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  • Artikel  (17)
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  • 2000-2004  (11)
  • 1965-1969  (6)
  • Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft  (17)
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  • Artikel  (17)
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  • 1
    Digitale Medien
    Digitale Medien
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 13 (1965), S. 486-492 
    ISSN: 1520-5118
    Quelle: ACS Legacy Archives
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 14 (1966), S. 450-454 
    ISSN: 1520-5118
    Quelle: ACS Legacy Archives
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 123 (2004), S. 0 
    ISSN: 1439-0523
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Broccoli is well recognized as a source of glucosinolates and their isothiocyanate breakdown products. Glucoraphanin is one of the most abundant glucosinolates present in broccoli and its cognate isothiocyanate is sulphoraphane, a potent inducer of mammalian detoxication (phase 2) enzyme activity and anti-cancer agent. This study was designed to measure: glucosinolate levels in broccoli florets from an array of genotypes grown in several environments; the elevation of a key phase 2 enzyme, quinone reductase, in mammalian cells exposed to floret extracts; and total broccoli head content. There were significant environmental and genotype-by-environment effects on levels of glucoraphanin and quinone reductase induction potential of broccoli heads; however, the effect of genotype was greater than that of environmental factors. The relative rankings among genotypes for glucoraphanin and quinone reductase induction potential changed, when expressed on a per head basis, rather than on a concentration basis. Correlations of trait means in one environment vs. means from a second were stronger for glucoraphanin and quinone reductase induction potential on a per head basis than on a fresh weight concentration basis. Results of this study indicate that development of a broccoli phenotype with a dense head and a high concentration of glucoraphanin to deliver maximum chemoprotective potential (high enzyme induction potential/glucoraphanin content) is a feasible goal.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    Weed research 44 (2004), S. 0 
    ISSN: 1365-3180
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Classical Mendelian experiments were conducted to determine the genetics and inheritance of quinclorac and acetolactate synthase (ALS)-inhibitor resistance in a biotype of Galium spurium. Plants were screened with the formulated product of either quinclorac or the ALS-inhibitor, thifensulfuron, at the field dose of 125 or 6 g active ingredient (a.i.) ha−1 respectively. Segregation in the F2 generation indicated that quinclorac resistance was a single, recessive nuclear trait, based on a 1 : 3 segregation ratio [resistant : susceptible (R : S)]. Resistance to ALS inhibitors was due to a single, dominant nuclear trait, segregating in the F2 generation in a 3 : 1 ratio (R : S). The genetic models were confirmed by herbicide screens of F1 and backcrosses between the F1 and the S parent. F2 plants that survived quinclorac treatment set seed and the resulting F3 progeny were screened with either herbicide. Quinclorac-treated F3 plants segregated in a 1 : 0 ratio (R : S), hence F2 progenitors were homozygous for quinclorac resistance. In contrast, F3 progeny segregated into three ratios: 1 : 0, 3 : 1 and 0 : 1 (R : S) in response to ALS-inhibitor treatment. This segregation pattern indicates that their F2 parents were either homozygous or heterozygous for ALS-inhibitor resistance. Therefore, there were clearly two distinct resistance mechanisms encoded by two genes that were not tightly linked as demonstrated by segregation patterns of the F3.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 7 (1967), S. 0 
    ISSN: 1365-3180
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary. Pyrazon (5-amino-4-chIoro-2-phenyl-3(2H)-pyridazinonc) labelled with tritium in the phenyl ring, was applied to both the root and shoot of seedlings of red beet (Beta vulgaris L., cultivar Detroit Dark Red I, German millet (Setatra italica J.), and tomato (Lycopersicon esculentum Mill., cultivar Heinz 1350). Of these species, red best is tolerant, millet is moderately tolerant, and tomato is susceptible to pyrazon.When the roots were exposed to 1–325 ppm 3H-pyrazon in the nutrient solution, the greatest root absorption and transiocation to the shoot was observed in tomato and the least in red beet, while millet was intermediate.Applications to the first true leaf indicated that pyrazon was absorbed by the foliage of all three but that it was not transported basipetally. The absorption and translocation studies indicated that pyrazon mi transported primarily in the xylem.A radioactive metabolite of 3H-pyrazon was detected in the shoots of red beet, but there was no evidence for its presence in the shoots of the other two species. Since this metabolite is radioactive, its structure must contain at least some altered form of the phenyl ring which contained the tritium in the parent molecule. This differentiates it from 5-amino-4-chloro-pyridazinone, the previously proposed degradation product of pyrazon, since this compound lacks the phenyl ring.On the bash of these results, it is hypothesized that pyrazon will be phytotoxic if a suffic inn mm entration of the unaltered chemical reaches the site of herbicidal action in the shoot.Migration et métabolisme de la pyrazone dans les espéces rislstantes et sensibles
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Springer
    Potato research 8 (1965), S. 145-149 
    ISSN: 1871-4528
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Zwei Kartoffelsorten,Redskin undMajestic, wurden unter vier verschiedenen Bewässerungsverfahren kultiviert: 1. Keine Bewässerung. 2. Bewässerung vor der Knollenbildung; 3. Bewässerung nach der Knollenbildung; 4. Bewässerung während der Wachstumsperiode der Pflanzen. Beide Sorten erlitten den gr\:ossten Schaden durch die NacktschneekenMilax budapestensis(Hazay) undArion hortensis F\'er, wenn die Pflanzen bew\:assert wurden (Tabelle 1). Die Knollen der SorteRedskin waren st\:arker besch\:adigt als jene der SorteMajestic (Tabelle 2). Eine gr\:ossere Anzahl vonRedskin-Knollen wiesen mehr als zwei L\:ocher auf. Die Zeit der Anpflanzung beeinflusste das Ausmass des Schadens bei keiner Sorte in grossem Masse (Tabelle 3). Es wird auf m\:ogliche Erkl\:arungen f\:ur diese Unterschiede hingewiesen. Der Ertrag an unbesch\:adigten Knollen wurde durch die Bew\:asserung erh\:oht, obwohl der Schaden durch die Nacktschnecken ebenfalls zunahm (Tabelle 4). In dieser Hinsicht hatteMajestic mehr Nutzen von der Bew\:asserung alsRedskin.
    Kurzfassung: Résumé On a fait pousser deux variétés de Pomme de terre,Redskin etMajestic, dans quatre régimes différents d'alimentation en eau: 1. pas d'irrigation; 2. irrigation avant la formation des tubercules; 3. irrigation après la formation des tubercules; 4. irrigation pendant la période de croissance des plantes. Les limacesMilax budapestensis (Hazay) etArion hortensis Fér. causaient les plus grands dommages aux deux variétés quand les plantes étaient irriguées (Tableau 1). La variétéRedskin était plus sévèrement endommagée queMajestic (Tableau 2). Les tuberculesRedskin avaient la plus grande proportion de tubercules avec plus de deux cavités. Le moment de la plantation était sans importance pour les deux variétés (Tableau 3). L'auteur avance des explications à ropos dep ces différences. L'irrigation augmente la production de tubercules non endommagés même quand elle augmente les dégâts de limaces (Tableau 4). Sousce rapport la variétéMajestic plus que la variétéRedskin profitait de l'irrigation.
    Notizen: Summary Two varieties of potato,Redskin andMajestic, were grown with four water regimes;-unirrigated, irrigated before tuber formation, irrigated after tuber formation, and irrigated throughout the growing season. The damage done by slugs and the yields were measured. Both varieties suffered most damage from slugs when irrigated after the tubers started to form. MoreRedskin tubers were damaged thanMajestic and a greater proportion had more than two holes. Possible explanation for these differences are suggested. Yields of undamaged tubers were increased by irrigation even though damage by slugs increased. In this respectMajestic benefitted more thanRedskin from irrigation.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Publikationsdatum: 2003-06-01
    Beschreibung: Tree mortality is often the result of both long-term and short-term stress. Growth rate, an indicator of long-term stress, is often used to estimate probability of death in unburned stands. In contrast, probability of death in burned stands is modeled as a function of short-term disturbance severity. We sought to narrow this conceptual gap by determining (i) whether growth rate, in addition to crown scorch, is a predictor of mortality in burned stands and (ii) whether a single, simple model could predict tree death in both burned and unburned stands. Observations of 2622 unburned and 688 burned Abies concolor (Gord. & Glend.) Lindl. (white fir) in the Sierra Nevada of California, U.S.A., indicated that growth rate was a significant predictor of mortality in the unburned stands, while both crown scorch and radial growth were significant predictors of mortality in the burned stands. Applying the burned stand model to unburned stands resulted in an overestimation of the unburned stand mortality rate. While failing to create a general model of tree death for A. concolor, our findings underscore the idea that similar processes may affect mortality in disturbed and undisturbed stands.
    Print ISSN: 0045-5067
    Digitale ISSN: 1208-6037
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Publikationsdatum: 2004-12-01
    Print ISSN: 0013-0001
    Digitale ISSN: 1874-9364
    Thema: Biologie , Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Publiziert von Springer
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
    Publikationsdatum: 2000-07-01
    Print ISSN: 0011-183X
    Digitale ISSN: 1435-0653
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Publiziert von Wiley
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    Publikationsdatum: 2004-11-01
    Beschreibung: We assess the potential of increment coring, a common method for measuring tree ages and growth, to contribute to mortality. We used up to 21 years of annual censuses from two cored and two uncored permanent plots in the Sierra Nevada of California, to detect changes in mortality rates 12 years following coring for individuals 〉5 cm DBH from two coniferous species, Abies concolor (Gordon & Glend.) Lindl. (white fir) and Abies magnifica A. Murr. (red fir). Using a randomized before-after control impact (BACI) design, we found no differences in mortality rates following coring for 825 cored and 525 uncored A. concolor and 104 cored and 66 uncored A. magnifica. These results support the view that collecting tree cores can be considered nondestructive sampling, but we emphasize that our 12-year postcoring records are short compared with the maximum life-span of these trees and that other species in different environments may prove to be more sensitive to coring.
    Print ISSN: 0045-5067
    Digitale ISSN: 1208-6037
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Standort Signatur Erwartet Verfügbarkeit
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