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  • Electronic Resource  (22)
  • Polymer and Materials Science  (17)
  • tomato  (5)
  • 1
    Electronic Resource
    Electronic Resource
    High salt tolerance potential in Lycopersicon species during germination (1986)
    Springer
    Euphytica 35 (1986), S. 575-582 
    Details
    ISSN: 1573-5060
    Keywords: Lycopersicon ; tomato ; salinity ; germination ; germplasm ; breeding ; salt-tolerance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The potential to improve seed germination responses to salinity was evaluated for 13 accessions representing six wild Lycopersicon species and 20 accessions of L. esculentum. Germination response times increased in all accessions at 100 mM NaCl. Analysis indicated that one accession of L. peruvianum (PI126435) germinated faster under high salinity than all other accessions and was closely followed by L. pennellii (LA716). The fastest germinating L. esculentum accession, PI174263, ranked third. Additional wild ecotypes exhibiting rapid germination at 100 mM NaCl were identified among L. pimpinellifolium and L. peruvianum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00021866
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  • 2
    Electronic Resource
    Electronic Resource
    A greenhouse screening method forPyrenochaeta lycopersici resistance in tomatoes (1989)
    Springer
    Euphytica 40 (1989), S. 187-191 
    Details
    ISSN: 1573-5060
    Keywords: Lycopersicon esculentum ; tomato ; Pyrenochaeta lycopersici ; corky root ; brown root rot ; resistance ; greenhouse screening method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A greenhouse screening method for corky root (Pyrenochaeta lycopersici) resistance in the tomato (Lycopersicon esculentum) is described in detail. In determining the reliability of the method, known resistance sources within wild asccessions, commerical cultivars and breeding lines were evaluated for resistance in fields naturally infested with corky root and their response compared under greenhouse conditions in soil heavily infested with corky root and artifically maintained at temperatures between 10–13°C. The procedure developed can be used year round and improves the efficiency of recovering resistant progeny in large segregrating populations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00024510
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Generation means analysis of right-censored response-time traits: Low temperature seed germination in tomato (1990)
    Springer
    Euphytica 48 (1990), S. 239-244 
    Details
    ISSN: 1573-5060
    Keywords: Lycopersicon esculentum ; tomato ; cold tolerance ; seed germination ; genetic analysis ; missing data ; response-time data
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In studies to determine the inheritance of response-time traits, such as time to seed germination, some viable individuals may fail to respond during an experiment. If these right-censored observations are ignored, sample means and variances will be underestimated. This is illustrated using data from time to seed germination at 9°C for Lycopersicon esculentum (Mill.) fast germinating PI 120256, slow-germinating T3 and their reciprocal F1, F2 and backcross progeny. This paper presents methods to detect and to accommodate right-censored data in generation means analysis. Genetic interpretations derived from corrected and uncorrected estimates of generation means and variances are compared. Correction for right-censoring increased estimates of environmental and phenotypic variances, and decreased heritability estimates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00023656
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  • 4
    Electronic Resource
    Electronic Resource
    Improvement of tomato flavor by genetically increasing sugar and acid contents (1983)
    Springer
    Euphytica 32 (1983), S. 845-855 
    Details
    ISSN: 1573-5060
    Keywords: Lycopersicon esculentum ; tomato ; flavor ; sensory evaluation ; soluble solids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Advanced high sugar and acid breeding lines of tomatoes (Lycopersion esculentum Mill.) were rated higher in sweetness, sourness and overall flavor intensity than the standard cultivars Cal Ace or T3. Titratable acidity and soluble solids content were major contributors to differences in overall flavor intensity. The results demonstrate that significant improvement in tomato flavor can be attained by increasing sugar and acid contents in tomato fruits by genetic manipulation. Current evidence indicates that breeding for high soluble solids in horticulturally acceptable tomato cultivars is justified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00042166
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  • 5
    Electronic Resource
    Electronic Resource
    Low temperature seed germination of Lycopersicon species evaluated by survival analysis (1982)
    Springer
    Euphytica 31 (1982), S. 869-883 
    Details
    ISSN: 1573-5060
    Keywords: Lycopersicon ; tomato ; low temperature germination ; survival analysis ; high altitude ecotypes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Low temperature germination responses were evaluated for 18 high altitude accessions representing five wild Lycopersicon species and 19 accessions of L. esculentum which have reputed ability to germinate in the cold. Survival analysis indicated that one accession of L. chilense germinates better at 10°C than PI 120256, the fastest-germinating L. esculentum genotype, and that PI 120256 germinates as well as PI 126435 (L. peruvianum). Additional wild ecotypes exhibiting rapid germination at 10°C were identified from L. peruvianum and L. hirsutum. These ecotypes may possess genetic potential for introgressing cold germination ability into L. esculentum cultivars.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00039227
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  • 6
    Electronic Resource
    Electronic Resource
    A theoretical study of liquid-film spread heights in the calendering of newtonian and power law fluids (1970)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 14 (1970), S. 2771-2784 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The relationship between spread height and upstream reservoir thickness, with power low coefficient as parameter, was obtained analytically. At all values of n studied, the value of r (ratio of spread height to nip width) increases with increasing values of H/ho where H is upstream reservoir thickness and ho is nip width. At higher values of H/ho, the curves of r, versus H/ho tend to “flatten” out, and r approaches an asymptotic value. For example, the asymptotic value of r for Newtonian fluids (power law constant of 1) is 1.226. Asymptotic values of r increase with decreasing values of the power law constant.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1970.070141111
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  • 7
    Electronic Resource
    Electronic Resource
    A theoretical study of liquid-film spread heights in the calendering of Newtonian and power law fluids (1975)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 19 (1975), S. 2351-2351 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1975.070190826
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  • 8
    Electronic Resource
    Electronic Resource
    Radiation-induced crosslinking of polyethylene in the presence of acetylene: A gel fraction, UV-visible, and ESR spectroscopy study (1993)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 31 (1993), S. 807-819 
    Details
    ISSN: 0887-6266
    Keywords: polyethylene, polyene formation on irradiation with acetylene present in ; polyene formation in irradiation of polyethylene with acetylene present ; crosslinking in polyethylene irradiated with acetylene present ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Electron-spin resonance (ESR) and altraviolet (UV) visible spectroscopic evidence has been found for the formation of diene, triene and tetraene, following the irradiation of polyethylene in the presence of acetylene. The polyenes are formed by a mechanism which is different from that observed under vacuum or with inert gas saturation. The sum of the G (polyene) values obtained by UV spectroscopy is almost half that of initial radical formation. It is concluded that polyene bridges, predominantly diene, form crosslinks between radical pairs. G (X) values determined from gel fraction data, using Saito-Kang-Dole theory, are found to be greatly in error and misrepresentative of crosslink changes. © 1993 John Wiley & Sons, Inc.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1993.090310709
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  • 9
    Electronic Resource
    Electronic Resource
    The morphology of as-cast films of a polymer blend: Dependence on polymer molecular weight (1995)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 33 (1995), S. 1307-1311 
    Details
    ISSN: 0887-6266
    Keywords: polymer surfaces ; polymer films ; polymer blends ; phase separation ; polystyrene-polybutadiene ; neutron reflectometry ; ion beam profiling ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1995.090330815
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  • 10
    Electronic Resource
    Electronic Resource
    Computer modeling of the formation of radical pairs in amorphous high density polyethylene (HDPE) (1996)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 34 (1996), S. 901-908 
    Details
    ISSN: 0887-6266
    Keywords: hydrogen atom ejection ; radical-pair formation ; computer modelling of in ; n-hydrocarbons and high density polyethylene (HDPE) ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Hydrogen atom ejection and subsequent radical pair formation have been modeled in a simple atomistic study employing a BIOSYM amorphous polyethylene macrocell. Mean radical pair distances have been obtained for various maximum hydrogen displacement vibrational cone angles (φ) in the model. φ angles extrapolated from these data, which correspond to experimentally determined mean radical pair distances of Dubinskii et al. (ca. 5.6 Å) and Iwasaki et al. (ca. 5.75 Å), are found to be close to φ angles calculated from hydrogen atom ejection theory. The Dubinskii et al. mean is thought to be the best determination, because the associated model φ angle (ca. φ = 15°) is the closest to φ* angles calculated for excited states of methane. The simple computer model thus supports the mechanism of radical pair formation in solid n-hydrocarbons and polyethylenes. In corroborating the theory for radical pair formation, the theory for polyene crosslinking termination reactions in amorphous polyethylenes irradiated in the presence of acetylene is also supported, because the mechanism requires the prior formation of radical pairs that are separated by distances of the order of those found by Dubinskii et al. The model is transferable to the study of radical-pair reactions in solid n-hydrocarbons irrespective of branching and density variations. A distribution function of radical pair distances from this model, which corresponds to the Dubinskii et al. experimentally determined mean distance, is given for amorphous HDPE. © 1996 John Wiley & Sons, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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