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Registros recuperados: 28 | |
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SOUSA, S. M. de; CLARK, R. T.; MENDES, F. F.; OLIVEIRA, A. C. de; KOCHIAN, L. V.; VASCONCELOS, M. J. V. de; CARNEIRO, N. P.; PARENTONI, S. N.; GUIMARAES, C. T.; MAGALHAES, J. V.. |
Tipo: Parte de livro |
Palavras-chave: Milho; Genética vegetal; Zea Mays.. |
Ano: 2011 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/905561 |
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BERNARDINO, K. C.; MENEZES, C. B. de; SOUSA, S. M. de; GUIMARÃES, C. T.; CARNEIRO, P. C. S.; SCHAFFERT, R. E.; KOCHIAN, L. V.; HUFNAGEL, B.; PASTINA, M. M.; MAGALHAES, J. V. de. |
Tropical soils where low phosphorus (P) and aluminum (Al) toxicity limit sorghum [Sorghum bicolor (L.) Moench] production are widespread in the developing world. We report on BRP13R, a multiparental random mating population (MPRMP), which is commonly used in sorghum recurrent selection targeting tropical soil adaptation. Recombination dissipated much of BRP13R?s likely original population structure and average linkage disequilibrium (LD) persisted up to 2.5 Mb, establishing BRP13R as a middle ground between biparental populations and sorghum association panels. Genome-wide association mapping (GWAS) identifed conserved QTL from previous studies, such as for root morphology and grain yield under low-P, and indicated the importance of dominance in the... |
Tipo: Artigo de periódico |
Palavras-chave: Seleção genômica; Sorgo; Genética Vegetal; Gene; Melhoramento Genético Vegetal. |
Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1125512 |
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CANIATO, F. F.; HAMBLIN, M. T.; GUIMARAES, C. T.; ZHANG, Z.; SCHAFFERT, R. E.; KOCHIAN, L. V.; MAGALHAES, J. V.. |
Root damage caused by aluminum (Al) toxicity is a major cause of grain yield reduction on acid soils, which are prevalent in tropical and subtropical regions of the world where food security is most tenuous. In sorghum, Al tolerance is conferred by SbMATE, an Al-activated root citrate efflux transporter that underlies the major Al tolerance locus, AltSB, on sorghum chromosome 3. We used association mapping to gain insights into the origin and evolution of Al tolerance in sorghum and to detect functional variants amenable to allele mining applications. Linkage disequilibrium across the AltSB locus decreased much faster than in previous reports in sorghum, and reached basal levels at approximately 1000 bp. Accordingly, intralocus recombination events were... |
Tipo: Artigo de periódico |
Palavras-chave: Sorgo; Alumínio; Toxidez; Melhoramento genético vegetal; Sorghum bicolor; Plant breeding; Toxicity. |
Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/979541 |
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MAGALHAES, J. V. de; WANG, Y.; KLEIN, P. E.; GUIMARAES, C. T.; LANA, U. G. de P.; SCHAFFERT, R. E.; ALVES, V. M. C.; HOEKENGA, O. A.; CARNEIRO, N. P.; CARNEIRO, A. A.; KOCHIAN, L. V.. |
Tipo: Parte de livro |
Palavras-chave: Sorgo; Genética.. |
Ano: 2008 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/491807 |
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MAGALHAES, J. V. de; PIÑEROS, M. A.; MACIEL, L. S.; KOCHIAN, L. V.. |
Aluminum (Al) toxicity on acidic soils significantly damages plant roots and inhibits root growth. Hence, crops intoxicated by Al become more sensitive to drought stress and mineral nutrient deficiencies, particularly phosphorus (P) deficiency, which is highly unavailable on tropical soils. Advances in our understanding of the physiological and genetic mechanisms that govern plant Al resistance have led to the identification of Al resistance genes, both in model systems and in crop species. It has long been known that Al resistance has a beneficial effect on crop adaptation to acidic soils. This positive effect happens because the root systems of Al resistant plants show better development in the presence of soil ionic Al3C and are, consequently, more... |
Tipo: Artigo de periódico |
Palavras-chave: Melhoramento Vegetal; Alumínio; Fósforo. |
Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1096304 |
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HUFNAGEL, B.; GUIMARÃES, C. T.; CRAFT, E. J.; SHAFF, J. E.; SCHAFFERT, R. E.; KOCHIAN, L. V.; MAGALHAES, J. V.. |
Root damage due to aluminum (Al) toxicity restricts crop production on acidic soils, which are extensive in the tropics. The sorghum root Al-activated citrate transporter, SbMATE, underlies the Al tolerance locus, AltSB, and increases grain yield under Al toxicity. Here, AltSB loci associated with Al tolerance were converted into Amplification Refractory Mutation System (ARMS) markers, which are cost effective and easy to use. A DNA pooling strategy allowed us to identify accessions harboring rare favorable AltSB alleles in three germplasm sets while greatly reducing genotyping needs. Population structure analysis revealed that favorable AltSB alleles are predominantly found in subpopulations enriched with guinea sorghums, supporting a possible Western... |
Tipo: Artigo de periódico |
Palavras-chave: Tolerância; Toxicidade; Alumínio; Germoplasma; Marcador Genético; Sorgo. |
Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1093494 |
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ALVES, V. M. C.; MAGALHAES, J. V. de; SHAFF, J. E.; PINEROS, M. A.; PURCINO, A. A. C.; PARENTONI, S. N.; PITTA, G. V. E.; PRATES, H. T.; SCHAFFERT, R. E.; KOCHIAN, L. V.. |
Tipo: Parte de livro |
Palavras-chave: Tolerancia; Envolvimento; Acidos organicos; Maize; Aluminium; Tolerance; Organic acid.; Alumínio; Exsudação; Milho; Zea Mays.; Exudation.. |
Ano: 2001 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/485136 |
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CANIATO, F. F.; GUIMARAES, C. T.; SCHAFFERT, R. E.; ALVES, V. M. C.; KOCHIAN, L. V.; BOREM, A.; KLEIN, P. E.; MAGALHAES, J. V.. |
Genetic variation for aluminum (Al) tolerance in plants has allowed the development of cultivars that are high yielding on acidic, Al toxic soils. However, knowledge of intraspecific variation for Al tolerance control is needed in order to assess the potential for further Al tolerance improvement. Here we focused on the major sorghum Al tolerance gene, Alt SB , from the highly Al tolerant standard SC283 to investigate the range of genetic diversity for Al tolerance control in sorghum accessions from diverse origins. Two tightly linked STS markers flanking Alt SB were used to study the role of this locus in the segregation for Al tolerance in mapping populations derived from different sources of Al tolerance crossed with a common Al sensitive tester, BR012,... |
Tipo: Artigo de periódico |
Palavras-chave: Sorgo; Variação Genética. |
Ano: 2007 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/490423 |
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MELO, J. O.; LANA, U. G. P.; GUIMARAES, C. T.; NODA, R. W.; LIU, J.; KOCHIAN, L. V.; MITCHELL, S. E.; FEI, Z.; CANO, V. S. P.; SCHAFFERT, R. E.; MAGALHAES, J. V.. |
Tipo: Parte de livro |
Palavras-chave: Sorgo; Alumínio; Toxicity. |
Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/977218 |
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KOCHIAN, L. V.; MAGALHAES, J.; GUIMARAES, C.; ALVES, V.; CARNEIRO, N.; CARNEIRO, A.; SCHAFFERT, R.; BRAMMER, S.; CONSOLI, L.; SILVA JUNIOR, J. P. da; MINELLA, E.; CAIERAO, E.; NASCIMENTO JUNIOR, A. do; BRESEGHELLO, F.; NEVES, P.; GUDU, S.; MARON, L.; HOEKENGA, O.; LIU, J.; BUCKLER, E.. |
Research activities and progress: sorghum and maize Al tolerance. Field testing in Africa. Tangible outputs. |
Tipo: Parte de livro |
Palavras-chave: Alumínio; Genética; Melhoramento.. |
Ano: 2008 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/864862 |
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KOCHIAN, L. V.; MAGALHAES, J.; GUIMARÃES, C.; ALVES, V.; CARNEIRO, N.; CARNEIRO, A.; SCHAFFERT, R.; BRAMMER, S.; CONSOLI, L.; SILVA JUNIOR, J. P. da; MINELLA, E.; CAIERÃO, E.; NASCIMENTO JUNIOR, A.; BRESEGHELLO, F.; NEVES, P.; GUDU, S.; MARON, L.; HOEKENGA, O.; LIU, J.; BUCKLER, E.. |
Research activities and progress: sorghum and maize Al tolerance. Field testing in Africa. Tangible outputs. |
Tipo: Parte de livro |
Palavras-chave: Genética molecular; Cereal; Alumínio; Sorgo; Milho. |
Ano: 2008 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/882161 |
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Registros recuperados: 28 | |
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