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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
18/11/2003 |
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Data da última atualização: |
18/11/2003 |
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Autoria: |
CARPENTIERI-PÍPOLO, V.; ALMEIDA, L. A. de; KIIHL, R. A. de S. |
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Título: |
Inheritance of a long juvenile period under short-day conditions in soybean. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Genetics and Molecular Biology, Ribeirão Preto, v.25, n. 4, p. 463-469, 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
The long juvenile period (LJP) characteristic of soybean (Glycine max L. Merrill) cultivars delays flowering under short-day conditions. This trait may be important in increasing the adaptation range of soybean to low latitudes and provides greater flexibility for sowing times within the same latitude. The inheritance of the long juvenile period was studied in the MG/BR22 (Garimpo) soybean cultivar to provide knowledge to support the development of cultivars adapted to short day conditions. Four cultivars (?Paraná?, ?Bossier?, ?Bragg?, and ?Davis?) were crossed among each other and with MG/BR 22 (?Garimpo?). The study was conducted under short-day conditions (early sowing) in a greenhouse and in the field, in Londrina, Paraná, (23°22? south latitude). The parents and the F1, F2, and F3 populations were assessed daily for flowering. The genotype ratios of 15:1 (p > 0.95, c2 test) and 8:7:1 (p = 0.193) for the F2 and F3 generations, respectively, obtained for the Paraná x Bossier cross indicated a case of digenic interaction with a duplicate recessive epistatic effect for the LJP character. Segregation of the F2 population from the MG/BR 22 (Garimpo) x Paraná cross resulted in the expected ratio of 3:1 (p = 0.166, indicating that the MG/BR 22 (Garimpo) and Paraná cultivars differed at a single locus. Similarly, in the MG/BR 22 (Garimpo) x Bossier cross, a 3:1 (p = 0.065) segregation indicated that these two cultivars differed at a single locus for number of days to flowering. The Davis cultivar had the same gene for LJP as the Paraná cultivar (aa). The F2 segregation of the classic flowering Bragg with MG/BR 22 (Garimpo) cross resulted in a 15:1 (p = 0.138) ratio, indicating that these two cultivars differed at two loci for flowering. The genotypes assigned to the cultivars were aaBB for Paraná, AAbb for Bossier and aabb for MG/BR 22 (Garimpo). A single locus in recessive homozygosis does not produce LJP. MenosThe long juvenile period (LJP) characteristic of soybean (Glycine max L. Merrill) cultivars delays flowering under short-day conditions. This trait may be important in increasing the adaptation range of soybean to low latitudes and provides greater flexibility for sowing times within the same latitude. The inheritance of the long juvenile period was studied in the MG/BR22 (Garimpo) soybean cultivar to provide knowledge to support the development of cultivars adapted to short day conditions. Four cultivars (?Paraná?, ?Bossier?, ?Bragg?, and ?Davis?) were crossed among each other and with MG/BR 22 (?Garimpo?). The study was conducted under short-day conditions (early sowing) in a greenhouse and in the field, in Londrina, Paraná, (23°22? south latitude). The parents and the F1, F2, and F3 populations were assessed daily for flowering. The genotype ratios of 15:1 (p > 0.95, c2 test) and 8:7:1 (p = 0.193) for the F2 and F3 generations, respectively, obtained for the Paraná x Bossier cross indicated a case of digenic interaction with a duplicate recessive epistatic effect for the LJP character. Segregation of the F2 population from the MG/BR 22 (Garimpo) x Paraná cross resulted in the expected ratio of 3:1 (p = 0.166, indicating that the MG/BR 22 (Garimpo) and Paraná cultivars differed at a single locus. Similarly, in the MG/BR 22 (Garimpo) x Bossier cross, a 3:1 (p = 0.065) segregation indicated that these two cultivars differed at a single locus for number of days to flowering. ... Mostrar Tudo |
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Categoria do assunto: |
-- |
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URL: |
https://www.scielo.br/pdf/gmb/v25n4/14118.pdf
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Marc: |
LEADER 02403naa a2200145 a 4500
001 1444889
005 2003-11-18
008 2002 bl --- 0-- u #d
100 1 $aCARPENTIERI-PÍPOLO, V.
245 $aInheritance of a long juvenile period under short-day conditions in soybean.
260 $c2002
520 $aThe long juvenile period (LJP) characteristic of soybean (Glycine max L. Merrill) cultivars delays flowering under short-day conditions. This trait may be important in increasing the adaptation range of soybean to low latitudes and provides greater flexibility for sowing times within the same latitude. The inheritance of the long juvenile period was studied in the MG/BR22 (Garimpo) soybean cultivar to provide knowledge to support the development of cultivars adapted to short day conditions. Four cultivars (?Paraná?, ?Bossier?, ?Bragg?, and ?Davis?) were crossed among each other and with MG/BR 22 (?Garimpo?). The study was conducted under short-day conditions (early sowing) in a greenhouse and in the field, in Londrina, Paraná, (23°22? south latitude). The parents and the F1, F2, and F3 populations were assessed daily for flowering. The genotype ratios of 15:1 (p > 0.95, c2 test) and 8:7:1 (p = 0.193) for the F2 and F3 generations, respectively, obtained for the Paraná x Bossier cross indicated a case of digenic interaction with a duplicate recessive epistatic effect for the LJP character. Segregation of the F2 population from the MG/BR 22 (Garimpo) x Paraná cross resulted in the expected ratio of 3:1 (p = 0.166, indicating that the MG/BR 22 (Garimpo) and Paraná cultivars differed at a single locus. Similarly, in the MG/BR 22 (Garimpo) x Bossier cross, a 3:1 (p = 0.065) segregation indicated that these two cultivars differed at a single locus for number of days to flowering. The Davis cultivar had the same gene for LJP as the Paraná cultivar (aa). The F2 segregation of the classic flowering Bragg with MG/BR 22 (Garimpo) cross resulted in a 15:1 (p = 0.138) ratio, indicating that these two cultivars differed at two loci for flowering. The genotypes assigned to the cultivars were aaBB for Paraná, AAbb for Bossier and aabb for MG/BR 22 (Garimpo). A single locus in recessive homozygosis does not produce LJP.
700 1 $aALMEIDA, L. A. de
700 1 $aKIIHL, R. A. de S.
773 $tGenetics and Molecular Biology, Ribeirão Preto$gv.25, n. 4, p. 463-469, 2002.
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Embrapa Soja (CNPSO) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
10/01/2018 |
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Data da última atualização: |
10/01/2018 |
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Autoria: |
PAIVA SOBRINHO, S. de; ALBUQUERQUE, M. C. F. de; LUZ, P. B. da; NEVES, L. G.; CAMILI, E. C. |
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Afiliação: |
SEVERINO DE PAIVA SOBRINHO, UNIVERSIDADE DO ESTADO DE MATO GROSSO; UNIVERSIDADE FEDERAL DO MATO GROSSO; PETTERSON BAPTISTA DA LUZ, UNIVERSIDADE DO ESTADO DE MATO GROSSO; LEONARDA GRILLO NEVES, UNIVERSIDADE DO ESTADO DE MATO GROSSO; ELISANGELA CLARETE CAMILI, UNIVERSIDADE FEDERAL DO MATO GROSSO. |
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Título: |
Tolerance of jenipapo seeds to cryoprotectants and thawing after immersion in liquid nitrogen. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Pesquisa Florestal Brasileira, Colombo, v. 37, n. 92, p. 421-428, out./dez. 2017. |
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DOI: |
10.4336/2017.pfb.37.92.1145 |
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Idioma: |
Inglês |
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Conteúdo: |
Resumo - Objetivou-se neste trabalho avaliar os efeitos de dois crioprotetores e métodos de descongelamento sobre o potencial fisiológico de sementes de Genipa americana L. Foram realizados dois experimentos, um para cada crioprotetor, sendo testados 12 tratamentos para cada um, ambos em esquema fatorial 6 x 2 (concentrações de crioprotetor x modos de descongelamento). As concentrações de dimetilsulfóxido foram: 0, 5, 10, 15, 20 e 25% e as de sacarose: 0, 0,25, 0,5, 0,75, 1,0 e 1,25 M. Os modos de descongelamento foram o rápido (38 °C em 30 min) e o lento (25 °C em 4 h). As sementes foram imersas por 3 h em solução crioprotetora e em seguida armazenadas por 120 h, sendo posteriormente descongeladas. Em seguida, foram semeadas em substrato (areia + vermiculita 1:1). Avaliou-se a porcentagem e o índice de velocidade de emergência, comprimento e massa de matéria fresca e seca de plântulas. O dimetilsulfóxido e a sacarose podem ser utilizados como crioprotetor em sementes de G. americana. O descongelamento deve ser lento para as sementes tratadas com dimetilsulfóxido. |
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Palavras-Chave: |
Conservação de germoplasma. |
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Thesagro: |
Genipa Americana. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/170812/1/1145-16843-1-PB.pdf
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Marc: |
LEADER 01785naa a2200205 a 4500
001 2084977
005 2018-01-10
008 2017 bl uuuu u00u1 u #d
024 7 $a10.4336/2017.pfb.37.92.1145$2DOI
100 1 $aPAIVA SOBRINHO, S. de
245 $aTolerance of jenipapo seeds to cryoprotectants and thawing after immersion in liquid nitrogen.$h[electronic resource]
260 $c2017
520 $aResumo - Objetivou-se neste trabalho avaliar os efeitos de dois crioprotetores e métodos de descongelamento sobre o potencial fisiológico de sementes de Genipa americana L. Foram realizados dois experimentos, um para cada crioprotetor, sendo testados 12 tratamentos para cada um, ambos em esquema fatorial 6 x 2 (concentrações de crioprotetor x modos de descongelamento). As concentrações de dimetilsulfóxido foram: 0, 5, 10, 15, 20 e 25% e as de sacarose: 0, 0,25, 0,5, 0,75, 1,0 e 1,25 M. Os modos de descongelamento foram o rápido (38 °C em 30 min) e o lento (25 °C em 4 h). As sementes foram imersas por 3 h em solução crioprotetora e em seguida armazenadas por 120 h, sendo posteriormente descongeladas. Em seguida, foram semeadas em substrato (areia + vermiculita 1:1). Avaliou-se a porcentagem e o índice de velocidade de emergência, comprimento e massa de matéria fresca e seca de plântulas. O dimetilsulfóxido e a sacarose podem ser utilizados como crioprotetor em sementes de G. americana. O descongelamento deve ser lento para as sementes tratadas com dimetilsulfóxido.
650 $aGenipa Americana
653 $aConservação de germoplasma
700 1 $aALBUQUERQUE, M. C. F. de
700 1 $aLUZ, P. B. da
700 1 $aNEVES, L. G.
700 1 $aCAMILI, E. C.
773 $tPesquisa Florestal Brasileira, Colombo$gv. 37, n. 92, p. 421-428, out./dez. 2017.
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