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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 : 121 | |
| 29. |  | ROSSO, E. D. da S.; CARVALHO, H. G. de; YOKOO, M. J. I.; FERREIRA, A. P. L. Algoritmo para minimização da endogamia e maximização de índice econômico em sistemas de acasalamento. In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 12., 2022, Bagé, RS. Resumos... Bagé: Embrapa Pecuária Sul, 2022. p. 11. Ana Cristina Mazzocato, editora técnica.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 31. | | SCHMIDT, P. I.; CAMPOS, G. S.; CAETANO, V. O.; SIMÕES, M. S.; BOLIGON, A. A.; YOKOO, M. J. I. Análise genética de características relacionadas ao crescimento, temperamento e resistência a parasitas na raça Brangus. In: ENCONTRO DE PÓS-GRADUAÇÃO, 20.; SEMANA INTEGRADA DE ENSINO, PESQUISA E EXTENSÃO, 4., 2018, Pelotas. Anais eletrônicos... Pelotas: UFPel, 2018. ENPOS.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 32. | | KIPPER, D. K.; YOKOO, M. J. I.; NALERIO, E. S.; GIONGO, C.; GENRO, T. C. M.; FARIAS, B, M. de. Avaliação das características de carcaça de animais da raça Hereford alimentados em pastagens nativas: resultados iniciais. In: SALÃO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 3., 2013, Bagé. Resumos... Bagé: Embrapa Pecuária Sul, 2013. p. 9.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 33. | | MINUZZI, S. W.; FREITAS, A.; GIONGO, C.; DAME, M. C. F.; YOKOO, M. J. I.; NALERIO, E. S. Avaliação de carcaças de animais da raça Charolês e de suas cruzas: dados parciais. In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 6., 2016, Bagé. Resumos... Bagé: Embrapa Pecuária Sul, 2016. p. 13. Claudia Cristina Gulias Gomes, editora técnica.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 35. | | CAMPOS, G. S.; BOLIGON, A. A.; YOKOO, M. J. I.; SOLLERO, B. P.; BRACCINI NETO, J.; CARDOSO, F. F. Acurácia da seleção genômica para características de crescimento e escores visuais ao sobreano em bovinos Hereford e Braford. In: SIMPÓSIO BRASILEIRO DE MELHORAMENTO ANIMAL, 11., 2015, Santa Maria, RS. Melhoramento animal da academia ao campo: uma parceria em construção: anais. Santa Maria, RS: SBMA: UFSM, 2015.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 36. | | FERREIRA, C. N.; SIMÕES, M. da R. S.; MINHO, A. P.; CARDOSO, F. F.; YOKOO, M. J. I. Acurácias das predições do valor genético para a característica OPG estimadas com e sem o uso da genômica em Brangus. In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 8., 2018, Bagé. Resumos... Bagé: Embrapa Pecuária Sul, 2018. p. 9. (Embrapa Pecuária Sul. Eventos técnicos & científicos, 1). Fernando Flores Cardoso, Daniel Portella Montardo, José Carlos Ferrugem Moraes, Marcos Flávio Silva Borba, Sandro da Silva Camargo, editores técnicos.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 38. | | SCHMIDT, P. I.; CAMPOS, G. S.; CAETANO, V. O.; SIMÕES, M. S.; YOKOO, M. J. I.; BOLIGON, A. A. Índices econômicos de seleção para bovinos da raça Brangus. In: CONGRESSO DE INICIAÇÃO CIENTÍFICA, 27.; SEMANA INTEGRADA DE ENSINO, PESQUISA E EXTENSÃO, 4., 2018, Pelotas. Anais eletrônicos... Pelotas: UFPel, 2018. CIC.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 39. | | TEIXEIRA, B. B. M.; COSTA, R. F. da; SOLLERO, B. P.; YOKOO, M. J. I.; CARDOSO, F. F. Herdabilidades e correlações genéticas para critérios de seleção das raças Hereford e Braford. In: SIMPÓSIO BRASILEIRO DE MELHORAMENTO ANIMAL, 11., 2015, Santa Maria, RS. Melhoramento animal da academia ao campo: uma parceria em construção: anais. Santa Maria, RS: SBMA: UFSM, 2015.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| Registros recuperados : 121 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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