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Showing 1 to 20 of 39 for “"Nicotiana tabacum L."”.
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Genetic analysis of resistance to Myzus persicae (Sulzer) in Nicotiana tabacum L.
Field experiments with the green peach aphid on tobacco were conducted at Blackstone, Virginia in 1983 and 1984. The objectives were to: 1) confirm and identify source materials resistant to the green peach aphid; 2) study the inheritance of aphid resistance; 3) verify heritability of resistant …
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Peningkatan viabilitas benih tembakau (Nicotiana tabacum L) dengan osmoconditiong polyethilene glikol (PEG) 6000
… bahwa ada Peningkatan viabilitas benih tembakau (Nicotiana tabacum L), yaitu pada daya kecambah, mempercepat waktu berkecambah, panjang hipokotil, dan panjang akar. Pada konsentrasi rendah sampai 10 ppm, PEG bisa meningkatkan viabilitas benih tembakau. Perlakuan lama perendaman dalam larutan PEG …
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Der Einfluß des primären Stickstoffstoffwechsels auf den Aminosäure- und Sekundärstoffwechsel in Nicotiana tabacum L.
Es ist bekannt, dass Änderungen im Kohlenstoff- bzw. Stickstoffstaus der Pflanzen zu einer parallelen statt reziproken Änderung der kohlenstoff- und stickstoffhaltigen Primärmetabolite führen. Unter diesem Gesichtspunkt wurden in der vorliegenden Arbeit der Aminosäurestoffwechsel und der …
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Quantification of tobacco aphid, Myzus nicotianae Blackman, injury to flue-cured tobacco, Nicotiana tabacum (L.)
… to measure the impact of tobacco aphid, Myzus nicotianae Blackman, colonization and cumulative aphid-days on flue-cured tobacco, Nicotiana tabacum (L.). The objectives of the study included quantifying the response of tobacco production variables, cured leaf quality, and cured leaf chemical …
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Efecto de la distancia de siembra en el rendimiento de dos variedades de tabaco (Nicotiana tabacum L.) burley
… cantidad y calidad de dos variedades de tabaco (Nicotiana tabacum L.) Burley KY-17 y Burley TN-90. Se empleó un diseño experimental de Bloques al Azar con arreglo combinatorio bifactorial. Los resultados obtenidos no demostraron diferencias significativas en los rendimientos por unidad de área …
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Tracking Tobacco Mosaic Virus Infection from Infected Seeds to Seedlings Confirms Seed Transmission in Tobacco (Nicotiana tabacum L.)
The Tobacco mosaic virus (TMV) is a positive sense single stranded RNA virus and is found across the world. TMV can impact the overall yield and quality of the crop resulting in an economic loss. Plants that are infected with TMV show a variety of symptoms such as mosaic pattern, mottling, necrotic …
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Induced disease resistance elicited by acibenzolar-S-methyl and plant growth-promoting rhizobacteria in tobacco (Nicotiana tabacum L.)
… response. Tobacco cyst nematode (TCN; Globodera tabacum solanacearum) is one of the most destructive pathogens of tobacco in Virginia. Among four PGPR combinations tested, a mixture of Bacillus amyloliquefaciens IN937a (GB99) and B. subtilis A13 (GB122) most consistently suppressed TCN …
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Determinación de los niveles críticos fósforo, potasio y curva de respuesta al nitrógeno, en el cultivo de tabaco (Nicotiana tabacum L)
Durante el cíclo agrícola 1990-1991 se realizaron 38 experimentos en las localidades de Jalapa, Condega y Estelí, con el objetivo de determinar el nivel crítico para el Fósforo y el Potasio, además de la curva de respuesta al Nitrógeno en el cultivo de tabaco. El diseño experimental usado fue el de …
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Estudios preliminares para determinar las causas que provocan la mancha verde en los tabacos negros (Nicotiana tabacum L.) en la región I
… trabajos de investigación en el tabaco negro (Nicotiana. ta.ba.cum L.) variedad S-98, con el objetivo de estudiar las causas que provocan la mancha verde. El estudio se inició en el ciclo 1986-1987 con tres trabajos simultáneos ubicados en Esteli y Jalapa, uno a nivel de macetera para …
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Efecto de tres distancias de siembra sobre el rendimiento de tres variedades de tabaco habano (Nicotiana tabacum L.), en el municipio de Condega, Esteli
El presente estudio se desarrolló en la finca Cerro Azul, Comunidad de San Pedro, municipio de Condega, Estelí, situado a 620 msnm, 14° 72' 24'' Latitud Norte y 86° 56' 30'' Longitud Oeste, con el objetivo de evaluar el efecto de tres distancia de siembra de siembra (30.48, 35.56 y 40.64 cm) sobre …
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Regulation of Glucanohydrolases in Nicotiana Tabacum on the Messenger-Rnalevel (beta-1,3-Glucanase, Chitinase, Cytokinin, Auxin, Complementary-Dna Clone)
… and chitinase in cultured tobacco (Nicotiana tabacum L. cv. Havana 425) tissues is inhibited by the hormones auxin and cytokinin. As judged by immunosorption and partial proteolysis of the in vitro translation products, poly(A)+ RNA from tobacco tissues grown on hormone-free medium …
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Multi-omic profiling of NPQ improved nicotiana tabacum lines under uniform light conditions
… & PSBS) using an Arabidopsis T-DNA cassette in Nicotiana tabacum L. (tobacco) has been shown to improve the rate of NPQ relaxation, resulting in yield increases under both greenhouse and field conditions (Kromdijk et al., 2016). However, the pleiotropic effects of this gene manipulation have yet …
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Genetic differentiation of the parasitoid, Cotesia congregata (Say), based on host-plant complex
… complexes, Manduca sexta L. on tobacco (Nicotiana tabacum L.) and Ceratomia catalpae, (Haworth) on catalpa (Catalpa bignonioides Walker), in the mid-Atlantic region of North America using seven microsatellite loci and the mitochondrial COI locus. Microsatellite allele frequencies were …
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Quantitative analysis of individual flue-cured tobacco seed tissues reveals Tobacco mosaic virus infection in embryos
… quality and yield in commercially grown tobacco (Nicotiana tabacum L.). The virus is transmitted mechanically, although infections have been associated with contaminated seeds with the seed coat being the source of virus. Thus, TMV transmission is said to be seedborne (as opposed to true seed …
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Factors affecting the population dynamics of the green peach aphid, Myzus persicae (Sulzer), on flue-cured tobacco in Virginia
… (Sulzer), was compared on flue-cured tobacco, Nicotiana tabacum (L.), at moderate to high constant temperatures in the laboratory. The red morph was found to develop faster and reproduce more than the green morph at temperatures that promoted the most rapid population growth of either morph. In …
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Strip-till flue-cured tobacco production in Virginia
Flue-cured tobacco (Nicotiana tabacum L.) is an intensively cultivated crop that typically receives four to eight primary tillage passes before being transplanted on a raised row-ridge. Strip-tillage, a conservation tillage system that only requires tilling a small strip before transplanting, has …
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Inheritance of Resistance to Tobacco Cyst Nematode Globodera tabacum solanacearum
The tobacco cyst nematode [Globodera tabacum solanacearum (Miller & Gray, 1972) Behrens, 1975] is an important pathogen affecting flue-cured tobacco (Nicotiana tabacum L.) in Virginia, North Carolina, and Maryland. The resistant cultivars Coker 371 Gold and Kutsaga 110 were evaluated during 1999 …
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Controlling Tobacco Mosaic Virus in Tobacco through Resistance
… virus (TMV) infects all classes of tobacco (Nicotiana tabacum L.) and causes losses worldwide. The N gene is the most effective means of controlling TMV; however, this gene is associated with reduced yield and quality in flue-cured tobacco. The mode of inheritance of TMV resistance was …
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Evaluating the use of renewable fuel sources to heat flue-cured tobacco barns
The curing of flue-cured tobacco (Nicotiana tabacum L.) is an energy intensive process and represents a significant portion of the overall cost of production. Given the goal of the industry to reduce the environmental footprint of tobacco production and the energy demand of curing, attention has …
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