Results 101 to 110 of about 1,341 (203)

Effect of genotypes of Lycopersicon spp. on Phthorimaea operculella (Zeller, 1873) and toxicity of allelochemicals 2-tricanone and 2-undecanone

open access: yes, 1992
Estudou-se o efeito de genótipos de Lycopersicon spp. sobre a traça P. operculella e a toxicidade do 2-tridecanona e 2-undecanona, visando avaliar o potencial desses aleloquímicos como fator de resistência a esta praga em tomateiro. Inicialmente avaliou-
Ventura, Mauricio Ursi
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Identification and mapping of quantitative resistance to late blight (Phytophthora infestans) in Solanum habrochaites LA1777

open access: yes, 2011
Late blight (Phytophthora infestans) can have devastating effects on tomato production over the whole world. Most of the commercial cultivars of tomato, Solanum lycopersicum, are susceptible.
Visser, R.G.F.   +5 more
core   +1 more source

Effect of the chemical composition of Lycopersicon hirsutum f. glabratum (PI 134417) on tomato leaf miner Tuta absoluta

open access: yes, 1998
Tridecan-2-ona (2-TD) e undecan-2-ona (2-UD), presentes no tomateiro- selvagem Lycopersicon hirsutum f. glabratum (PI 134417), atuam como principais fatores de resistência a diversas pragas do gênero Lycopersicon, nos EUA.
Magalhães, Sérgio Tinôco Verçosa de
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Número de ínstares larvais de Tuta absoluta (Meyrick) em genótipos de tomateiro

open access: yesScientia Agricola, 2002
A traça Tuta absoluta (Meyrick) é uma das principais pragas do tomateiro no Brasil e tem sido controlada quase que exclusivamente com inseticidas, o que é indesejável tanto por motivos econômicos quanto ambientais.
Giustolin Teresinha Augusta   +2 more
doaj  

Attractancy and Ovipositional Response of Adult Bemisia argentifolii (Homoptera: Aleyrodidae) to Type IV Trichome Density on Leaves of Lycopersicon hirsutum Grown in Three Day-Length Regimes

open access: yes, 1998
Clonal plants of six accessions of Lycopersicon hirsutum Humb. and Bonpl., a wild relative of tomato, were grown in three day-length regimes. Clones of an accession grown in different day-length regimes were genetically identical but differed in density ...
Alvin M. Simmons   +2 more
core   +1 more source

CARACTERIZACIÓN MORFOAGRONÓMICA Y BIOQUÍMICA DE 20 ACCESIONES DE TOMATE (Lycopersicon spp)

open access: yesCultivos Tropicales, 2002
El presente trabajo se desarrolló en áreas del Instituto Nacional de Ciencias Agrícolas (INCA), con el objetivo de realizar la caracterización morfoagronómica e isoenzimática de 20 accesiones de tomate incluidas variedades comerciales y especies ...
Marilyn Florido   +6 more
doaj  

Reaction of Lycopersicon cultivars and wild accessions to tomato leaf curl virus

open access: yes, 1991
1201 tomato cultivars, breeding lines and accessions of Lycopersicon species were screened for tomato leaf curl virus (TLCV) under field and laboratory conditions during summer seasons of 1986 to 1989. Two lines of L.
Shivashankar, G.   +6 more
core   +1 more source

Phytochemicals for Pest Control

open access: yes, 2018
Several wild tomato accessions of Lycopersicon hirsutum that are not consumed by humans were planted under greenhouse conditions for mass production of leaves. The foliage of the wild tomato Lycopersicon hirsutum f. glabratum (Mull); L.
Nimoh-Boateng, Daddy
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