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Registro Completo |
Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
Data corrente: |
09/09/2015 |
Data da última atualização: |
05/04/2016 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SOUZA, S. F. de; ANDRADE, B. M. S.; SANTOS, C. M. C.; RANGEL, J. H. de A.; MORAIS, J. A. S.; SANTOS, G. R. A.; ALMEIDA, M. R. M. de. |
Afiliação: |
SAMUEL FIGUEIREDO DE SOUZA, CPATC; JOSE HENRIQUE DE ALBUQUERQUE RANGEL, CPATC; MARCIO ROGERS MELO DE ALMEIDA, CPATC. |
Título: |
Chemical composition of gliricidia in different regions of the Sergipe state. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FOREST SYSTEMS, 3.; INTERNATIONAL SYMPOSIUM ON INTEGRATED CROP-LIVESTOCK SYSTEMS, 3., 2015, Brasília, DF. Towards sustainable intensification: [proceedings..]. Brasília, DF: Embrapa, 2015. |
Idioma: |
Português |
Conteúdo: |
In Brazil, the use of tropical forage legumes with high protein content have been a viable alternative to reduce costs of diets, however most livestock systems are susceptible to temperature rising and water scarcity, leading to a significant decline in forage production in dry periods (Aroeira et al., 2011). |
Palavras-Chave: |
Sergipe. |
Thesaurus Nal: |
Faboideae; Forage. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/129223/1/OK-Gliricidia-in-different-regions-AMQT.pdf
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Marc: |
LEADER 01131nam a2200217 a 4500 001 2023487 005 2016-04-05 008 2015 bl uuuu u00u1 u #d 100 1 $aSOUZA, S. F. de 245 $aChemical composition of gliricidia in different regions of the Sergipe state.$h[electronic resource] 260 $aIn: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FOREST SYSTEMS, 3.; INTERNATIONAL SYMPOSIUM ON INTEGRATED CROP-LIVESTOCK SYSTEMS, 3., 2015, Brasília, DF. Towards sustainable intensification: [proceedings..]. Brasília, DF: Embrapa$c2015 520 $aIn Brazil, the use of tropical forage legumes with high protein content have been a viable alternative to reduce costs of diets, however most livestock systems are susceptible to temperature rising and water scarcity, leading to a significant decline in forage production in dry periods (Aroeira et al., 2011). 650 $aFaboideae 650 $aForage 653 $aSergipe 700 1 $aANDRADE, B. M. S. 700 1 $aSANTOS, C. M. C. 700 1 $aRANGEL, J. H. de A. 700 1 $aMORAIS, J. A. S. 700 1 $aSANTOS, G. R. A. 700 1 $aALMEIDA, M. R. M. de
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Embrapa Tabuleiros Costeiros (CPATC) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
06/04/2004 |
Data da última atualização: |
27/07/2007 |
Autoria: |
BIONE, N. C. P.; PAGLIARINI, M. S.; ALMEIDA, L. A. de. |
Título: |
Meiotic mutations causing male sterility in soybean [Glycine max (L.) Merrill]. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
In: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004. |
Páginas: |
p. 240-241. |
Série: |
(Embrapa Soja. Documentos, 228).
|
Idioma: |
Inglês |
Notas: |
Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi. |
Conteúdo: |
Meiosis, a universal process in the life history of sexual organisms, provides opportunities for genetic re-assortment. Molecular data suggest that this process possesses a very conservative set of genes controlling each divisional step. Mutations that selectively eliminate male reproductive function and leave female function unimpaired have potential application in hybrid seed production. Mutations affecting microsporogenesis and causing complete male sterility has been detected in some lines from Embrapa Soybean breeding program. In the line BR97-13777H, many univalents and few bivalents were found in diakinesis. The main and distinctive characteristic of this mutant was the complete inability of univalents to congregate in the metaphase plate. Scattered in the cytoplasm, univalents underwent premature sister chromatid separation, so that 80 chromatids could be easily counted. Telophases II with a varied number of different-sized nuclei were observed. The inability of univalents to congregate at the equator made us classify it as asynaptic mutant. A desynaptic mutation has been detected in BR97-12986H. The meiotic behavior was similar to that described for the st series of synaptic mutants previously reported in soybean. Distinctly different in their behavior from st series soybean mutants, telophase I micronuclei of different sizes organized their own spindle in the second division. This behavior contributed towards an increase in genome fractionation. Several microspores and microcytes of different sizes were recorded at the end of meiosis. A mutation affecting microspore development was detected in the line BR97-13509H. The main cause of male sterility was the absence of cytokinesis after telophase II. Instead of the typical tetrads of microspores four nucleate coenocytic microspores were formed. In the line BR97-17971, analyses of microsporogenesis revealed a differential meiotic behaviour in relation to ms2. Sterile plants have different levels of meiotic abnormalities related to chromosome segregation. The main meiotic cause of pollen sterility was the absent or the defective cytokinesis following telophase II. After telophase II, 1 to 4 nucleate microspores underwent degeneration. Cross-sections of sterile plants showed that at telophase II the tapetal cells with large vacuoles entered degeneration. Despite callose deposition around meiocytes, sterile plants did not form tetrads. They degenerated and collapsed after callose dissolution, forming an amorphous mass. Anthers from male-sterile plants were shrivelled. Up to date, several male-sterile, female fertile soybean mutants have been reported. It is very intriguing why most of them share the same cytological characteristics although they are non-allelic. Studies of genome organisation and linkage could help us to understand better why sterile mutations of independent loci shared the same cytological expressions. MenosMeiosis, a universal process in the life history of sexual organisms, provides opportunities for genetic re-assortment. Molecular data suggest that this process possesses a very conservative set of genes controlling each divisional step. Mutations that selectively eliminate male reproductive function and leave female function unimpaired have potential application in hybrid seed production. Mutations affecting microsporogenesis and causing complete male sterility has been detected in some lines from Embrapa Soybean breeding program. In the line BR97-13777H, many univalents and few bivalents were found in diakinesis. The main and distinctive characteristic of this mutant was the complete inability of univalents to congregate in the metaphase plate. Scattered in the cytoplasm, univalents underwent premature sister chromatid separation, so that 80 chromatids could be easily counted. Telophases II with a varied number of different-sized nuclei were observed. The inability of univalents to congregate at the equator made us classify it as asynaptic mutant. A desynaptic mutation has been detected in BR97-12986H. The meiotic behavior was similar to that described for the st series of synaptic mutants previously reported in soybean. Distinctly different in their behavior from st series soybean mutants, telophase I micronuclei of different sizes organized their own spindle in the second division. This behavior contributed towards an increase in genome fractionation. Several microspores... Mostrar Tudo |
Categoria do assunto: |
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Marc: |
LEADER 03808naa a2200181 a 4500 001 1466821 005 2007-07-27 008 2004 bl uuuu u00u1 u #d 100 1 $aBIONE, N. C. P. 245 $aMeiotic mutations causing male sterility in soybean [Glycine max (L.) Merrill]. 260 $c2004 300 $ap. 240-241. 490 $a(Embrapa Soja. Documentos, 228). 500 $aEditado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi. 520 $aMeiosis, a universal process in the life history of sexual organisms, provides opportunities for genetic re-assortment. Molecular data suggest that this process possesses a very conservative set of genes controlling each divisional step. Mutations that selectively eliminate male reproductive function and leave female function unimpaired have potential application in hybrid seed production. Mutations affecting microsporogenesis and causing complete male sterility has been detected in some lines from Embrapa Soybean breeding program. In the line BR97-13777H, many univalents and few bivalents were found in diakinesis. The main and distinctive characteristic of this mutant was the complete inability of univalents to congregate in the metaphase plate. Scattered in the cytoplasm, univalents underwent premature sister chromatid separation, so that 80 chromatids could be easily counted. Telophases II with a varied number of different-sized nuclei were observed. The inability of univalents to congregate at the equator made us classify it as asynaptic mutant. A desynaptic mutation has been detected in BR97-12986H. The meiotic behavior was similar to that described for the st series of synaptic mutants previously reported in soybean. Distinctly different in their behavior from st series soybean mutants, telophase I micronuclei of different sizes organized their own spindle in the second division. This behavior contributed towards an increase in genome fractionation. Several microspores and microcytes of different sizes were recorded at the end of meiosis. A mutation affecting microspore development was detected in the line BR97-13509H. The main cause of male sterility was the absence of cytokinesis after telophase II. Instead of the typical tetrads of microspores four nucleate coenocytic microspores were formed. In the line BR97-17971, analyses of microsporogenesis revealed a differential meiotic behaviour in relation to ms2. Sterile plants have different levels of meiotic abnormalities related to chromosome segregation. The main meiotic cause of pollen sterility was the absent or the defective cytokinesis following telophase II. After telophase II, 1 to 4 nucleate microspores underwent degeneration. Cross-sections of sterile plants showed that at telophase II the tapetal cells with large vacuoles entered degeneration. Despite callose deposition around meiocytes, sterile plants did not form tetrads. They degenerated and collapsed after callose dissolution, forming an amorphous mass. Anthers from male-sterile plants were shrivelled. Up to date, several male-sterile, female fertile soybean mutants have been reported. It is very intriguing why most of them share the same cytological characteristics although they are non-allelic. Studies of genome organisation and linkage could help us to understand better why sterile mutations of independent loci shared the same cytological expressions. 700 1 $aPAGLIARINI, M. S. 700 1 $aALMEIDA, L. A. de 773 $tIn: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004.
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