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  • 1
    Electronic Resource
    Electronic Resource
    Alterations in growth and chemical constituents of tobacco in response to carbon dioxide enrichment (1989)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 37 (1989), S. 552-555 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00086a060
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  • 2
    Electronic Resource
    Electronic Resource
    Quantitation of the major cuticular components from green leaf of different tobacco types (1984)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 32 (1984), S. 566-570 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00123a037
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of diet on longevity and fecundity of the spined stilt bug, Jalysus wickhami (1996)
    Springer
    Entomologia experimentalis et applicata 80 (1996), S. 421-425 
    Details
    ISSN: 1570-7458
    Keywords: Hemiptera ; Berytidae ; Cotesia congregata ; Braconidae ; tobacco hornworm ; Manduca sexta ; tobacco aphid ; Myzus nicotianae ; predation ; nutritional ecology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We evaluated the suitability of selected food items for the adult spined stilt bug, Jalysus wickhami Van Duzee (Hemiptera: Berytidae), by providing one of seven diet treatments: (1) prepupae of the parasitoid, Cotesia congregata (Say) (Hymenoptera: Braconidae), on a leaf of tobacco (Nicotiana tabacum L., ‘NC 2326’) (Solanaceae); (2) C. congregata prepupae alone (i.e., no tobacco leaf); (3) eggs of the parasitoid's host, Manduca sexta (L.) (Lepidoptera: Sphingidae), on a tobacco leaf; (4) M. sexta eggs alone; (5) tobacco aphids, Myzus nicotianae Blackman (Homoptera: Aphididae), on a tobacco leaf; (6) a tobacco leaf alone; and (7) no prey and no tobacco. A tobacco leaf was necessary for the long-term survival of stilt bugs, but prey source did not affect longevity. Regardless of the prey type, stilt bugs with access to a tobacco leaf lived 21–23 days, while stilt bugs without access to tobacco lived less than 12 days. Animal prey provided a protein source required for egg deposition in J. wickhami, and prey species differed in their relative nutritive values. Female stilt bugs that fed on M. sexta eggs or on C. congregata prepupae were significantly more fecund (102 and 106 nymphs per female, respectively) than females that fed on tobacco aphids (24 nymphs per female). Results suggest that stilt bugs may feed on tobacco aphids and C. congregata prepupae when other prey are unavailable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00188035
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  • 4
    Electronic Resource
    Electronic Resource
    When good bugs go bad: intraguild predation by Jalysus wickhami on the parasitoid, Cotesia congregata (1996)
    Springer
    Entomologia experimentalis et applicata 81 (1996), S. 271-276 
    Details
    ISSN: 1570-7458
    Keywords: intraguild predation ; predation ; Hemiptera ; Jalysus wickhami ; Cotesia congregata ; Manduca sexta ; tobacco ; biological control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We report a case of direct intraguild predation involving an insect predator and parasitoid in an agricultural system. The spined stilt bug, Jalysus wickhami Van Duzee, feeds on eggs of the tobacco hornworm, Manduca sexta L., and also on prepupal and pupal stages of the gregarious hornworm parasitoid, Cotesia congregata (Say). In two separate trials, mean mortality of attached parasitoids was significantly lower (66%, 73%) than that of their detached siblings (97%, 96%) after a 3 day exposure to stilt bugs, demonstrating that attachment to the host offered some protection against predation. In no-choice experiments, prepupal parasitoids suffered greater mortality (0 day-old=61%, 1 day-old=65%) than pupal parasitoids (2 day-old=50%, 3 day-old=14%). When offered in combination with 0 or 2 day-old hornworm eggs, respective mortality of 0, 1, 2 and 3-day-old pupal parasitoids showed a similar pattern (67%, 63%, 33% and 23%). In another experiment, mortality of 0-day-old pupal parasitoids (64%) was greater than that of 3 day-old pupal parasitoids (38%). Mortality of pupal parasitoids was not affected by the availability of hornworm eggs, a highly acceptable food. Younger pupal parasitoids (=prepupae) probably suffered greater mortality because they were more easily fed on by stily bugs than older (pupated) ones. Because C. congregata overwinters in the prepupal stage, it may be particularly vulnerable to attack late in the season when stilt bug populations are large and hornworm eggs are relatively uncommon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00187035
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  • 5
    Electronic Resource
    Electronic Resource
    Survival and Development of Tobacco Hornworm Larvae on Tobacco Plants Grown Under Elevated Levels of Ozone (2000)
    Springer
    Journal of chemical ecology 26 (2000), S. 1-19 
    Details
    ISSN: 1573-1561
    Keywords: Insecta ; tobacco hornworm ; Manduca sexta ; tobacco ; Nicotiana tabacum ; ozone ; weather fleck ; Lepidoptera ; Sphingidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Tobacco plants, Nicotiana tabacum were grown under different levels of ozone (O3) in open-top chambers. Ozone concentrations were established by charcoal filtration, which reduced O3 to approximately one-half ambient, or by the addition of O3 to unfiltered air to increase concentrations to approximately 1.4 or 1.7 times ambient O3. Survival of tobacco hornworm, Manduca sexta, larvae was increased when second instars were fed tobacco leaves grown in chambers with elevated levels of O3. Second instars also gained significantly more weight when they were fed for one week on plants exposed to elevated levels of O3 than when they were fed plants grown in charcoal-filtered air. Ozone-treated tobacco plants had higher levels of total nitrogen (primarily reduced nitrogen) and soluble carbohydrates (sugars), and lower levels of leaf-surface components, starch, nicotine, and rutin. Increased survival and growth response of hornworm larvae to elevated O3 levels in these experiments suggests that similar responses could occur in the southeastern US tobacco production areas where O3 levels can be high enough to injure tobacco plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005440025509
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  • 6
    Electronic Resource
    Electronic Resource
    Effects of cuticular duvane diterpenes from green tobacco leaves on tobacco budworm (Lepidoptera: Noctuidae) oviposition (1986)
    Springer
    Journal of chemical ecology 12 (1986), S. 1349-1359 
    Details
    ISSN: 1573-1561
    Keywords: Tobacco budworms ; Heliothis virescens (F) ; Lepidoptera ; Noctuidae ; tobacco ; Nicotiana tabacum L. ; diterpenes ; duvanes ; host plant resistance ; oviposition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Five cuticular chemical components isolated from the green leaves of tobacco introductions (TIs) and a commercial tobacco cultivar were tested for their effects on tobacco budworm,Heliothis virescens (F), oviposition in cage bioassays, and field experiments. These chemicals were sprayed onto budworm-resistant TI 1112 tobacco which produces low levels of most cuticular components. Individual duvane diterpenes (α- and β-4,8,13-duvatrien-1-ols and α- and β-4,8,13-duvatriene-1,3-diols) increased tobacco budworm egg laying on sprayed TI 1112 plants.cis-Abienol, docosanol, and docosanyl myristate were inactive.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012354
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  • 7
    Electronic Resource
    Electronic Resource
    Field tests of syntheticManduca sexta sex pheromone (1994)
    Springer
    Journal of chemical ecology 20 (1994), S. 579-591 
    Details
    ISSN: 1573-1561
    Keywords: Aldehydes ; formulation ; 10,12-hexadecadienal ; 10,12,14-hexadecatrienal ; moth ; Manduca sexta ; Lepidoptera ; Sphingidae ; tobacco hornworm ; trapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract In field experiments traps were baited with live females or with a two-, four-, or eight-component blend of the 16-carbon aldehydes previously identified as components of the sex pheromone emitted by femaleManduca sexta moths. The blends were formulated on rubber septa. Traps baited with a blend of all eight aldehydes captured moreM. sexta males than any other treatment. Septa loaded with 600 μg of the eight-component blend were attractive to males for about seven days in the field. Septa loaded with the eight-component blend and stored in a refrigerator at 4°C for a year released the conjugated diene and triene aldehydes at the same rate as freshly prepared septa and were equally attractive in the field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02059599
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  • 8
    Electronic Resource
    Electronic Resource
    Ovipositional response of tobacco budworm moths (Lepidoptera: Noctuidae) to cuticular labdanes and sucrose esters from the green leaves ofNicotiana glutinosa L. (Solanaceae) (1991)
    Springer
    Journal of chemical ecology 17 (1991), S. 2489-2506 
    Details
    ISSN: 1573-1561
    Keywords: Insecta ; Lepidoptera ; Noctuidae ; Heliothis virescens ; tobacco budworm ; Nicotiana ; ovipositional stimulants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Field plots of three accessions ofNicotiana glutinosa L. (Nicotiana species accessions 24, 24A, and 24B) at Oxford, North Carolina and Tifton, Georgia were heavily damaged by natural populations of tobacco budworms,Heliothis virescens (F.), during 1985–1989. Experiments in outdoor screen cages demonstrated that all accessions ofN. glutinosa were as prone to oviposition byH. virescens moths as was NC 2326, a commercial cultivar of flue-cured tobacco,N. tabacum L. However, in greenhouse experiments, tobacco budworm larvae did not survive or grow as well when placed on plants ofN. glutinosa as they did when placed on plants of NC 2326. Four labdane diterpenes (manool, 2-hydroxymanool, a mixture of sclareols, and labda-13-ene-8α,15-diol [labdenediol]) and two sucrose ester fractions (2,3,4-tri-O-acyl-3′-O-acetyl-sucrose [G-SE-I] and 2,3,4,-tri-O-acyl-sucrose [G-SE-II]) were isolated from green leaves of the three accessions ofN. glutinosa. These components were bioassayed for their effects on the ovipositional behavior of tobacco budworm moths using small screen cages in a greenhouse at Oxford, North Carolina. Labdenediol, manool, and both sucrose ester fractions stimulated tobacco budworm moths to oviposit on a tobacco budworm-resistant Tobacco Introduction, TI 1112 (PI 124166), when these materials were sprayed onto a leaf.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994597
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  • 9
    Electronic Resource
    Electronic Resource
    Identification of a pheromone blend attractive to Manduca sexta (L.) males in a wind tunnel (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Archives of Insect Biochemistry and Physiology 10 (1989), S. 255-271 
    Details
    ISSN: 0739-4462
    Keywords: insect behavior ; aldehydes ; 10 ; 12 ; 14-hexadecatrienal ; tobacco hornworm ; Sphingidae ; Chemistry ; Food Science, Agricultural, Medicinal and Pharmaceutical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Analyses of solvent rinses of the external surfaces of pheromone glands excised from calling female tobacco hornworm moths, Manduca sexta (L.), revealed the presence of the following compounds: (Z)-9-hexadecenal, (Z)-11-hexadecenal, (E)-11-hexadecenal, hexadecanal, (E,Z)-10,12-hexadecadienal, (E,E)-10,12-hexadecadienal, (E,E,Z)-10,12,14-hexadecatrienal, (E,E,E,)-10,12,14-hexadecatrienal, (Z)-11-octadecenal, (Z)-13-octadecenal, octadecanal, and (Z,Z)-11,13-octadecadienal. The two trienals were identified by mass and PMR spectral analyses and by ozonolyses, and their structures were confirmed by synthesis. In a wind tunnel male tobacco hornworm moths exhibit the same behaviors in response to a synthetic blend of all of the components, the gland rinse, or a calling female. Both (E,Z)-10,12-hexadecadienal and (E,E,Z)-10,12,14-hexadecatrienal are required to stimulate males to complete the characteristic behavioral sequence: anemotaxis, approaching and touching the pheromone source, and bending their abdomens in apparent copulatory attempts. The other components of the blend may play more subtle roles.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/arch.940100402
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  • 10
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    Unknown
    Evaluation of the USDA sweetpotato [Ipomoea batatas (L.) Lam.] germplasm collection for tolerance to the herbicide clomazone (2020)
    Springer
    Details
    Publication Date: 2020-03-21
    Print ISSN: 0925-9864
    Electronic ISSN: 1573-5109
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Springer
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