ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Nitrogen  (11)
  • Wheat  (10)
  • Springer  (20)
  • American Chemical Society
  • Elsevier
  • 2000-2004
  • 1985-1989  (20)
  • 1986  (20)
Collection
Keywords
Publisher
Years
  • 2000-2004
  • 1985-1989  (20)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Phosphorus deficiency induced by nitrogen input in Douglas fir in the Netherlands (1986)
    Springer
    Plant and soil 95 (1986), S. 191-200 
    Details
    ISSN: 1573-5036
    Keywords: Atmospheric input ; Douglas fir Fertilization ; Foliar analysis ; Forest nutrition ; N/P ratio ; Nitrogen ; Nutrient status ; Phosphorus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A re-examination of earlier NPK fertilization experiments in Douglas fir stands on sandy soils shows the effects of high nitrogen input by air pollution during the last 10–15 years on plant nutrition at these sites. In 1960, experimental plots showed a positive growth reaction to nitrogen, phosphorus, and potassium fertilization. All suffered from severe phosphorus deficiency in 1984, low phosphorus in the needles was invariably accompanied by a high nitrogen content, with all N/P ratios between 20 and 30. The same conclusion emerges from an independent investigation of nutrient status of a selection of Douglas fir stands. Hence, if stand productivity and a balanced nutrient status of the trees is to be maintained, the increase in atmospheric input of nitrogen calls for supplementary fertilization. Given the current N/P ratios in the needles, a positive growth response to phosphorus fertilization is to be expected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02375071
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Plant-induced changes in the rhizosphere of maize and wheat (1986)
    Springer
    Plant and soil 96 (1986), S. 85-93 
    Details
    ISSN: 1573-5036
    Keywords: 14CO2 atmosphere ; Maize ; Microbial biomass ; Rhizosphere ; Turnover root-derived material ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The release of organic materials by roots of maize and wheat was studied using a growth chamber with a14CO2 atmosphere at constant total CO2 concentration and constant specific activity. The distribution of14C within shoots, roots and soil was determined for both plants after 4 and 6 weeks. After 6 weeks, 1.5% of the total amount of14C fixed by maize was found as a residue in the soil, while for wheat this figure was 2.0%. Rhizosphere14CO2 production was measured in a second experiment and plants were harvested after 3, 4, 5 and 6 weeks growth. The rhizosphere14CO2 evolution by wheat accounted for some 20% of the total amount of fixed14C and was a constant value throughout the growth period. Root-derived products were slowly incorporated by the soil microbial biomass to a maximum of 20% of the residual soil14C content after 6 weeks growth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374998
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Plant-induced changes in the rhizosphere of maize and wheat (1986)
    Springer
    Plant and soil 96 (1986), S. 95-107 
    Details
    ISSN: 1573-5036
    Keywords: 14CO2 atmosphere ; Cobalt ; Complexation ; Maize ; Manganese ; Rhizosphere ; Wheat ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Water-soluble14C-labelled organic material, released into soil from roots of wheat and maize plants, was recovered with a mild percolation technique, without disturbing the root-soil interface. Extraction yields were relatively high for the14C materials (up to 11% of residual soil14C for 6 weeks maize) illustrating the water soluble character of the freshly added material. The complexation potential of the soil extracts was evaluated by adding57Co,65Zn and54Mn to the extract and determining their distribution among the organic fractions by a gel filtration technique. The results show that within four weeks a micro-environment is created around a plant root, characterized by an accumulation of root-derived organic materials. In parallel with this time dependent accumulation, a gradual shift from ionic metal to higher molecular weight forms occurred. The three metals were increasingly complexed throughout the growth period. Extracts from a fallow soil complexed minor amounts of the added tracer (6.4%; 1.9% and 0.2% for57Co,65Zn and54Mn respectively) while cropped soil extracts after 6 weeks complexed 61%; 16% and 6% of respectively Co, Zn and Mn in the case of maize, and 31%, 15% and 1% in the case of wheat. Although the effects are most pronounced in the case of Co and maize, evidence is given for similar effects with wheat and the other metals. The results indicate that the physicochemical status of transition metals in the rhizosphere is entirely different from that in the bulk soil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374999
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Varietal and fertilizer effects on straw phytotoxins (1986)
    Springer
    Biology and fertility of soils 2 (1986), S. 109-112 
    Details
    ISSN: 1432-0789
    Keywords: Straw ; Phytotoxins ; Acetic Acid ; Wheat ; Barley ; Cultivar ; Nitrogen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Acetic acid production over 10 days from fresh barley straw was greater than that from fresh wheat straw, but there were only minor consistent differences between different cultivars. The effect depended on the soil type on which the straw had been produced and acid production was greatest with the largest amounts of N fertilizer which had been used. The fertilizer also affected the C:N ratio of the straw
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00257588
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Comparative physiology of burned and unburned Rhus laurina after chaparral wildfire (1986)
    Springer
    Oecologia 71 (1986), S. 63-68 
    Details
    ISSN: 1432-1939
    Keywords: Rhus ; Lignotuber ; Nitrogen ; Water relations ; Fire
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Laurel Sumac (Rhus laurina) is a dominant member of the coastal chaparral community of southern California that survives periodic burning by wildfires by resprouting from a lignotuber (root crown). We investigated the physiological basis for resprouting by comparing shoot elongation, leaf nitrogen content, tissue water status, leaf conductance to water vapor diffusion, and photosynthetic rates of post-fire R. laurina to those of adjacent unburned shrubs. Resprouts had higher rates of shoot elongation, leaf conductance, and photosynthesis than mature, unburned shrubs. Leaf nitrogen contents were elevated in burned shrubs even though their leaves developed interveinal chlorosis. A comparison of soil water potential to predawn water potential indicated that roots of R. laurina remain active below 2 m during the first summer drought after wildfire. Our results support the hypothesis that lignotubers not only contain dormant buds that develop into aerial shoots after wildfire but they also supply nutrient resources that enhance shoot elongation. Because R. laurina is relatively sensitive to drought, yet very successful in its rapid recovery after fire, maintaining an active root system after shoot removal may be the primary function of the massive lignotuber formed by this species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00377322
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Mistletoes: a hypothesis concerning morphological and chemical avoidance of herbivory (1986)
    Springer
    Oecologia 70 (1986), S. 234-237 
    Details
    ISSN: 1432-1939
    Keywords: Mimicry ; Nitrogen ; Herbivory ; Mistletoe ; Australia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Leaves from many misletoe species in Australia strongly resemble those of their hosts. This cryptic mimicry has been hypothesized to be a means of reducing the likelihood of mistletoe herbivory by vertebrates. Leaf Kjeldahl nitrogen contents (a measure of reduced nitrogen and thus amines, amino acids and protein levels) of mistletoes and their hosts were measured on 48 mimetic and nonmimetic host-parasite pairs to evaluate hypotheses concerning the significance of crysis versus noncrypsis. The hypothesis that mistletoes mimicking host leaves should have higher leaf nitrogen levels than their hosts is supported; they may be gaining a selective advantage through crypsis (reduced herbivory). The second hypothesis that mistletoes which do not mimic their hosts should have lower leaf nitrogen levels than their hosts is also supported; they may be gaining a selective advantage through noncrypsis (reduced herbivory resulting from visual advertisement of their reduced nutritional status).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00379245
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Wheat specific repetitive DNA sequences — construction and characterization of four different genomic clones (1986)
    Springer
    Theoretical and applied genetics 72 (1986), S. 207-210 
    Details
    ISSN: 1432-2242
    Keywords: Repetitive DNA ; Wheat ; Rye ; Relic DNA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The construction and molecular analysis of four recombinant clones — pTa1, pTa2, pTa7, and pTa8 — is described. The four clones contain different highly repeated sequences of genomic DNA from Triticum aestivum variety ‘Chinese Spring’. The wheat specificity has been determined by colony and dot blot hybridization in comparison with total rye DNA (Secale cereale variety ‘Petka’). The four clones with a variable degree of specificity were compared by sequence analysis after the recloning of wheat DNA inserts into M13 mp8. Within the sequencing data a tendency can be observed that those repeated sequences which show the highest degree of species specificity contain a significantly increased amount of GC residues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00266993
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    The effect of specific chromosome and cytoplasm substitutions on the tissue culture response of wheat (Triticum aestivum) callus (1986)
    Springer
    Theoretical and applied genetics 71 (1986), S. 797-800 
    Details
    ISSN: 1432-2242
    Keywords: Wheat ; Callus ; Regeneration ; hromosomes ; Cytoplasm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Calli were initiated from immature embryos of four lines of hexaploid wheat (Triticum aestivum L. em. Thell), the euplasmic nuclear donor ‘Chinese Spring’, ‘Chinese Spring’ in which both 4B chromosomes were substituted by those of the variety ‘Cappelle-Desprez’ and two alloplasmic lines in which these nuclei were substituted into the cytoplasm of Aegilops ovata. The calli were found to differ in their initia growth rates and their ability to organise shoot primordia and regenerate shoots. The ‘Cappelle’ 4B chromosomes had a very significant effect on all these characters. The potential for modelling genotypes for improved tissue culture characteristics is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276420
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Cytoplasmic effects on the tissue culture response of wheat (Triticum aestivum) callus (1986)
    Springer
    Theoretical and applied genetics 72 (1986), S. 70-75 
    Details
    ISSN: 1432-2242
    Keywords: Cytoplasm ; Wheat ; Tissue culture ; Callus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Calli were initiated from immature embryos of eight lines of hexaploid wheat (Triticum aestivum L. em. Thell) with different cytoplasms, the euplasmic nuclear donor ‘Chinese Spring’ and seven alloplasmic lines derived from wild relative species of the genera Triticum and Aegilops. The calli were found to differ in their initial growth rates, their sensitivity to 2,4-D and their ability to organise shoot primordia, demonstrating that the cytoplasm can significantly affect the behaviour of tissues in culture. The potential for improving the responses of tissues in culture by cytoplasmic changes is noted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00261457
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Cytoplasmic virus-like particles associated with the nucleolus in wheat, similar to “S bodies” and retroposon particles (1986)
    Springer
    Protoplasma 133 (1986), S. 160-164 
    Details
    ISSN: 1615-6102
    Keywords: Cytoplasm ; Electron microscopy ; Nucleolus ; Virus-like particles ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Wheat roots from germinating seedlings of Chinese spring wheatTriticum aestivum grown for 36 hours at 20°C were examined by conventional thin-section electron microscopy. Virus-like particles were seen inside a large cytoplasmic intrusion into the nucleus having the appearence of a nucleolar vacuole. The particles were isometric and about 50 nm in diameter with a membrane-like coat and a small core. The cytoplasmic intrusion was bounded by nuclear envelope with pores apparent where it abutted nucleoplasm. The particles are similar to previously reported solitary particles “S bodies” from a range of plants but are also similar in size and morphology to the retroposon particles associated with copia like elements in other organisms. The position of the virus-like particles in the young wheat roots is discussed in relation to interactions with components of the cell skeleton.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01304631
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...