Tesis sobre el tema "Brassica"
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Koech, Joel Kipkemoi. "Resistance of Brassica L. species to Plasmodiophora brassicae Wor". Thesis, University of East Anglia, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359313.
Texto completoDavies, Katherine Ann. "Early events in pathogenesis of Pyrenopeziza brassicae on Brassica napus". Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343008.
Texto completoWang, Tongtong. "Resistance to Turnip mosaic virus (TuMV) in Brassica juncea and introgression of resistance from Brassica rapa, Brassica napus and Brassica nigra into Brassica juncea". Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/89272/.
Texto completoWallenhammar, Ann-Charlotte. "Monitoring and control of Plasmodiophora brassicae in spring oilseed brassica crops /". Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5726-2.pdf.
Texto completoFernandes, Maria de Fátima Gomes. "Duo Ecológico Pieris brassicae/Brassica oleracea: Perfil Metabolómico e actividade biológica". Doctoral thesis, Faculdade de Farmácia da Universidade do Porto, 2010. http://hdl.handle.net/10216/63800.
Texto completoFernandes, Maria de Fátima Gomes. "Duo Ecológico Pieris brassicae/Brassica oleracea: Perfil Metabolómico e actividade biológica". Tese, Faculdade de Farmácia da Universidade do Porto, 2010. http://hdl.handle.net/10216/63800.
Texto completoBoys, Emily Frances. "Resistance to Pyrenopeziza brassicae (light leaf spot) in Brassica napus (oilseed rape)". Thesis, University of Nottingham, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.556103.
Texto completoAslam, Ferre N. "Haploid production in rapid-cycling Brassica campestris and Brassica napus". Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292906.
Texto completoLopes, Alexandra de Pinho Noites. "Caracterização química e biológicada pieris brassicae alimentada com Brassica Ra pa Var. Rapa". Master's thesis, Faculdade de Farmácia da Universidade do Porto, 2008. http://hdl.handle.net/10216/20825.
Texto completoLopes, Alexandra de Pinho Noites. "Caracterização química e biológicada pieris brassicae alimentada com Brassica Ra pa Var. Rapa". Dissertação, Faculdade de Farmácia da Universidade do Porto, 2008. http://hdl.handle.net/10216/20825.
Texto completoDeepa, Alex. "Molecular characterization of Brassica juncea 3-Hydroxy-3-methylglutaryl-coenzyme A synthase". Thesis, Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21687547.
Texto completoGlémin, Sylvain. "Dépression de consanguinité, systèmes de reproduction et biologie de la conservation. Approches théoriques et expérimentales chez Brassica insularis Moris". Montpellier 2, 2002. http://www.theses.fr/2002MON20171.
Texto completoThis, Patrice. "Caractérisation et développement de marqueurs moléculaires en vue de l'analyse de lignées d'addition : Brassica napus-Brassica nigra et Diplotaxis erucoides-Brassica Nigra". Perpignan, 1992. http://www.theses.fr/1992PERP0166.
Texto completoGoodey, Nicole Ann. "Ecological patterns in plant defence chemistry and herbivore responses in natural populations of Brassica oleracea". Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/21667.
Texto completoMajer, Dorothea. "Genetic variation in Pyrenopeziza brassicae and its interaction with its host Brassica napus ssp. oleifera". Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338299.
Texto completoSANTOS, Carlos Ant?nio dos. "Calagem e biofungicida no manejo da h?rnia das cruc?feras em couve-flor no munic?pio de Nova Friburgo-RJ". Universidade Federal Rural do Rio de Janeiro, 2017. https://tede.ufrrj.br/jspui/handle/jspui/2418.
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CAPES
CNPq
FAPERJ
The search for efficient strategies to reduce the losses caused by clubroot (Plasmodiophora brassicae) in cauliflower is essential due to the economic and social importance of this culture. Thus, the present study was developed with the objective of evaluating the effect of different treatments in the control of the disease, root development, biomass and inflorescences production under field and greenhouse conditions. The study consisted of three trials carried out in a family farmer's area in the municipality of Nova Friburgo, RJ, Brazil. In the first trial, it was tested the residual effect of four doses of calcined limestone (0, 1.0, 2.0 and 4.0 Mg.ha-1) associated to the application of Trichoderma harzianum biofungicide under field conditions. In the second trial, it was tested the effect of the liming associated to the application of T. harzianum and cyazofamid, under greenhouse conditions. In the third one, two ways of applying limestone were tested, in the planting pit, and applied by hand. The use of gypsum was evaluated in the field. The increase of the limestone doses promoted higher pH levels, and Ca+2 contents, and reduction of the toxic Al + 3 contents in the soil. There was also a reduction of root volume with galls, greater root development, and productivity in cauliflower. The use of T. harzianum was not effective to control the disease and did not favor the root development, either in field or in greenhouse conditions. The fungicide cyazofamid reduced the volume roots with galls, the severity, and the progression of the disease. The third rial revealed a discrete reduction in the severity of the disease when using limestone and gypsum combined. Although there was no effect of the treatments on the root system, limestone applied to the pit and by hand resulted in greater accumulations of fresh mass of inflorescence and productivity. The application of limestone by hand, in the pit, and combined with gypsum favored the accumulation of calcium in the plants. The application of limestone in the pit was equivalent to the hand application in terms of soil chemical attributes improvement, reduction of disease severity, and increase of productivity and accumulation of nutrients.
A busca por estrat?gias eficientes na redu??o das perdas causadas pela h?rnia das cruc?feras (Plasmodiophora brassicae) em couve-flor ? essencial devido ? import?ncia econ?mica e social dessa cultura. Com isso, desenvolveu-se o presente estudo com o objetivo de avaliar, em condi??es de campo e casa de vegeta??o, o efeito de diferentes tratamentos no controle da doen?a, desenvolvimento das ra?zes e produ??o de biomassa e infloresc?ncias em couve-flor. O trabalho foi constitu?do de tr?s ensaios realizados em ?rea de produtor familiar no munic?pio de Nova Friburgo, RJ. No primeiro ensaio, avaliou-se o efeito residual de quatro doses de calc?rio calcinado (0; 1,0; 2,0 e 4,0 Mg.ha-1), associado ? aplica??o de biofungicida a base de Trichoderma harzianum, em condi??es de campo. No segundo, avaliou-se o efeito da calagem associada ? aplica??o de T. harzianum e ciazofamida, em casa de vegeta??o. No terceiro, avaliou-se em campo duas formas de aplica??o de calc?rio, na cova e ? lan?o, e o uso de gesso agr?cola. O aumento das doses de calc?rio promoveu eleva??o do pH e dos teores de Ca+2 e redu??o do teor de Al+3 t?xico no solo. Ainda, houve redu??o do volume de ra?zes com h?rnias e maior desenvolvimento radicular e produtividade em couve-flor. O uso de T. harzianum n?o foi eficaz no controle da doen?a e n?o favoreceu o desenvolvimento radicular das plantas, seja nas condi??es de campo ou de casa de vegeta??o. O fungicida ciazofamida reduziu o volume de ra?zes doentes, a severidade e a progress?o da doen?a. Constatou-se no terceiro ensaio discreta redu??o da severidade da doen?a com o uso de calc?rio combinado com gesso. N?o houve efeito dos tratamentos sobre o sistema radicular, entretanto, calc?rio aplicado na cova e ? lan?o resultaram em maiores ac?mulos de massa fresca de infloresc?ncia e produtividade. A aplica??o de calc?rio ? lan?o, na cova, e calc?rio combinado com gesso favoreceram o ac?mulo de c?lcio nas plantas. O uso de calc?rio na cova foi equivalente ? sua aplica??o ? lan?o quanto a melhorias dos atributos qu?micos do solo, redu??o da severidade da doen?a, aumento da produtividade e ac?mulo de nutrientes.
Brown, Angela Philip. "Pollen, embryo and endosperm development following cross-pollination within and between the crop species Brassica campestris, Brassica oleracea, Brassica napus and Raphanus sativus". Thesis, University of Edinburgh, 1985. http://hdl.handle.net/1842/12858.
Texto completoBassegio, Doglas [UNESP]. "Potencial produtivo de acessos de espécies brássicas sob condições tropicais". Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/150299.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
O gênero Brassica é a terceira maior fonte de óleo vegetal do mundo, com oleaginosas cultivadas no Hemisfério Norte. No Brasil, apesar do aumento nos últimos anos, a espécie Brassica napus L., não é um cultivo tradicional, devido as limitações de fotoperíodo e altas temperaturas. Outras espécies do gênero, como é o caso da Brassica juncea L. e Brassica rapa L., amplamente cultivadas em zonas de baixa precipitação e fertilidade, podem ser opções de cultivo em áreas marginais de sequeiro em condições tropicais, visto que possuem alto teor de óleo com características propicias para o biodiesel, além de menor sensibilidade ao ambiente. Os objetivos deste trabalho foram caracterizar germoplasma de Brassica juncea L. e Brassica rapa L., avaliar o potencial produtivo e a divergência genética de acessos em Botucatu – SP, Brasil. Os experimentos tiveram início em outono-inverno de 2012, com a avaliação de 424 acessos de Brassica juncea L. e 209 de Brassica rapa L. quanto ao florescimento e produção de sementes. Em outono-inverno de 2015 e 2016 acessos de brássicas e um híbrido comercial da espécie Brassica napus L. foram avaliados, em experimentos em blocos ao acaso com três repetições, em relação aos componentes da produção, à produção grãos e óleo e a divergência genética. Do total de acessos introduzidos e avaliados, apenas 51 (12%) de Brassica juncea L. e 59 (28%) de Brassica rapa L. produziram sementes, devido ao efeito de fotoperiodo. Os componentes da produção variaram entre acessos e espécies, com destaque para precocidade e teor de óleo de acessos da espécie Brassica rapa L.; e o número de síliquas e a produtividade de grãos e óleo de acessos da espécie Brassica juncea L.. A produtividade de grãos e óleo foi em média 15% superior nos acessos de Brassica juncea L. em relação a espécie Brassica rapa L., com destaque para o acesso PI 180266 com 2056 kg ha–1 de grãos e 805 kg ha–1 de óleo. A variabilidade genética entre os acessos de brássicas possibilitou a formação de grupos de acessos para futuros ganhos em melhoramento genético. Conclui-se que os acessos selecionados confirmam a hipótese do potencial produtivo sem efeito de fotoperíodo em condições tropicais, o que demonstra que podem ser opções para cultivo em áreas onde a Brassica napus L. não está bem adaptada.
Brassica is the third largest source of vegetable oil in the world, with oilseeds grown in the Northern Hemisphere. In Brazil, despite the increase in recent years, Brassica napus L., is not a traditional crop due to limitations of photoperiod and high temperatures. Other species of the genus, such as Brassica juncea L. and Brassica rapa L., widely cultivated in low rainfall zones and fertility, may be cultivation options in marginal rainfed areas under tropical conditions, since they have high oil content with characteristics conducive to biodiesel, in addition to lower sensitivity to environment. The objectives of this work were to characterize the germplasm of Brassica juncea L. and Brassica rapa L. and to evaluate the productive potential, as well as the genetic divergence of accesses in Botucatu – SP, Brazil. The experiments started in autumn-winter of 2012, with the evaluation of 424 accessions of Brassica juncea L. and 209 of Brassica rapa L. regarding flowering and seed production. In the autumn-winter of 2015 and 2016, Brassica napus L. and commercial Brassica napus L. were evaluated in randomized blocks with three replicates, in relation to the production components, grain and oil production, and divergence genetic. Of the total number of accesses introduced and evaluated, only 51 (12%) of Brassica juncea L. and 59 (28%) of Brassica rapa L. produced seeds, due to the effect of photoperiod. The components of the production varied between accesses and species, with emphasis on precocity and oil content of Brassica rapa L.; and the growth and number of siliques of the specie Brassica juncea L. The yield of grains and oil was on average 15% higher in the accessions of Brassica juncea L. in relation to the species Brassica rapa L., with emphasis on access PI 180266 with 2056 kg ha–1 of grains and 805 kg ha–1 of oil yield. The genetic variability among the accessions of brassicas allowed the formation of groups of accessions for future gains in genetic improvement. It is concluded that the selected accessions confirm the hypothesis of the productive potential without photoperiod effect in tropical conditions, which demonstrates that they can be options for cultivation in areas where Brassica napus L. is not well adapted.
Ryder, Carol D. "Comparative genomics of Brassica oleracea". Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/51651/.
Texto completoDanielsson, Jesper. "Bacillus based biocontrol on Brassica /". Uppsala : Deptartment of Plant Biology and Forest Genetics, Swedish University of Agricultural Sciences, 2008. http://epsilon.slu.se/200840.pdf.
Texto completoKubik, Thomas James. "Evaluation of doubled haploid lines derived from interspecific crosses between Brassica napus and Brassica rapa". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ40073.pdf.
Texto completoMiller, Claire Anne. "The effect of Brassica pathogens on aspects of metabolism in oilseed rape (Brassica napus L.)". Thesis, University of Sheffield, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296856.
Texto completoBoideau, Franz. "Les modifications des règles de la recombinaison homologue chez les Brassica". Electronic Thesis or Diss., Rennes, Agrocampus Ouest, 2022. http://www.theses.fr/2022NSARC161.
Texto completoMeiotic recombination is a key evolutionary process, allowing both the correct segregation of chromosomes and the reshuffling of alleles at each generation during meiosis. Therefore, this process is highly regulated. Interestingly, Brassica AAC allotriploid hybrids (2n=3x=29), deriving from the natural cross between the allotetraploid Brassica napus (AACC, 2n=4x=38) and the diploid Brassica rapa (AA, 2n=2x=20), presents a modified recombination landscape, with more crossovers (COs) all along the genome compared to B. rapa. Additionally, they also present a modified distribution, with the presence of COS in the normally cold pericentromere regions. However, the underlying causes of this modified recombination landscape remain to be deciphered. Using a combination of genetic mapping and cytogenetic approaches, we demonstrated that the modified recombination landscape is directly linked to the AAC genomic structure compared to a AA diploid or a AACC allotetraploid.This phenotype may either be conserved in the second generation by maintaining the AAC, whereas it is reversed when reverting to a AACC genomic structure. However, some genomic regions remain deprived of recombination. We demonstrated that DNA methylation and structural variations such as chromosomal inversions are limiting factors of recombination in Brassica napus. Chromosomal inversion prevent the formation of COs within these regions, even in the highly recombining AAC hybrids. Overall, the AAC allotriploid hybrids may enable to unravel novel mechanisms regulating COs landscape. They also are particularly intersting for breeders, as they will allow to speeding up breeding programs by facilitating the introduction of traits of interest or the access of some underexploited genomic regions such as pericentromeres
Mimouni, Brahim. "Étude comparative des constituants polypeptidiques de la fraction globuline des graines de colza (Brassica napus L. ) et espèces parentales (Brassica oleracea L. Et Brassica campestris L. )". Bordeaux 1, 1989. http://www.theses.fr/1989BOR10514.
Texto completoLoudon, Peter T. "Somatic hydridisation within the genus Brassica". Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306453.
Texto completoSarker, R. H. "Cytophysiology of self-incompatability in Brassica". Thesis, University of Reading, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383394.
Texto completoGherli, Hussein. "Nitrogen use efficiency in Brassica napus". Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/97639/.
Texto completoWagner, Geoffrey. "Analyse génétique de la réponse métabolique du colza (Brassicas napus) à l’infection par Plasmodiophora brassicae, agent causal de la hernie". Rennes, Agrocampus Ouest, 2012. http://www.theses.fr/2012NSARC107.
Texto completoClubroot is a disease affecting rapeseed, Brassica napus, caused by the protist Plasmodiophora brassicae. Disease control is achieved by the use of varieties with resistances under monogenic control that can be rapidly overcome by pathogen populations. Potential durability of clubroot resistance could be improved by the use of partial quantitative resistance. However, little is known about the mechanisms underlying this resistance particularly at the metabolic level. In this context, the objective of this work was to decipher (i) the metabolic changes induced after P. Brassicae infection and (ii) the functional architecture of quantitative partial resistance to clubroot. We showed an accumulation of free amino acids in infected roots which correlated to the level of symptoms, possibly contributing to pathogen nutrition. Moreover, indole glucosinolate contents decreased in the first steps of the secondary phase of the infection in Darmor-bzh (a genotype showing a high level of quantitative partial resistance). This decrease could, through the auxin pathway, contribute to limit the development of symptoms. Metabolic genetics analysis highlighted four main metabolic QTL hotspots, three of which colocalised with QTL for clubroot resistance, thus supporting the relationship between partial quantitative resistance and primary and secondary metabolites. Since different metabolic profiles underlie each hotspot, resistant genotypes with different mechanisms can be designed for a better durability
Castro, Douglas Barbosa. "Uso do óleo essencial de mostarda no controle de Meloidogyne enterolobii (= M. mayaguensis) em pomar de goiabeira". Universidade Federal de Viçosa, 2010. http://locus.ufv.br/handle/123456789/4388.
Texto completoConselho Nacional de Desenvolvimento Científico e Tecnológico
Considering the importance of Meloidogyne enterolobii (= M. mayaguensis) to the culture of guava and the potential of Essential Oil of Mustard (EOM) on nematode control, was aimed to evaluate the efficiency of EOM on control of these nematodes in the field, on a orchard of plants uprooted and cut off at 0.3 m from soil level or in intact plants in production. An orchard of guava trees naturally infested with M. enterolobii, in Viçosa, MG, was selected. EOM was applied on soil at 100 μg/mL, by strips of cardboard in the rhizosphere of intact plants, or by irrigating the cultivation area with EOM diluted in water after the plants have been cut off or uprooted. Samples were collected over 140 days after the product application and evaluated on the number of J2 in soil and number of galls and eggs in roots of tomato plants in the bioassay. The J2 population in soil underwent rapid reduction, regardless of treatment, and was configured as an unreliable variable. By the bioassay, was obtained a reduction of 71%, 81% and 99% for number of galls and 60%, 80% and 83% for number of eggs at 45, 75 and 140 days after application, respectively, for plots treated with EOM, in uprooted or cutted plants. The terbuphos only reduced the number of galls during 45 days. The biological evaluation at 140 days revealed a general trend of population reduction, considering the number of galls and eggs. In intact plants, there was no control of nematodes, as the average variations of J2, galls and eggs did not differ significantly between treatments. In conclusion, the EOM was effective in controlling M. enterolobii at the field in the absence of the host.
Considerando a importância de Meloidogyne enterolobii (= M. mayaguensis) para a cultura da goiabeira e o potencial do óleo essencial de mostarda (OEM) no controle de nematoides, objetivou-se avaliar a eficiência do OEM no controle do nematoide no campo, em pomares de plantas arrancadas, recepadas ou em produção. Selecionou-se um pomar de goiabeiras naturalmente infestado por M. enterolobii, em Viçosa, MG. O OEM foi aplicado no solo a 100 μg/mL, por meio de tiras de papelão na rizosfera de plantas intactas ou irrigando a área de cultivo com OEM diluído em água, após as plantas serem recepadas ou arrancadas. Em amostras coletadas ao longo de 140 dias após aplicação do produto, avaliou-se o número de J2 no solo e número de galhas e ovos em raízes de tomateiros, no teste biológico. Como a população de J2 no solo sofreu rápida redução, independente do tratamento, ela foi considerada uma variável pouco confiável para a avaliação. Pelo teste biológico, obteve-se uma redução de 71%, 81% e 99% para número de galhas e 60%, 80% e 83% para número de ovos aos 45, 75 e 140 dias após a aplicação, respectivamente, para as parcelas tratadas com OEM, em plantas arrancadas ou recepadas. O terbufós reduziu apenas o número de galhas aos 45 dias, o qual voltou a aumentar posteriormente. Aos 140 dias, houve tendência generalizada de redução da população, considerando-se o número de galhas e ovos. Nas plantas intactas não houve controle do nematoide, pois as médias das variações de J2, galhas e ovos não diferiram significativamente entre os tratamentos. Em conclusão, o OEM foi eficiente em controlar M. enterolobii no campo na ausência do hospedeiro.
Albertin, Warren. "Régulation de l'expression des gènes dupliqués chez les polyploïdes : approche protéomique appliquée à l'analyse de Brassicacées autopolyploïdes et allopolyploïdes". Paris 11, 2005. http://www.theses.fr/2005PA112161.
Texto completoPolyploidisation is a major evolutionary process in eukaryotes most flowering plants are polyploids or paleopolyploids, including major crop species understanding the mechanisms of regulation of duplicated gene expression in polyploids is thus essential for evolutionary genetics and plant breeding. The purposes of these thesis were i- to describe homologous gene expression in an autopolyploid (in which ihe chromosome sets originated from the same species) and in an allopolyploid model (in which the homeologous chromosome sets derived from more than one species through hybridization); ii- to characterize the genes targeted by differential gene regulation during polyploidisaiion and iii- t0 precise the underlying mechanisms. We first studied a brassica oleracea autopolyploidy series involving haploid, diploid and tetraploid cabbages. Gene expression was investigated at the protein level using comparative proteomics. Our results indicated that genome doubling did not alter significantly the proteomes of green tissues in b. Oleracea. To study gene expression during the early steps of allopolyploid formation, the oilseed rape b. Napus allotetraploid model was chosen. Comparative proteomics was applied to neo-synthesized b. Napus and its diploid progenitors b. Rapa and b. Oleracea. Several deviations from the additivity hypothesis (predicting a midparent proteome for the amphiploids) were observed (26-39% of polypeptides) non-stochastic gene expression re-patterning was found since 98% of the detected variations were reproducible in four independently created amphiploids the identification of the proteins displaying non-additive patterns is under process
Canassa, Vinícius Fernandes 1988. "Resistência de genótipos de couve-de-folha Brassica oleracea var. acephala (L.) a Brevicoryne brassicae (L.) (Hemiptera : Aphididae) /". Botucatu, 2019. http://hdl.handle.net/11449/182563.
Texto completoBanca: Ivana Fernandes da Silva
Banca: André Luiz Lourenção
Banca: Pedro Takao Yamamoto
Banca: Bruno Henrique Sardinha de Souza
Resumo: A família Brassicaceae contém aproximadamente 3700 espécies, das quais apenas vinte são consumidas e cultivadas. A couve-de-folha [Brassica oleracea (L.) var. acephala] destaca-se entre as hortaliças como alimento importante para o consumo humano, possuindo níveis significativos de vitaminas A, C, K e ácido fólico, além de ser uma boa fonte de fibra. As brassicas também são conhecidas por terem elevado conteúdo de glucosinolatos, os quais são associados com a colonização de insetos-praga, além de reduzirem os riscos de ocorrecia de vários tipos de câncer em humanos. Um dos desafios para a cultura da couve-de-folha é a alta incidência de pragas em todas as fases da planta, sendo o pulgão Brevicoryne brassicae (L.) (Hemiptera: Aphididade) considerado espécie-chave para várias regiões. Esse pulgão é responsável por danos diretos e indiretos às plantas, prejudicando seu desenvolvimento e reduzindo seu valor comercial. A aplicação de inseticidas sintéticos é a principal tática de controle adotada pelos produtores para o manejo do afídeo, provocando impactos ambientais e colocando em risco a saúde do ser humano. O uso de resistência varietal no controle de pragas pode ser uma ferramenta valiosa para o Manejo Integrado de Pragas (MIP) e pode ser usado junto com outros métodos de controle. Neste estudo foi caracterizada a expressão de antibiose e/ou antixenose em 37 genótipos de couve-de-folha sobre B. brassicae por meio de bioensaios em casa de vegetação. Também foi avaliado o compo... (Resumo completo, clicar acesso eletrônico abaixo)
Doutor
Miller, Trevor Allan. "Agronomic and quality performance of three doubled haploid lines derived from a Brassica napus/Brassica rapa interspecific cross". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ60470.pdf.
Texto completoEriksson, Susanna. "Structural and functional studies of myrosinases and associated proteins in Brassica napus and Sinapis alba /". Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-5743-2.pdf.
Texto completoAuger, Bathide. "Analyses biochimique et moléculaire du métabolisme des flavonoïdes dans la graine de colza (Brassica napus L. ) : vers l’élucidation des déterminants impliqués dans la pigmentation des téguments". Rennes, Agrocampus Ouest, 2010. http://www.theses.fr/2010NSARC096.
Texto completoProcyanidins (PCs) are seed coat specific flavonoids that confer brown pigmentation to the B. Napus seed but impair the qualities from both seed and derived meal. Thus, the yellow-seeded trait (low-PC content) in Brassica is associated with increased seed oil content and with improved meal quality (protein content and meal digestibility). However, development of yellow-seeded lines requires better knowledge of the seed flavonoid pathway in B. Napus. Therefore, the present work aimed to identify and characterize the biochemical and molecular key determinants involved in the PC biosynthetic pathway in B. Napus seeds. In a first step, the profiling of seed coat flavonoids was monitored during seed development in eight black-seeded B. Napus genotypes. Sixteen different flavonoids including (–)-epicatechin, PCs and flavonols were identified and quantified by LC-ESI-MS. High amounts of PCs accumulated into the inner integument, especially within the endothelium and in the micropylechalaza region. In parallel, a “candidate gene” approach was undertaken to clone the Brassica orthologs from seven TRANSPARENT TESTA (TT) genes involved in seed flavonoid metabolism in A. Thaliana. Our results reported that oilseed rape TT genes (Bna. TT) belonged to small multigene families of 2 to 6 copies. The different paralogs were expressed in developing seeds following a spatio-temporal profile that was consistent with the PC accumulation pattern. In addition, phenotypic complementation was observed when Bna. TT genes were introduced into the corresponding Arabidopsis tt mutants. Finally, Bna. TT genes mapped to oilseed rape genomic regions that displayed collinearity with Arabidopsis counterparts and some of them displayed putative co-localisations with QTLs for seed pigmentation. In a last part, results from both metabolic and molecular analyses allowed identification of specific low-PC oilseed rape genotypes among lines with altered seed pigmentation. Future prospects will include the identification of mutations within Bna. TT genes through reverse genetic approach (TILLING) in order to establish a wider genetic diversity panel for low-PC trait. It will be also necessary to evaluate the impact of low-PC mutations on seed quality as well as on plant physiology
Nicolas, Stéphane. "Contrôle génétique de la recombinaison homéologue chez les hapoloïdes de Colza (Brassica Napus L. )". Rennes, Agrocampus, 2007. http://www.theses.fr/2006NSARH069.
Texto completoNatural biodiversity and beneficial chromosome rearrangements are an under exploited sustainable resource that can be used to enrich the genetic basis of cultivated plants. A lot is still to be done to make a more efficient use of these vast reservoirs of variation. This process is related to meiosis and recombination between related but divergent genomes. In this study, I have genotyped progenies of haploid x euploid B. Napus with molecular markers and analysed the rate and nature of chromosomal rearrangements originating at meiosis in two haploid genotype (n=19) that display very different meiotic behaviour at metaphase I. I show that a high number of chromosomal rearrangements occur during meiosis of B. Napus haploid and are transmitted by FDR-like unreduced gametes to their progeny ; most of these rearrangements are produced by crossing-overs that occur preferentially between regions of primary homeology (Muller), but may also take place between other duplicated regions showing intragenomic or intergenomic homology. I show that the two haloid genotypes display sharp differences of meiotic “homeologous” recombination and that the two genomes of B. Napus are differentially affected by rearrangements, which suggests that some rearrangements are counter-selected. Finally I show that the rate of chromosomal reshuffling varies within and among chromosomes
Aḥmad, Shafīq. "In vitro callus selection in Brassica species". Thesis, University of Edinburgh, 1996. http://hdl.handle.net/1842/26390.
Texto completoLeeks, C. R. F. "Determining seed vigour in selected Brassica species". Lincoln University, 2006. http://hdl.handle.net/10182/1274.
Texto completoGo, Nancy Erro. "Control of floral induction in Brassica napus". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ60431.pdf.
Texto completoNapis, Suhaimi. "Molecular genetic studies on Brassica napus L". Thesis, Durham University, 1991. http://etheses.dur.ac.uk/6037/.
Texto completoDharmaratne, Sumedha. "Studies on self-incompatibility in Brassica napus". Thesis, University of St Andrews, 1990. http://hdl.handle.net/10023/14131.
Texto completoGuerche, Philippe. "Transformation génétique du colza (Brassica napus L. )". Paris 11, 1988. http://www.theses.fr/1988PA112134.
Texto completoTransgenic rapeseed plants have been obtained using two transformation procedure. The regeneration and caracterization of rapeseed plants derived from hairy roots induced by Agrobacterium rhizogenes are describe in the first part. The second part is devoted to the study of direct gene transfer by electroporation. This technique was optimized on tobacco protoplasts using a transient expression assay. The application of this technique to rapessed protoplasts made it possible to obtain transgenic rapeseed plants resistant to the antibiotic kanamycin. Possible agronomy applications of this strategy of transformation to rapeseed improvement are considered
Guerche, Philippe. "Transformation génétique du colza, Brassica napus L". Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376140414.
Texto completoRueda, Edwin Ernesto Pulido. "Utilização de altas diluições na produção orgânica de repolho, brócolis e couve-flor". Universidade do Estado de Santa Catarina, 2013. http://tede.udesc.br/handle/handle/1161.
Texto completoCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
The family of Brassicaceae plays an important role in Brazilian horticulture, having the species of cabbage, broccoli, and cauliflower the higher at consumption by the population. The aim of this study was to evaluate the use of high dilutions preparation for production under organic system of cabbage, broccoli, and cauliflower. Experiments were conducted in the greenhouse and under fields conditions. For greenhouse, the experimental design was completely randomized. For field experiments the experiment design were randomized complete block design. Both designs were with four replications and nine treatments. For greenhouse, trays had of 64 plants from with 20 plant were taken as experiment plot. Each plot consisted of 20 plants for each specie and repetition. Ten plants distributed in double line was the plot in the field experiment. The treatments consisted of homeopathic preparations of Arnica montana, Silicea terra, Carbo vegetabilis, and Sulphur at 6CH and 30CH. For control water was used. The experiments were conducted separately for each species. In greenhouse, the treatments were applied every four days until transplanting (seven applications). Under field conditions, the treatments were applied every fifteen days until harvest (four applications). Shoot fresh mass, root fresh mass, shoot dry mass, root dry mass, plant height, root length, and stem diameter for seedlings were evaluated. For field, shape index, rate of the length of the heart and longitudinal diameter (C / D) for cabbage field crop were evaluated. Plant height and stem diameter for broccoli were evaluated. Fresh mass and dry mass of cabbage heads and broccoli inflorescences were also evaluated. The disease incidence of black-rot and alternaria and the occurrence of cabbage aphid and damage caused by diamondback moth were evaluated. The preparations of Sulphur at 6CH increased the shoot dry mass, root dry mass for seedlings and production of cabbage heads. The preparations of Sulphur at 6CH increased the plant height, root length, and stem diameter for broccoli. Silicea terra at 30CH increased the fresh mass and dry mass of broccoli inflorescences. Sulphur at 6CH reduced the aphid occurrence for cabbage and diamondback moth damage percentage for broccoli. Sulphur at 30CH increased the shoot dry mass, root dry mass, and height for cabbage seedlings. Sulphur at 30CH increased the shoot dry mass, root dry mass, and stem diameter. Aphid occurrence, alternaria; and black rot incidence were decreased when broccoli was treated by Sulphur at 30CH. Silicea terra at 30CH increased the shoot dry mass, root dry mass, height plant, stem diameter, and root length for broccoli seedlings. Silicea terra at 30CH also increased the shoot dry mass, root dry mass, and stem diameter of cauliflower seedlings. The preparations of Silicea terra at 30CH increased the production of cabbage heads and reduced the black rot incidence for broccoli. The high dilution preparations have influence on the yield and management of pests and diseases of cabbage, broccoli, and cauliflower growth under organic production system
A família Brassicaceae ocupa papel destacado na olericultura brasileira, sendo as espécies de repolho, brócolis e couve-flor de maior consumo pela população. O objetivo deste trabalho foi avaliar o uso de preparados em altas diluições na produção em sistemas orgânicos de repolho, brócolis e couve-flor. Os experimentos com repolho, brócolis e couve-flor foram realizados em casa de vegetação e a campo na Epagri e na comunidade de Pedras Brancas, Lages, SC. O delineamento foi inteiramente casualizado em casa de vegetação e de blocos ao acaso, a campo. Ambos os delineamentos foram com quatro repetições e nove tratamentos. Em casa de vegetação, as bandejas foram constituídas por 64 plantas por parcela para cada hortaliça. A parcela útil foi composta por 20 plantas centrais das 64 plantas da parcela. A campo, cada parcela de repolho e brócolis foi constituída por 10 plantas distribuídas em dupla linha. Os tratamentos utilizados, tanto para casa de vegetação como para campo, foram os preparados homeopáticos de Arnica montana, Silicea terra, Carbo vegetabilis e Sulphur na 6CH e 30CH; e água como testemunha. Os experimentos foram delineados em separado para cada uma das hortaliças e conduzidos em duplo cego. Em casa de vegetação, os tratamentos foram aplicados a cada quatro dias, sobre as mudas até seu transplante, totalizando sete aplicações. No campo, após o transplante das mudas, os tratamentos foram aplicados a cada quinze dias, sobre as plantas até sua colheita, totalizando quatro aplicações. Foram avaliadas, em mudas, características de massa fresca e seca da parte aérea e radicular, altura da planta, comprimento de raiz e diâmetro do caule. A campo, no momento da colheita, foram avaliadas as características de índice de formato, a relação do comprimento do coração e do diâmetro longitudinal (C/D) para repolho; para o brócolis, altura da planta e diâmetro do caule. Massa fresca e seca das cabeças em repolho e das inflorescências de brócolis também foram avaliadas. A incidência de alternariose e podridão-negra, bem como, a ocorrência do pulgão e dos danos da traça-das-crucíferas foram avaliadas em repolho e brócolis. O preparado de Sulphur na 6CH aumentou a massa seca da parte aérea e radicular em mudas e a produção de cabeças de repolho, bem como o incremento da massa fresca e seca das inflorescências em brócolis. O preparado de Sulphur na 6CH reduziu também a ocorrência do pulgão em plantas de repolho e brócolis e o percentual de danos da traça-das-crucíferas em brócolis.O preparado de Sulphur na 30CH aumentou a massa seca da parte aérea e radicular e altura da plântula em mudas de repolho, bem como o incremento da massa seca da parte aérea e radicular e diâmetro do caule em mudas de couve-flor. A ocorrência do pulgão, a incidência da alternariose e a podridão-negra foram reduzidas quando tratadas como o preparado de Sulphur na 30CH em plantas de brócolis. O preparado de Silicea terra na 30CH incrementou a massa seca da parte aérea e radicular, altura da plântula, comprimento de raiz e diâmetro do caule, em mudas de brócolis, bem como a massa seca da parte aérea e radicular e diâmetro do caule em mudas de couve-flor. O preparado de Silicea terra na 30CH aumentou a produção de cabeças de repolho e reduziu a incidência da podridão-negra em plantas de brócolis. Conclui- se que preparados em altas diluições influenciam na produção e no manejo de insetos-praga e doenças de plantas de repolho, brócolis e couve-flor, sob sistema orgânico
Figueroa, Lauriano. "Epidemiology and early detection of light leaf spot (Pyrenopeziza brassicae) on winter oilseed rape (Brassica napus) in the UK". Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332796.
Texto completoAvila, Sheila Rodrigues de. "A influência da adubação orgânica na preferência alimentar de Brevicoryne brassicae (Homoptera: Aphididae) em Brassica oleracea var. acephala (Brassicaceae)". Universidade Federal de Pelotas, 2017. http://repositorio.ufpel.edu.br:8080/handle/prefix/3768.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
Pesquisar adubações orgânicas que almejam o equilíbrio trofobiótico na cultura de interesse é de extrema importância na busca de sistemas de produção de alimentos mais sustentáveis. Com esta premissa objetivou-se no trabalho analisar a influência de diferentes adubações orgânicas sobre a preferência alimentar de Brevicoryne brassicae em Brassica oleracea var. acephala, estabelecendo inter-relações entre o metabolismo vegetal da couve, as fontes de adubação testadas e a resistência e/ou suscetibilidade aos afídeos. Para tanto, foi feito o cultivo da hospedeira em casa de vegetação, onde a mesma foi cultivada em vasos com adubação orgânica acrescentada ou não de fitoprotetores, obedecendo aos seguintes tratamentos: T1) substrato orgânico comercial a 70% + 30% de húmus (SO+H) como controle; T2) (SO+H) + biofertilizante Vairo via solo; T3) (SO+H) + biofertilizante Supermagro via solo T4) (SO+H) + urina de vaca via solo; T5) (SO+H) + Húmus líquido pulverizado; T6) (SO+H) + soro de leite pulverizado e, T7) (SO+H) + biodinâmico pulverizado. O delineamento experimental foi inteiramente casualizado com 10 repetições, sendo cada repetição (parcela) uma planta. Para os bioensaios de preferência alimentar de múltipla escolha em laboratório foi feita a criação do afídeo, sendo as avaliações realizadas as 24 e 48 horas através da contagem de indivíduos em todas as folhas (halos) representando todos os tratamentos. Também foi feito análise química dos substratos e das couves, além dos fitoconstituintes das mesmas após receber os diferentes tratamentos. Os dados foram submetidos ao teste de hipótese de KruskalWallis (p<0,05), com comparação de grupos pelo método de Simes-Hochberg, sendo após, submetidos à análise de componentes principais. A aplicação dos tratamentos influenciou na preferência alimentar de B. brassicae em B. oleracea var. acephala. Estes forneceram diferentes fontes de nutrientes ao substrato e à planta hospedeira, afetando assim, seu metabolismo vegetal e conseqüentemente a resistência e/ou suscetibilidade aos afídeos. As plantas tratadas com húmus líquido e Vairo apresentaram menor preferência pelos pulgões. Estes induziram a resistência, envolvendo o acúmulo de ácido ascórbico que se correlacionou ao manganês. Os tratamentos urina de vaca, Supermagro e em menor grau o soro de leite foram os que apresentaram folhas com maior preferência pelos afídeos, sendo estes ricos em nitratos e açúcares solúveis, estando estes compostos relacionados respectivamente aos nutrientes nitrogênio, ferro e cálcio. Já os tratamentos controle e biodinâmico apresentaram resultados intermediários de preferência e de correlação aos nutrientes e fitoquímicos.
To search for organic fertilizers that target the trophobiotic balance in the culture of interest and of extreme importance in the search for more sustainable food production systems. The objective of this work was to analyze the influence of different organic fertilizers on the Brevicoryne brassicae food preference in Brassica oleracea var. acephala, establishing interrelations between the vegetable metabolism of the cabbage, the sources of fertilization tested and the resistance and / or susceptibility to the aphids. For this, the host was cultivated in a greenhouse, where it was cultivated in pots with organic fertilization added or not of phytoprotectants, following the following treatments: T1) commercial organic substrate at 70% + 30% humus (SO + H) as control; T2) (SO + H) + biofertilizer Vairo via soil; T3) (SO + H) + biofertilizer Supermagro via soil T4) (SO + H) + cow urine via soil; T5) (SO + H) + pulverized liquid humus; T6) (SO + H) + powdered whey and, T7) (SO + H) + pulverized biodynamic. The experimental design was completely randomized with 10 replicates, each replicate (plot) being one plant. For the bioassays of multiple choice food preference in the laboratory was created the aphid, and the evaluations were performed at 24 and 48 hours by counting individuals on all leaves (halos) representing all treatments. Chemical analysis of the substrates and cabbage was carried out, besides the phyto-constituents of the same ones after receiving the different treatments. The data were submitted to the Kruskal-Wallis hypothesis test (p <0.05), with a comparison of groups by the Simes-Hochberg method, after which they were submitted to principal components analysis. The application of the treatments influenced the food preference of B. brassicae in B. oleracea var. acephala. These provided different nutrient sources to the substrate and host plant, thus affecting its plant metabolism and consequently the resistance and/or susceptibility to aphids. Plants treated with liquid humus and Vairo showed less preference for aphids. These induced resistance, involving the accumulation of ascorbic acid that correlated with manganese. The treatments of cow urine, Supermagro and, to a lesser extent, whey were the ones that presented leaves with a higher preference for aphids, being these rich in nitrates and soluble sugars, these compounds being related respectively to nutrients nitrogen, iron and calcium. The control and biodynamic treatments presented intermediate results of preference and of correlation to nutrients and phytochemicals.
Nunes, Thaise Cristine Fernandes. "Avaliação dos efeitos da radiação gama em vegetais da espécie Brassica olareaceae minimamente processados". Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-07122009-144717/.
Texto completoThe consumption of collard greens (Brassica oleracea cv. acephala) and broccoli (Brassica oleracea L. var. italica) has been inversely associated with morbidity and mortality caused by degenerative diseases. These species are highly consumed in Brazil, which enables its use as minimally processed (MP). The growing worldwide concern with the storage, nutritional quality and microbiological safety of food has led to many studies aimed at microbiological analysis, vitamin and shelf life. To improve the quality of these products, radiation processing can be effective in maintaining the quality of the product, rather compromising their nutritional values and sensory. The aim of this study was to evaluate the effectiveness of gamma radiation from 60Co at doses of 0, 1.0 and 1.5 kGy on the reduction of microbiota in these plants, and analyze their nutritional and sensory characteristics. The methodology used in this study was microbiological analysis, colorimetric analysis, analysis of phenolic compounds, antioxidant analysis and sensory analysis. The microbiological analysis showed a decrease in the development of populations of aerobic microorganisms, psychrotrophic and yeast and mold with increasing doses of radiation. The sensory analysis showed no significant difference between different times of cooking analyzed. The analysis of phenolic compounds, significant differences between the samples, suggesting that with increasing dose of irradiation was an increase in the amount of phenolic compounds found in broccoli and collard greens MP. It can be observed that the sample of control collard greens showed high antioxidant activity and for the samples treated by irradiation was a decrease of percentage. In contrast the samples of broccoli show an increase in the rate of scavenging DPPH with increase of the dose of radiation. The colorimetric analysis revealed that for samples of MP collard greens and broccoli foil of no significant differences, but for samples of stems of broccoli significant difference on the yellowing during storage. It is concluded that the processing of collard greens and broccoli butter by gamma radiation may be a viable alternative to the industry, since there was a reduction of the population of microorganisms, without changes in the sensory qualities and with minimum changes in the characteristics that confer antioxidant power.
Kwon, Taek-Ryoun. "Physiological studies of salinity tolerance in Brassica species". Thesis, Coventry University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361653.
Texto completoThurston, Milo. "Virus transmission dynamics and pathogenesis in Brassica species". Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249332.
Texto completoNewton, Erika Lucie. "Plant-herbivore interactions in natural Brassica oleracea communities". Thesis, University of Exeter, 2009. http://hdl.handle.net/10036/72253.
Texto completoSharpe, Andrew Glenn. "Marker-assisted breeding in oilseed rape (Brassica napus)". Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361724.
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