Maize Breeding
Mostrando 13-24 de 99 artigos, teses e dissertações.
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13. Downregulation of caffeoyl-CoA O-methyltransferase (CCoAOMT) by RNA interference leads to reduced lignin production in maize straw
Lignin is a major cell wall component of vascular plants that provides mechanical strength and hydrophobicity to vascular vessels. However, the presence of lignin limits the effective use of crop straw in many agroindustrial processes. Here, we generated transgenic maize plants in which the expression of a lignin biosynthetic gene encoding CCoAOMT , a key en
Genet. Mol. Biol.. Publicado em: 25/10/2013
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14. Epistasia em testecrosses de milho / Epistasis in maize testcrosses
Epistasis has been known since the beginning of the genetics studies. However its contribution to genetic variance components and to plant breeding is not well understood. Most of the genetic models designed to study the inheritance of the quantitative traits consider the absence of epistasis although most of these analyses dont provide test for such assumpt
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/08/2011
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15. Seleção genômica ampla e novos métodos de melhoramento do milho / Genome wide selection and new methods of maize breeding
The evaluation for nutrient efficiency use (UE) generally use destructive methods of the plant, not allowing, depending on the population genetic structure, using those identified as superior in hybridizations. Consequently, there is a reduction in the potential gains with selection. Additionally, some conventional breeding methods, such as the recurrent sel
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2011
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16. Approaches to breeding programs and genomics studies Aiming Tropical Maize characterization for water stress and drought tolerance in Brazill.
2006
CONGRESSO NACIONAL DE MILHO E SORGO. Publicado em: 2011
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17. Combining ability of twelve maize populations.
Genetic progress depends on germplasm quality and breeding methods. Twelve maize populations and their crosses were evaluated to estimate combining ability and potential to be included as source populations in breeding programs. Plant height, point of insertion of the first ear, number of ears per plant, number of grains per ear, root and stalk lodging and g
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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18. Melhoramento vegetal participativo com ênfase na eficiência nutricional.
ABSTRACT: Participatory plant breeding uses a concept that joint formal (official researches institutions) and informal sector (farmers communities), combining the capabilities and the knowledge of both, and farmer's experiences, practices, and preferences. The goal is to join the yield improvement exploring the availabel farmer's agrobiodiversity and introd
Planaltina. Publicado em: 2011
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19. Combining ability of maize grain yield under different levels of environmental stress.
Abstract ? The objectives of this work were to caracterize the tropical maize germplasm and to compare the combining abilities of maize grain yield under different levels of environmental stress. A diallel was performed among tropical maize cultivars with wide adaptability, whose hybrid combinations were evaluated in two sowing dates, in two years. The signi
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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20. Prolificidade em milho. 1. tipificacao e estrategias para o melhoramento.
1999
Sete Lagoas: EMBRAPA-CNPMS. Publicado em: 2011
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21. Evaluation of maize core collection for drought tolerance.
The maize genebank (GBmaize) preserves nearly 4,000 accessions for conservation and use. The use is however restricted because the accessions do not performs as well as the elite genotypes. This problem can be reduced by pre-breeding, i. e., by extending the information on germplasm and introgressing useful alleles. Since irregular rainfall distribution and
Crop Breeding and Applied Biotechnology. Publicado em: 2011
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22. BRS 4150 variedade de milho para a regiao Sul.
1999
Sete Lagoas: EMBRAPA-CNPMS. Publicado em: 2011
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23. Phosphorus acquisition and internal utilization efficiency in tropical maize genotypes.
The objective of this work was to determine the relative importance of phosphorus acquisition efficiency (PAE ? plant P uptake per soil available P), and phosphorus internal utilization efficiency (PUTIL ? grain yield per P uptake) in the P use efficiency (PUE ? grain yield per soil available P), on 28 tropical maize genotypes evaluated at three low P and tw
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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24. Calcium partially relieves the deleterius effects of hypoxia on a maize cultivar selected for waterlogging tolerance.
Low soil oxygen concentrations due to waterlogging or transient flooding severely reduce maize production. However, genotypes with tolerance or even resistance to hypoxia develop morphological and biochemical adaptation mechanisms which may prove to be useful criteria for the selection and breeding of new improved genotypes. The objective of this work was to
Revista Brasileira de Milho e Sorgo. Publicado em: 2011