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| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.contributor.author | SANTOS, I. R. I. | pt_BR |
| dc.contributor.author | SALOMAO, A. N. | pt_BR |
| dc.date.accessioned | 2019-12-13T19:43:04Z | - |
| dc.date.available | 2019-12-13T19:43:04Z | - |
| dc.date.created | 2019-12-13 | |
| dc.date.issued | 2019 | |
| dc.identifier.citation | Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2019. | pt_BR |
| dc.identifier.uri | http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1116845 | - |
| dc.description | Germination of Ipomoea cynanchifolia seeds after storage at different temperatures and scarification. Abstract ? Ipomoea cynanchifolia Meisn., Convolvulaceae, is a wild relative of Ipomoea batatas (L.) Lam. (sweet potato). In this study, seeds with 7.8% water content were stored in a germinator (25 °C), a freezer (-18 °C) and in liquid nitrogen (-196 °C) for seven days. After storage, seeds underwent a decontamination treatment for 15 min, followed by three rinses with sterile distilled water, and after that seeds were scarified, by means of a cut in the opposite pole to the hilum made with nail pliers. Non-scarified (control, ESC-) and scarified (ESC +) seeds were sown in Petri dishes between filter paper discs soaked with water equivalent to three times the mass of the discs, and taken to a growth room at 25 ± 2 °C, with a 12h photoperiod. Observations occurred daily and counts occurred at 3, 7, 15 and 30 days after sowing using botanic (radicle protrusion) or technological (formation of a normal seedling with a green hypocotyl, cotyledons and root) criteria. Regardless of the storage temperature, germination percentages of ESC- seeds were low, with highest percentage of germination (15%) for seeds stored at -196 °C. In contrast, germination percentages for ESC+ seeds were high, ranging from 97% to 100%. These results show the occurrence of dormancy in I. cynanchifolia seeds, the need for scarification to promote seed germination and seed tolerance to storage at temperatures below freezing. | pt_BR |
| dc.language.iso | por | pt_BR |
| dc.relation.ispartofseries | (Embrapa Recursos Genéticos e Biotecnologia / Boletim de Pesquisa e Desenvolvimento, 354) | pt_BR |
| dc.rights | openAccess | pt_BR |
| dc.subject | Escarificação | pt_BR |
| dc.title | Germinação de sementes de Ipomoea cynanchifolia após armazenamento em diferentes temperaturas e escarificação. | pt_BR |
| dc.type | Folhetos | pt_BR |
| dc.date.updated | 2019-12-13T19:43:04Z | |
| dc.subject.thesagro | Criopreservação | pt_BR |
| dc.subject.thesagro | Dormência | pt_BR |
| dc.subject.nalthesaurus | Cryopreservation | pt_BR |
| dc.format.extent2 | 21 p. | pt_BR |
| riaa.ainfo.id | 1116845 | pt_BR |
| riaa.ainfo.lastupdate | 2019-12-13 | |
| dc.contributor.institution | IZULME RITA IMACULADA SANTOS, Cenargen; ANTONIETA NASSIF SALOMAO, Cenargen. | pt_BR |
| Aparece en las colecciones: | Boletim de Pesquisa e Desenvolvimento (CENARGEN)  | |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| BoletimGerminacaodesementes3543.pdf | 1.04 MB | Adobe PDF |  Visualizar/Abrir |
