Results 11 to 20 of about 1,050 (167)

Divergência genética e subcoleção representativa de populações da traça-do-tomateiro Genetic divergence and representative tomato pinworm populations subcollection

open access: yesPesquisa Agropecuária Brasileira, 2004
O objetivo deste trabalho foi estudar a divergência genética e propor uma subcoleção representativa da traça-do-tomateiro, Tuta absoluta (TDT). O experimento foi conduzido com quatro populações do inseto procedentes de Uberlândia, MG, Viçosa, MG, Camocim
Gisele Rodrigues Moreira   +4 more
doaj   +1 more source

Temperature and Photoperiod Influence Trichome Density and Sesquiterpene Content of Lycopersicon hirsutum f. hirsutum [PDF]

open access: yesPlant Physiology, 1992
Resistance to Colorado potato beetle in a clone of Lycopersicon hirsutum f. hirsutum L. is attributed to the presence of the sesquiterpene zingiberene in the type VI leaf trichomes; however, both day/night temperature regimen and photoperiod affect zingiberene content and trichome density.
T J, Gianfagna   +2 more
openaire   +2 more sources

EFEITO DE TRICOMAS, ALELOQUÍMICOS E NUTRIENTES NA RESISTÊNCIA DE LYCOPERSICON HIRSUTUM À TRAÇA-DO-TOMATEIRO EFFECT OF TRICHOMES, ALELLOCHEMICALS AND MINERALS ON THE RESISTANCE OF LYCOPERSICON HIRSUTUM TO TOMATO LEAF MINER

open access: yesPesquisa Agropecuária Brasileira, 1999
Estudos foram conduzidos com o objetivo de verificar o efeito de tricomas, aleloquímicos e nutrientes nas folhas de partes do dossel das plantas na resistência de Lycopersicon hirsutum à traça- do-tomateiro, Tuta absoluta (Lepidoptera: Gelechiidae ...
GERMANO LEÃO DEMOLIN LEITE   +3 more
doaj   +1 more source

TRICHOME-MEDIATED RESISTANCE TO ARTHROPODS IN LYCOPERSICON HIRSUTUM [PDF]

open access: yesHortScience, 1990
Breeding for resistance to insects and other arthropod pests in vegetables has been a difficult endeavor. Greater public awareness of health and environmental issues requires that we as horticultural scientists reexamine why breeding for resistance has been difficult.
openaire   +1 more source

PRODUCTION OF SOMATIC HYBRIDS BETWEEN LYCOPERSICON HIRSUTUM AND L. ESCULENTUM. [PDF]

open access: yesHortScience, 1991
Unilateral incompatibility has limited the direction of crossing between L. esculentum and L. hirsutum ; the latter can only serve as the pollen parent. In an attempt to introduce the L. hirsutum cytoplasm into
T.J. Montagno, P.S. Jourdan, S. Z. Berry
openaire   +1 more source

Relação entre zingibereno, tricomas foliares e repelência de tomateiros a Tetranychus evansi Relationship between zingiberene, foliar trichomes and repellence of tomato plant to Tetranychus evansi

open access: yesPesquisa Agropecuária Brasileira, 2006
O objetivo deste trabalho foi quantificar os teores de zingibereno em populações segregantes (F2) do segundo retrocruzamento para Lycopersicon esculentum a partir da espécie selvagem L. hirsutum var. hirsutum, e verificar a relação entre estes teores e a
Luciano Donizete Gonçalves   +7 more
doaj   +1 more source

Genetic Control and Evolution of Sesquiterpene Biosynthesis in Lycopersicon esculentum and L. hirsutum [PDF]

open access: yesThe Plant Cell, 2000
Segregation analysis between Lysopersicon esculentum (cultivated tomato) and L. hirsutum (wild form) in conjunction with positional verification by using near-isogenic lines demonstrated that biosynthesis of two structurally different classes of sesquiterpenes in these species is controlled by loci on two different chromosomes. A locus on chromosome 6,
R S, van Der Hoeven   +4 more
openaire   +2 more sources

Efeito de aleloquímicos em tricomas foliares de tomateiro na repelência a ácaro (Tetranychus urticae Koch.) em genótipos com teores contrastantes de 2-tridecanona [PDF]

open access: yesActa Botânica Brasílica, 2002
Com o objetivo de avaliar a ação de repelência a ácaro Tetranychus urticae Koch. em folíolos de tomateiro com altos teores do aleloquímico 2-tridecanona (2-TD) associado a tricomas glandulares, utilizaram-se linhagens avançadas 'TOM 600' e 'TOM 601 ...
Carlos Alberto Aragão   +2 more
doaj   +1 more source

Sensitivity of Altitudinal Ecotypes of the Wild Tomato Lycopersicon hirsutum to Chilling Injury [PDF]

open access: yesPlant Physiology, 1989
The transition temperature of the leaf polar lipids and the critical temperature for chill-induced inhibition of photosynthesis was determined for three altitudinal ecotypes of the wild tomato Lycopersicon hirsutum. Photosynthesis was measured as CO(2)-dependent O(2) evolution at 25 degrees C after leaf slices were exposed to chilling temperatures for ...
J K, Raison, M A, Brown
openaire   +2 more sources

The Cf-4 and Cf-9 Resistance Genes Against Cladosporium fulvum are Conserved in Wild Tomato Species

open access: yesMolecular Plant-Microbe Interactions, 2005
The Cf-4 and Cf-9 genes originate from the wild tomato species Lycopersicon hirsutum and L. pimpinellifolium and confer resistance to strains of the leaf mold fungus Cladosporium fulvum that secrete the Avr4 and Avr9 elicitor proteins, respectively ...
Marco Kruijt   +4 more
doaj   +1 more source

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