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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
07/11/2016 |
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Data da última atualização: |
15/07/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, M. A. C. dos; REGO, M. M. do; QUEIROZ, M. A. de; DANTAS, B. F.; OTONI, W. C. |
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Afiliação: |
MÁRCIA ADRIANA CARVALHO DOS SANTOS, UNIVERSIDADE FEDERAL DA PARAÍBA; MAILSON MONTEIRO DO REGO, UNIVERSIDADE FEDERAL DA PARAÍBA; MANOEL ABILIO DE QUEIROZ, UNIVERSIDADE DO ESTADO DA BAHIA; BARBARA FRANCA DANTAS, CPATSA; WAGNER CAMPOS OTONI, UNIVERSIDADE FEDERAL DE VIÇOSA. |
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Título: |
Synchronizing the in vitro germination of Psidium guineense Sw. seeds by means of osmotic priming. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Revista Árvore, v. 40, n. 4, p. 649-660, 2016. |
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DOI: |
10.1590/0100-67622016000400008 |
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Idioma: |
Inglês
Português |
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Conteúdo: |
The Brazilian guava (Psidium guineense Swartz) is seed-propagated and, being native to the Caatinga biome, may frequently have uneven germination.Thus, we aimed to evaluate the synchronization of the in vitro seed germination of three accessions of the Brazilian guava, using water, polyethyleneglycol (PEG 6000), and potassium nitrate (KNO3) at different potentials and times of osmotic priming. Seeds from three accessions of the Brazilian guava (Y85, Y93,and Y97) from the UNEB/BA Germplasm Active Bank were subjected to the following pretreatments: -0.6, -1.0, -1.4, and -1,8 MPa PEG 6000; 10 and 20% KNO3 for 24h; 10 and 20% KNO3for 48h; water for 24 and 48h; and non-primed seeds as the control. The experimental design was therefore a 10x3+1 factorial scheme. We assessed the germination percentage (G), mean germination time (MGT), germination speed (GS), and germination speed index (GSI). Data was subjected to analysis of variance followed by a means test (Duncan at 5% probability) and regression. There was interaction between the priming treatments and accessions for all evaluated features, except G. PEG 6000 decreased the MGT (from 6 to 8 days) and increased GS and GSI of seeds from all three accessions at potentials -1.0 to -1.5 MPa.Water-priming had a positive effect on MGT, GS, and GSI of accession Y85 seeds. KNO3 negatively affected germination of seeds from all three accessions. Thereby, we could synchronize seed germination of accessions Y85 and Y97 with PEG 6000. |
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Palavras-Chave: |
Acessos de araçá; Brazilian guava; Germinação in vitro; Guava; Planta nativa; Psidium guineense Swartz. |
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Thesagro: |
Araça; Caatinga; Germinação; Goiaba; Semente. |
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Thesaurus Nal: |
Germination; Psidium guineense; Seeds. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/153424/1/Barbara-1.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/149624/1/0100-6762-rarv-40-04-0649.pdf
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Marc: |
LEADER 02474naa a2200349 a 4500
001 2060998
005 2024-07-15
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1590/0100-67622016000400008$2DOI
100 1 $aSANTOS, M. A. C. dos
245 $aSynchronizing the in vitro germination of Psidium guineense Sw. seeds by means of osmotic priming.$h[electronic resource]
260 $c2016
520 $aThe Brazilian guava (Psidium guineense Swartz) is seed-propagated and, being native to the Caatinga biome, may frequently have uneven germination.Thus, we aimed to evaluate the synchronization of the in vitro seed germination of three accessions of the Brazilian guava, using water, polyethyleneglycol (PEG 6000), and potassium nitrate (KNO3) at different potentials and times of osmotic priming. Seeds from three accessions of the Brazilian guava (Y85, Y93,and Y97) from the UNEB/BA Germplasm Active Bank were subjected to the following pretreatments: -0.6, -1.0, -1.4, and -1,8 MPa PEG 6000; 10 and 20% KNO3 for 24h; 10 and 20% KNO3for 48h; water for 24 and 48h; and non-primed seeds as the control. The experimental design was therefore a 10x3+1 factorial scheme. We assessed the germination percentage (G), mean germination time (MGT), germination speed (GS), and germination speed index (GSI). Data was subjected to analysis of variance followed by a means test (Duncan at 5% probability) and regression. There was interaction between the priming treatments and accessions for all evaluated features, except G. PEG 6000 decreased the MGT (from 6 to 8 days) and increased GS and GSI of seeds from all three accessions at potentials -1.0 to -1.5 MPa.Water-priming had a positive effect on MGT, GS, and GSI of accession Y85 seeds. KNO3 negatively affected germination of seeds from all three accessions. Thereby, we could synchronize seed germination of accessions Y85 and Y97 with PEG 6000.
650 $aGermination
650 $aPsidium guineense
650 $aSeeds
650 $aAraça
650 $aCaatinga
650 $aGerminação
650 $aGoiaba
650 $aSemente
653 $aAcessos de araçá
653 $aBrazilian guava
653 $aGerminação in vitro
653 $aGuava
653 $aPlanta nativa
653 $aPsidium guineense Swartz
700 1 $aREGO, M. M. do
700 1 $aQUEIROZ, M. A. de
700 1 $aDANTAS, B. F.
700 1 $aOTONI, W. C.
773 $tRevista Árvore$gv. 40, n. 4, p. 649-660, 2016.
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Embrapa Semiárido (CPATSA) |
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