Homozygous Lines
Mostrando 1-12 de 288 artigos, teses e dissertações.
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1. Selection of high-yielding, adapted and stable wheat lines in preliminary trials
Abstract Experimental design without replication, such as Federer's augmented block design, allows us to determine productivity, adaptability and stability in multi-environment trials. This work aimed to select productive wheat lines with high adaptability and stability in preliminary trials. The grain yield of 140 homozygous wheat lines was measured in 2015
Crop Breed. Appl. Biotechnol.. Publicado em: 05/12/2019
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2. Behavior of grape breeding lines with distinct resistance alleles to downy mildew (Plasmopara viticola)
Abstract Downy mildew (Plasmopara viticola) is the main grapevine disease in humid regions. In the present investigation, marker-assisted selection (MAS) was used to develop grapevine lines homozygous in loci Rpv1 and Rpv3 for resistance against P. viticola. The experimental populations UFSC-2013-1 (n = 420) and UFSC-2013-2 (n = 237) were obtained by self-po
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-06
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3. The 19-bp deletion polymorphism of dihydrofolate reductase (DHFR) and nonsyndromic cleft lip with or without cleft palate: evidence for a protective role
Objective Nonsyndromic cleft lip with or without cleft palate (NS-CL/P) are among the most common congenital birth defects worldwide. Several lines of evidence point to the involvement of folate, as well as folate metabolizing enzymes in risk reduction of orofacial clefts. Dihydrofolate reductase (DHFR) enzyme participates in the metabolic cycle of folate a
J. Appl. Oral Sci.. Publicado em: 2015-06
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4. Cultura de anteras e partenogênese in situ e in vitro de genótipos de laranja doce (Citrus sinensis Osbeck.) / Anther culture and in vitro and in situ parthenogenesis of sweet orange (Citrus sinensis Osbeck.) genotypes
The production of completely homozygous lines in citrus breeding program is hard, and double-haploid plantlets (completely homozygous lines) can be used to improve these breeding programs. However, many factors are associated with the success of the regeneration of haploid or double-haploid plants. The aim of this study was the induction and regeneration of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/06/2012
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5. Identification of quantitative trait loci for resistance against soybean sudden death syndrome caused by Fusarium tucumaniae.
The objective of this work was to identify genomic regions that underlie resistance to Fusarium tucumaniae sp. nov., the causing agent of sudden death syndrome (SDS) in soybean in South America, using a population with a genetic background different from that previously reported for Fusarium virguliforme sp. nov. (F. solani f. sp. glycines), also responsible
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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6. Polymorphic microsatellite marker set for Carica papaya L. and its use in molecular-assisted selection.
Conventional methods for the selection of papaya pure lines are time-consuming. Procedures involving the use of molecular markers and the indirect selection of homozygous plants can reduce this time considerably. The objective of this study was to evaluate the informativeness of a microsatellite marker set when used in marker-assisted selection (MAS) for the
Euphytica. Publicado em: 2011
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7. Influence of plant height and of leaf number on maize production at high plant densities.
This experiment was conducted in Ames, Iowa, US, with the purpose of verifying if reduction in plant height, through the use of dwarfing genes, or leaf number, by growing short season genotypes, can be a useful strategy to reduce barrenness and improve maize tolerance to drought and high plant population stresses. Five genotypes were tested: a full season hy
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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8. Skin and lung carcinogenesis in mice Selected for acute inflammatory response (AIR). / Carcinogênese de pele e pulmão em linhagens de camundongos selecionados segundo a reatividade inflamatória aguda.
AIRmax mice are resistant and AIRmin susceptible to skin carcinogenesis by repeated DMBA doses. AIRmin mice developed initial contact hypersensitivity reaction (CHS) and late skin and lung tumors. The aryl hydrocarbon receptor (AHR) plays important roles in DMBA metabolism. Upon binding to agonist this transcription factor induces the expression of CYP P450
Publicado em: 2007
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9. Estimation of m+aâand d and the potential single cross of maize hybrids for line extraction
The purposes of this study were to estimate the contribution of heterozygous loci (d) and the contribution of homozygous loci (m+aâ) for morphophisiological characters and to verify the potential of commercial maize hybrids for breeding programs. F1 and F2 generations of ten commercial single cross hybrids were used (DKB 199, 30F90, A2555, DKB 333B, DOW 657
Publicado em: 2007
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10. InduÃÃo de calos e embriogÃnese em anteras de Coffea arabica L. / Induction of anther calli and embryogenesis in Coffea arabica L.
Coffee breeding through convention methods, especially hybridization, followed by population selection, progeny evaluation, back-crossings and inter-specific crossings is a time consuming process that can demand for more than 30 years to obtain a new cultivar. It is possible to reduce this time by producing homozygous lines, from di-haploids, obtained from a
Publicado em: 2007
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11. Controle genÃtico da resistÃncia à Meloidogyne incognita nas cultivares de alface Grand Rapids e Salinas 88 / Resistance of the lettuce cultivar Salinas 88 to Meloidogyne incognita (Kofoid &White) Chitwood.
In spite of the advances in plant breeding, horticulture still faces problems such as the incidence of root-knot nematodes (Meloidogyne spp.), which are difficult to control. Varietal resistance is the most efficient and economical form of controling the pathogen. Few studies have been effected on nematode resistance in lettuce and its genetic control. These
Publicado em: 2006
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12. Caracterização funcional de uma provável nucleoporina que interage com a proteína NSP de geminivírus / Functional characterization of a putative nucleoporin-like protein interacting with the geminivirus protein NSP
The family Geminiviridae is a diverse family of plant virus. The Cabbage leaf curl virus (CaLCuV) of Begomovirus genus possess two genomic components of singlestranded DNA, DNA-A and DNA-B. The DNA-A is required for replication, transactivaction and encapsidation of the viral genome. The DNA-B is required for the virus movement, in which NSP is coded. NSP tr
Publicado em: 2006