Results 171 to 180 of about 2,386 (194)

Recessive resistance genes against potyviruses are localized in colinear genomic regions of the tomato (Lycopersicon spp.) and pepper (Capsicum spp.) genomes

Theoretical and Applied Genetics, 2002
Resistance against both Potato virus Y (PVY) and Tobacco etch virus (TEV) was identified in the wild tomato relative Lycopersicon hirsutum PI247087. Analysis of the segregation ratio in F(2)/F(3) and BC(1) interspecific progenies indicated that a single recessive gene, or two very tightly linked recessive loci, are involved in resistance to both ...
Parrella, G., Ruffel, S., Moretti, A., Morel, C., Palloix, A., Caranta, C.   +5 more
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Analysis of nuclear and organellar DNA of somatic hybrid calli and plants between Lycopersicon spp. and Nicotiana spp.

Molecular and General Genetics MGG, 1993
Protoplast fusion experiments between Lycopersicon esculentum or L. peruvianum and Nicotiana tabacum or N. plumbaginifolia were performed to investigate the possibility of producing symmetric and asymmetric somatic hybrids between these genera. These fusions, which involved 1.7 x 10(8) protoplasts, yielded 35 viable hybrid calli. Plant regeneration was
Wolters, A.M.A., Vergunst, A.C., van der Werff, F., Koornneef, M.   +3 more
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Physiological mechanism of tolerance of Lycopersicon spp. exposed to salt stress

Canadian Journal of Plant Science, 2000
The physiological mechanism of salt tolerance in Lycopersicon spp. was investigated. Ten Lycopersicon spp. were exposed to a gradual NaCl-induced decline in root zone water potential of −0.10 MPa d−1 for 10 d and maintained at −1.065 MPa (221.4 mM NaCl) for a period of 20 d. Growth, water relations and accumulation of ions and compatible solutes, such
Lada R. Rajasekaran, D. Aspinall, L. G. Paleg   +2 more
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The inheritance of chilling tolerance in tomato (Lycopersicon spp.)

Plant Biology, 2005
During the past 25 years, chilling tolerance of the cultivated (chilling-sensitive) tomato Lycopersicon esculentum and its wild, chilling-tolerant relatives L. peruvianum and L. hirsutum (and, less intensively studied, L. chilense) has been the object of several investigations.
Venema, JH, Linger, P, van Heusden, AW, van Hasselt, PR, Brueggemann, W   +4 more
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Cold tolerance in tomato. II. Early seedling growth of Lycopersicon spp.

Physiologia Plantarum, 1986
Hypocotyl and root growth elongation of etiolated seedlings was measured non‐destructively for the wild tomato accessions LA 460 (Lycopersicon chilense Dun.), PI 126435, PI 127831 and PI 127832 (L. peruvianum Mill.) and controls PI 120256 and T3 (L. esculentum Mill.) on slant boards at 10, 15 and 20°C.
S. Jeffrey Scott, R. A. Jones
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Competitive interactions of tomato (Lycopersicon esculentum) and nutsedges (Cyperusspp.)

Weed Science, 1997
Replacement series experiments were conducted under greenhouse conditions to evaluate effects of population densities and proportions on the intraspecific and interspecific interference of either purple nutsedge or yellow nutsedge with tomato cv. Sunny, under nonlimiting conditions of water and nutrients.
Bielinski M. Santos, Thomas A. Bewick, William M. Stall, Donn G. Shilling   +3 more
openaire   +1 more source

Sources of resistance in Lycopersicon spp. to a bipartite whitefly-transmitted geminivirus from Brazil

Euphytica, 2001
Accessions of Lycopersicon chilense, L. peruvianum, L.hirsutum and sixteen L. esculentum genotypes were evaluated undergreenhouse conditions for resistance to a whitefly-transmitted geminivirusisolate from Brasilia-DF (DF1). Artificial cage inoculation oftomato plants at the two true-leaf stage, using 20 viruliferous whiteflies perplant in individual ...
Flávio Martins Santana, Simone da Graça Ribeiro, Antônio Willians Moita, Domingos José Moreira, Leonardo de Brito Giordano   +4 more
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Survival and Development of Fruit Borer, Heliothis Armigera (Hübner), (Lepidoptera: Noctuidae) on Lycopersicon Spp.

International Journal of Tropical Insect Science, 1990
Nineteen accessions from seven Lycopersicon species were bioassayed for their resistance to Heliothis armigera (Hubner) (Lepidoptera: Noctuidae) in laboratory tests at 29 ± 1°C and 65 ± 2% r.h. Data on larval developmental duration (days), survival (%) and pupal weights (mg) revealed that maximum resistance to H.
R. K. Kashyap, M. K. Banerjee, null Kalloo, A. N. Verma   +3 more
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Salt tolerance in Lycopersicon spp. VII. Pleiotropic action of genes controlling earliness on fruit yield

Theoretical and Applied Genetics, 1999
The change from vegetative to reproductive development (earliness) in Lycopersicon chesmannii line L2 was delayed for 20 weeks when compared to other Lycopersicon species under greenhouse conditions. The interspecific hybrid of L. chesmannii L2 and L. esculentum E9, a cherry tomato cultivar, also showed this delay in reproductive development.
A. J. Monforte, M. J. Asíns, E. A. Carbonell   +2 more
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Pigweed (Amaranthus spp.) interference in transplanted tomato (Lycopersicon esculentum)

Journal of Horticultural Science, 1992
Interference of redroot pigweed (Amaranthus retroflexus L.) and prostrate pigweed (Amaranthus blitoides L.) in transplanted tomato (Lycopersicon esculentum Mill ‘GS12’) was studied in two field experiments in 1990 and 1991. Final yield was unaffected when the naturally occurring Amaranthus spp (mostly A. blitoides) were allowed to interfere with tomato
openaire   +1 more source