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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
05/07/1996 |
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Data da última atualização: |
29/05/2018 |
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Autoria: |
MENEZES, E. A. |
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Afiliação: |
EDUARDO ASSIS MENEZES, CPATSA. |
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Título: |
Some aspects of drought resistance in soybean. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
Stillwater: Oklahoma State University, 1978. |
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Páginas: |
39 p. |
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Idioma: |
Inglês |
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Notas: |
Dissertacao Mestrado. |
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Conteúdo: |
Three experiments were conducted to study the ability of soybean seedlings to withstand repeated drought cycles under controlled environmental conditions, root characteristics in relation to drought conditions, and the ability of soybean seeds to germinate and develop under different osmotic concentrations. The experimental material included 24 soybean varieties ranging from Group III to Group VII of maturity. In thefirst experiment, seedlings were grown in metal trays in a growth chamber and subjected to five sucessive cycles of droutht followed by rewatering. The results showed small reduction of plant survivors in the first two cycles, but a great loss of plants after the ghird drouthg cycle, and further losses in thefourth and fifth cycles. In the second experiment, seedlings were grown in plastic pots filled with washed sand. after 18 days in the growth chamber with adequate moisture, root wer weight, lenght, volume, and root/shoot ratio were measured. The analyses of variance showed significant varietal differences in all four characters. The most drought resistant varieties are expected to have heavier root weights, greater root volume, longer roots, and higher root/shoot ratios. In the third experiment, the seeds were germinated in six different concentrations of d-mannitol solutions. The percentage germination indicated that there was a small reduction in germination as the osmotic pressure increased. Seedling lenght decreased more markedly as the osmotic pressure increased. The varieties differed(...). MenosThree experiments were conducted to study the ability of soybean seedlings to withstand repeated drought cycles under controlled environmental conditions, root characteristics in relation to drought conditions, and the ability of soybean seeds to germinate and develop under different osmotic concentrations. The experimental material included 24 soybean varieties ranging from Group III to Group VII of maturity. In thefirst experiment, seedlings were grown in metal trays in a growth chamber and subjected to five sucessive cycles of droutht followed by rewatering. The results showed small reduction of plant survivors in the first two cycles, but a great loss of plants after the ghird drouthg cycle, and further losses in thefourth and fifth cycles. In the second experiment, seedlings were grown in plastic pots filled with washed sand. after 18 days in the growth chamber with adequate moisture, root wer weight, lenght, volume, and root/shoot ratio were measured. The analyses of variance showed significant varietal differences in all four characters. The most drought resistant varieties are expected to have heavier root weights, greater root volume, longer roots, and higher root/shoot ratios. In the third experiment, the seeds were germinated in six different concentrations of d-mannitol solutions. The percentage germination indicated that there was a small reduction in germination as the osmotic pressure increased. Seedling lenght decreased more markedly as the osmotic pressure i... Mostrar Tudo |
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Palavras-Chave: |
Drought resistance; Seedling; Soybean. |
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Thesagro: |
Resistência a Seca; Semente; Soja. |
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Thesaurus Nal: |
Soybeans. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 02080nam a2200217 a 4500
001 1132542
005 2018-05-29
008 1978 bl uuuu m 00u1 u #d
100 1 $aMENEZES, E. A.
245 $aSome aspects of drought resistance in soybean.
260 $aStillwater: Oklahoma State University$c1978
300 $a39 p.
500 $aDissertacao Mestrado.
520 $aThree experiments were conducted to study the ability of soybean seedlings to withstand repeated drought cycles under controlled environmental conditions, root characteristics in relation to drought conditions, and the ability of soybean seeds to germinate and develop under different osmotic concentrations. The experimental material included 24 soybean varieties ranging from Group III to Group VII of maturity. In thefirst experiment, seedlings were grown in metal trays in a growth chamber and subjected to five sucessive cycles of droutht followed by rewatering. The results showed small reduction of plant survivors in the first two cycles, but a great loss of plants after the ghird drouthg cycle, and further losses in thefourth and fifth cycles. In the second experiment, seedlings were grown in plastic pots filled with washed sand. after 18 days in the growth chamber with adequate moisture, root wer weight, lenght, volume, and root/shoot ratio were measured. The analyses of variance showed significant varietal differences in all four characters. The most drought resistant varieties are expected to have heavier root weights, greater root volume, longer roots, and higher root/shoot ratios. In the third experiment, the seeds were germinated in six different concentrations of d-mannitol solutions. The percentage germination indicated that there was a small reduction in germination as the osmotic pressure increased. Seedling lenght decreased more markedly as the osmotic pressure increased. The varieties differed(...).
650 $aSoybeans
650 $aResistência a Seca
650 $aSemente
650 $aSoja
653 $aDrought resistance
653 $aSeedling
653 $aSoybean
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Registro original: |
Embrapa Semiárido (CPATSA) |
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| Registros recuperados : 22 | |
| 10. |  | SOUTO, E. R.; ALMEIDA, A. M. R.; BIANCHINI, A.; SARTORI, F.; CALVO, E. S. Análise molecular de segmento do RNA2 de Comovirus isolados de soja no estado do Paraná. Fitopatologia Brasileira, Brasília, v. 27, n.5, p. 525-527, set./out. 2002.| Biblioteca(s): Embrapa Soja. |
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| 11. | | SOUTO, E. R.; ALMEIDA, A. M. R.; BIANCHINI, A.; SARTORI, F.; CALVO, E. S. Análise molecular de segmento do RNA2 de comovirus isolados de soja no Paraná. Fitopatologia Brasileira, v. 25, p. 449-450, ago. 2000. Suplemento, ref. 639. Edição dos Resumos do XXXIII Congresso Brasileiro de Fitopatologia, Belem, ago. 2000.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 12. | | FUKUSHIGUE, C. Y.; SOUTO, E. R.; ALMEIDA, A. M. R.; SARTORI, F.; CALVO, E. S. Biological and molecular properties of a new potyvirus isolated from Alternanthara tenella. Fitopatologia Brasileira, v. 25, p. 441, ago. 2000. Suplemento, ref. 597. Edição dos Resumos do XXXIII Congresso Brasileiro de Fitopatologia, Belem, ago. 2000.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 13. | | ALMEIDA, A. M. R.; ABDELNOOR, R. V.; CALVO, E. S.; TESSNMAN, D.; YORINORI, J. T. Genotypic diversity among brazilian isolates of Sclerotium rolfsii. Journal of Phytopathology, Berlin, v. 149, n. 9, p. 493-502, 2001.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - B |
| Biblioteca(s): Embrapa Soja. |
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| 15. | | BONATO, A. L. V.; CALVO, E. S.; GERALDI, I. O.; ARIAS, C. A. A. Genetic similarity between soybean cultivars released in Brazil, using AFLP markers. 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. 254-255. (Embrapa Soja. Documentos, 228). Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi.| Biblioteca(s): Embrapa Soja. |
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| 17. | | ALMEIDA, A. M. R.; SARTORI, F.; CALVO, E. S.; MARIN, S. R. R.; FUKUJI, T. S. Diferenciação morfo-bio-molecular de isolados de Cercospora kikuchii obtidos de sementes de soja, no Brasil. Fitopatologia Brasileira, v. 26, p. 328, ago. 2001. Suplemento. Resumo 224. Edição do XXXIV Congresso Brasileiro de Fitopatologia, São Pedro, SP, ago. 2001.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 19. | | KOGA, L. J.; CANTERI, M. G.; CALVO, E. S.; UNFRIED, J. R.; GARCIA, A.; HARADA, A.; KIIHL, R. A. de S. Análise multivariada dos componentes da resistência à ferrugem-asiática em genótipos de soja. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 10, p. 1277-1286, out. 2008. Título em inglês: Multivariate analysis of resistance components to Asian rust in soybean genotypes.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 20. | | MORCELI, T. G. S.; TREVISOLI, S. H. U.; MORCELI JUNIOR, A. A.; KIIHL, R. A. de S.; CALVO, E. S.; DI MAURO, A. O.; GARCIA, A. Identificação e validação de marcadores microssatélites ligados ao gene Rpp5 de resistência à ferrugem-asiática-da-soja. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 11, p. 1525-1531, nov. 2008. Título em inglês: Identification and validation of microsatellite markers linked to the Rpp5 gene conferring resistance to Asian soybean rust.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 22 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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