochemical factors in a database for a shallow estuarine system (1990)
    Springer
    Environmental monitoring and assessment 14 (1990), S. 223-238 
    Details
    ISSN: 1573-2959
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract This paper examines data obtained since 1976 in Peel Inlet and the Harvey Estuary, a shallow estuarine system in Western Australia, which has nuisance growths of macroalgae and seasonal blooms of the cyanobacterium (blue-green alga)Nodularia spumigena. Data collected at the same sites at weekly or fortnightly intervals include phytoplankton (chlorophylla), water nutrients (nitrogen and phosphorus), salinity, temperature and light penetration. Seasonally, the biomass of macroalgae has been measured at a number of sites and used to estimate total biomass. The data are characterised by large season-to-season differences, attributable to the seasonality and volume of river flow. The information has been used to relate the magnitude of summer blue-green algal blooms to the winter loading of phosphorus from the surrounding catchment, and the magnitude of macroalgal biomass to light penetration through the water column.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00677918
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