Lettuce Seeds
Mostrando 1-12 de 100 artigos, teses e dissertações.
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1. Early flowering, genetic dissimilarity and clustering of lettuce cultivars with thermoinhibition tolerant seeds
RESUMO As altas temperaturas interferem no cultivo da alface. A termoinibição da germinação das sementes e florecimento precoce causam perdas importantes para os produtores. Os objetivos deste trabalho foram avaliar a tolerância ao florescimento precoce, verificar a dissimilaridade genética e selecionar cultivares de alface tolerantes à termoinibiçã
Horticultura Brasileira. Publicado em: 2022
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2. Salt stress alleviation by seed priming with silicon in lettuce seedlings: an approach based on enhancing antioxidant responses
ABSTRACT Seed germination and seedling growth are the stages most sensitive to salt stress, which can induce ion-specific effects and oxidative stress. Although silicon (Si) has been known to improve plant defense systems against stressful-conditions, little is known about seed priming with Si and mechanisms of Si-mediated alleviation of salt stress in seedl
Bragantia. Publicado em: 2020-03
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3. Torulaspora globosa: rhizosphere yeast promoting lettuce growth on seedlings and under field conditions
RESUMO Micro-organismos promotores de crescimento vegetal (MPCV) auxiliam as plantas pela produção de fitormônios, disponibilização de nutrientes e manutenção da sanidade vegetal. Dentre os MPCV, as leveduras apresentam grande potencial ainda inexplorado. O objetivo deste trabalho foi avaliar a inoculação da levedura rizosférica Torulaspora globos
Hortic. Bras.. Publicado em: 07/11/2019
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4. Yield and quality of seeds of lettuce genotypes produced under organic management
Resumo: A alface é uma das principais espécies de hortaliças utilizadas na produção orgânica, porém, os estudos e pesquisas na área de orgânicos são considerados escassos. O objetivo do estudo foi avaliar a produtividade e qualidade de sementes de genótipos de alface produzidas em dois anos consecutivos no sistema de manejo orgânico. Foram instal
J. Seed Sci.. Publicado em: 09/09/2019
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5. Growth promotion and productivity of lettuce using Trichoderma spp. commercial strains
RESUMO O objetivo deste trabalho foi avaliar quatro cepas de Trichoderma spp. (T. harzianum IBLF 006 WP, T. harzianum IBLF 006 SC, T. harzianum ESALQ 1306 e T. asperellum URM 5911) na promoção do crescimento de plântulas em laboratório e na produtividade de alface americana em campo. O delineamento experimental foi inteiramente casualizado com quatro tra
Hortic. Bras.. Publicado em: 15/04/2019
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6. Automation of lettuce seedlings irrigation with sensors deployed in the substrate or at the atmosphere
ABSTRACT: Seedling production is an important step in the lettuce production system. However, there is a tendency to apply excessive irrigation at this stage. The aim of this study was to test the use of the Simplified Irrigation Controller (SIC) under two conditions: first, with the sensor installed in the substrate (measuring the soil water tension) and se
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-04
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7. A study of the phytotoxic effects of the aerial parts of Senecio westermanii Dusén (Asteraceae) on Lactuca sativa L. and Allium cepa L. seeds
The objective of this study was to evaluate the effects of the ethanolic crude extracts and fractions of the species Senecio westermanii Dusén on Lactuca sativa L. (lettuce) and Allium cepa L. (onion) seeds. We assessed the germination, growth, root respiration and photosynthesis of the target species in Petri dishes (9.0 cm diameter) containing filter pape
Braz. J. Pharm. Sci.. Publicado em: 29/11/2018
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8. Production and characterization of a biosurfactant produced by Streptomyces sp. DPUA 1559 isolated from lichens of the Amazon region
Surfactants are amphipathic compounds containing both hydrophilic and hydrophobic groups, capable to lower the surface or interfacial tension. Considering the advantages of the use of biosurfactants produced by microorganisms, the aim of this paper was to develop and characterize a biosurfactant produced by Streptomyces sp. DPUA1559 isolated from lichens of
Braz J Med Biol Res. Publicado em: 11/12/2017
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9. Degradation of textile dyes by cyanobacteria
Abstract Dyes are recalcitrant compounds that resist conventional biological treatments. The degradation of three textile dyes (Indigo, RBBR and Sulphur Black), and the dye-containing liquid effluent and solid waste from the Municipal Treatment Station, Americana, São Paulo, Brazil, by the cyanobacteria Anabaena flos-aquae UTCC64, Phormidium autumnale UTEX1
Braz. J. Microbiol.. Publicado em: 2017-03
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10. Phytotoxicity of Perlatolic Acid and Derivatives
ABSTRACT Perlatolic acid (1), methyl perlatolate (2), and the products of perlatolic acid alcoholysis-namely, methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, tert-butyl, n-pentyl, and n-hexyl 2-hydroxy-4-methoxy-6-n-pentylbenzoate (3-11)-were evaluated for their herbicidal potential on Lactuca sativa L. (lettuce) and Allium cepa L. (onion) seeds. Th
Braz. arch. biol. technol.. Publicado em: 01/08/2016
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11. Synthesis, characterization, and biological activity of a new class of dialkylphosphorylhydrazone derivatives of isatin
Sixteen dialkylphosphorylhydrazones were synthesized by condensation of phosphorylhydrazines with substituted isatins. Products were characterized by FTIR, ¹H-NMR, 13C-NMR, and 31P-NMR. Fungicidal activities of these compounds against Rhizoctonia solani and Fusarium oxysporum were also evaluated. Some compounds inhibited the growth of Rhizoctonia solani and
Quím. Nova. Publicado em: 2014-07
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12. Interspecific variation in the allelopathic potential of the family Myrtaceae
Allelopathy is a type of biotic interference wherein a plant releases bioactive metabolites into an environment, thereby affecting the adjacent biota. Stressful environments stimulate the production of these metabolites. The present study tests the novel weapons hypothesis, which postulates that species belonging to the same genus and from the same environme
Acta Bot. Bras.. Publicado em: 2013-03