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  • 1
    Monograph available for loan
    Monograph available for loan
    Advances in enviromental modelling : proceedings of a symposium held from 22nd to 26th june, 1987 in venice, italy, sponsored by the international society for ecological modelling (ISEM) (1988)
    Amsterdam [u.a.] : Elsevier
    Associated volumes
    Details Availability
    Call number: PIK M 370-92-0507
    In: Developments in environmental modelling
    Type of Medium: Monograph available for loan
    Pages: 691 p.
    ISBN: 0444988947 , 0-444-41948-9
    Series Statement: Developments in environmental modelling
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 2
    Electronic Resource
    Electronic Resource
    Heterogeneity among the uniform-size fragments obtained from TMV-RNA
    Amsterdam : Elsevier
    Archives of Biochemistry and Biophysics 139 (1970), S. 450 
    Details
    ISSN: 0003-9861
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0003-9861(70)90499-6
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  • 3
    Electronic Resource
    Electronic Resource
    THE INFLUENCE OF DALAPON ON GROWTH AND DEVELOPMENT OF AUTUMN-SOWN SUGAR BEET (1964)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 4 (1964), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary. In order to determine the phytotoxicity of dalapon—sodium to October-sown sugar beet in southern Israel, a substantially weed-free field was sprayed on three dates with 1·1, 2·2, 4·5 and 9·0 kg/ha a.e. Samples of beet were taken on five dates between February and July. The 9–0 kg/ha rate of dalapon caused a significant reduction in the weight of both roots and the other beet components. At 4·5 kg/ha phytotoxic effects were less marked. It is concluded that dalapon at rates lower than 4·5 kg/ha, applied between mid-November and mid-January, should be a safe treatment for October-sown sugar beet where grasses rather than broad-leaved weeds predominate.Effet du dalapon sur la croissame ei lé développement de la betterave sucrière semée en automne
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3180.1964.tb00291.x
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  • 4
    Electronic Resource
    Electronic Resource
    Alternaria alternata in cotton (Gossypium hirsutum) cv. Acala: Effects on gas exchange, yield components and yield accumulation (1989)
    Springer
    European journal of plant pathology 95 (1989), S. 157-166 
    Details
    ISSN: 1573-8469
    Keywords: photosynthesis ; transpiration ; crop loss assessment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Samenvatting Het effect vanAlternaria alternata op fotosynthese en transpiratie, opbrengstcomponenten en totale opbrengst bij katoen (Gossypium hirsutum L.) werd onderzocht onder veldomstandigheden. Verschillen in aantastingsniveaus werden verkregen door fungicide (fentin acetaat) behandelingen. De ziekte ontwikkelde zich het snelst boven in het gewas (〉 60 cm). Infectie ging niet gepaard met bladval. Het belangrijkste effect van de ziekte vormde een afname van het aantal vruchtdozen (‘bolls’). Een significante toename van zaadkatoen (‘seedcottton’) en van vezels (‘lint’) ten opzichte van de onbehandelde controle werd verkregen door toediening van fungiciden. Achterwege laten van vroege en late bestrijdingen had geen significante opbrenstverlaging tot gevolg.A. alternata verlaagde de fotosynthesesnelheid meer en de transpiratiesnelheid minder dan verklaard kon worden uit de geïnfecteerde oppervlakte van het blad.
    Notes: Abstract The effect ofAlternaria alternata on gas exchange proceses, on total yield and on yield components in cottonGossypium hirsutum cv. Acala SJ-2, was examined under field conditions. Variations in disease severity levels were achieved by using three fungicide treatments (Fentin Acetate). Disease developed more rapidly on the upper canopy layer (〉661 cm height) than on lower ones. Infections were not accompanied by leaf shedding. The main effect of the disease was a reduction on bolls' number. A significant increase in seedcotton and lint yield, as compared to the untreated control, was achieved by applying fungicides. It was found that omitting early and late applications was not followed by significant yield reduction. Alternaria leaf spot reduced photosynthetic rate more and transpiration rate less, than could be explained by the extent of infected leaf area alone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01999971
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  • 5
    Electronic Resource
    Electronic Resource
    A prediction of developmental stages in potato plants based on the accumulation of heat units
    Amsterdam : Elsevier
    Agricultural Systems 43 (1993), S. 35-50 
    Details
    ISSN: 0308-521X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0308-521X(93)90091-F
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  • 6
    Electronic Resource
    Electronic Resource
    Simulation of the effect of drought stress on the rate of photosynthesis in cotton
    Amsterdam : Elsevier
    Agricultural Systems 42 (1993), S. 327-341 
    Details
    ISSN: 0308-521X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0308-521X(93)90098-M
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  • 7
    Electronic Resource
    Electronic Resource
    Breeding tomatoes for salt tolerance: inheritance of salt tolerance and related traits in interspecific populations (1992)
    Springer
    Theoretical and applied genetics 84 (1992), S. 390-396 
    Details
    ISSN: 1432-2242
    Keywords: Salt tolerance ; Lycopersicon esculentum ; L. pennellii ; Heritability ; Genetic correlation ; Selection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Interspecific segregating populations derived from a cross between tomato (Lycopersicon esculentum) cv ‘M82-1 -8’ (M82) and the wild species L. pennellii accession LA-716 (Lpen716) were used to study the genetic basis of salt tolerance and its implications for breeding. BC1 (M82 x (M82 x Lpen716)) and BC1 S1 (progenies of selfed BC1 plants) populations were grown under arid field conditions and irrigated with water having electrical conductivities of 1.5 (control), 10 and 20 dSm-1. The evaluation of salt tolerance was based on total fruit yield (TY), total dry matter (TD) and TD under salinity relative to the control (RD). Sodium, potassium and chloride concentrations were measured in the leaves and stems. The methods for estimating heritability were adapted to BC1 plants and BC1S1 families. TY, TD and RD had heritability estimates of 0.3–0.45, indicating that salt tolerance can be improved by selection. Genetic correlations between traits indicated that high yield may be combined with salt tolerance and that ion contents are not likely to provide an efficient selection criteria for salt tolerance. Genetic correlations between performances under various salinity levels suggested that similar mechanisms affect the responses to salinity treatments of 10 and 20 dSm-1. Responses to “paper” selection confirmed that salt tolerance of the tomato may be improved by selection, and that this selection should be based on dry matter and yield parameters under salinity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00229498
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  • 8
    Electronic Resource
    Electronic Resource
    Simulation of response of small self-fertilizing populations to selection for quantitative traits: I. Effect of number of loci, selection intensity and initial heritability under conditions of no dominance (1975)
    Springer
    Theoretical and applied genetics 46 (1975), S. 221-231 
    Details
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A genetic system was simulated in order to evaluate the effects of selection intensity and initial heritability on the genetic advance in a small population reproducing by selfing. A constant number of 40 individuals was measured in each generation. A quantitative trait was assumed to be controlled by 15, 30 or 60 independently segregating loci with equal additive effects, no dominance and no epistasis. It was found that the genetic advance in each generation, and the maximum possible genetic advance, expressed in actual units of measurement, were larger when fewer loci were assumed to control the trait, or when the initial heritability was higher. When the results were expressed on the basis of the initial phenotypic standard deviation, the genetic advance was smaller when 15 loci were assumed to control the trait than when more loci were assumed. An intense selection of 0.05 was most effective when selection was practised for a few generations. When selection was continued for more generations, a selection of 0.10 to 0.25 was found to be more effective. This occurred earlier when fewer loci were assumed to control the trait, or when the initial heritability was lower. The maximum possible genetic advance was attained in most cases by a selection intensity of 0.20 to 0.25. The additive genetic variance was decreased by selection at a faster rate, and its fixation occurred earlier, when fewer loci were assumed to control the trait, when selection was more intensive, or when the initial heritability was higher. The decrease of heterozygosity occurred at a faster rate when selection was more intensive or when the initial heritability was higher.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00289373
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  • 9
    Electronic Resource
    Electronic Resource
    The inheritance of resistance to blue mold (Peronospora tabacina Adam) in two cultivars of tobacco (Nicotiana tabacum L.) (1972)
    Springer
    Euphytica 21 (1972), S. 97-105 
    Details
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Two blue-mold resistant cultivars of Nicotiana tabacum L. were crossed with each other and with the susceptible Israeli local cultivar Mikhal. F1, F2 and F3 progenies of these crosses, F1 and F2 of backcrosses and the parental varieties were grown in a series of experiments, in which the seedlings were exposed to heavy natural infection with Peronospora tabacina Adam. The genetic basis of resistance was found to be identical in the two resistant strains Bel-61-10 and Chemical mutant. A single dominant major gene determined the segregation of resistance versus susceptibility in the crosses of these strains with Mikhal. The level of resistance of resistant segregates was shifted by environment and by quantitatively modifying genes. The index of resistance, which was calculated as a weighted mean of the degree of blue-mold expression of the resistant segregates, differed in the generations of cross progeny. This could be explained by the different expected levels of the modifying genes in these generations. Heritability of the index of resistance was calculated by parent-offspring regression and it was found to be 0.542 in the F3 and 0.227 in F2 backcross progenies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00040553
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  • 10
    Electronic Resource
    Electronic Resource
    Growth and NPK uptake of high-yielding cotton grown at different nitrogen levels in a permanent-plot experiment (1987)
    Springer
    Plant and soil 103 (1987), S. 39-44 
    Details
    ISSN: 1573-5036
    Keywords: dry matter ; growth ; N-fertilizer rates ; NPK uptake ; seed cotton
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Growth and N, P, K uptake of Acala SJ-2 cotton (Gossypium hirsutum) were investigated in an irrigated permanent-plot field (Typic chromoxerert) at Bet Dagan, Israel, under semi-arid conditions using different nitrogen levels: 0, 60, 120, 180 and 240 kg N ha−1. The total dry matter accumulation at these levels was 9.0, 10.7, 15.1, 17.1 and 15.6 ton ha−1, respectively. The uptake of N, P and K was 110, 144, 267, 322 and 301 kg N ha−1∶31, 34, 46, 44 and 38 kg P ha−1; and 120, 151, 208, 251 and 230 kg K ha−1, respectively. Dry matter production, as well as N, P, K uptake by the cotton plants were greatly increased by raising the N application levels to 120 or 180 kg N ha−1, but the pattern of accumulation and relative distribution of dry matter and NPK among plant organs were not considerably affected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02370665
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