Data/hora: 05/06/2024 01:17:53

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Clima Temperado; Embrapa Milho e Sorgo; Embrapa Recursos Genéticos e Biotecnologia.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 2
Data corrente: | 29/03/2021
Data da última atualização: | 01/04/2021
Autoria: | MEDEIROS, M. B. de; VALLS, J. F. M.; ABREU, A. G. de; HEIDEN, G.; RIBEIRO-SILVA, S.; JOSE, S. C. B. R.; SANTOS, I. R. I.; PASSOS, A. M. A. dos; BURLE, M. L.
Afiliação: | MARCELO BRILHANTE DE MEDEIROS, Cenargen; JOSE FRANCISCO MONTENEGRO VALLS, Cenargen; ALUANA GONCALVES DE ABREU, CNPAF; GUSTAVO HEIDEN, CPACT; SUELMA RIBEIRO-SILVA, Instituto Chico Mendes de Conservação da Biodiversidade; SOLANGE CARVALHO B ROVERI JOSE, Cenargen; IZULME RITA IMACULADA SANTOS, Cenargen; ALEXANDRE MARTINS ABDAO DOS PASSOS, CNPMS; MARILIA LOBO BURLE, Cenargen.
Título: | Status of the ex situ and in situ conservation of brazilian crop wild relatives of rice, potato, sweet potato, and finger millet: filling the gaps of germplasm collections.
Ano de publicação: | 2021
Fonte/Imprenta: | Agronomy, v. 11, article 638, 2021.
ISSN: | 2073-4395
DOI: | https://doi.org/10.3390/agronomy11040638
Idioma: | Inglês
Conteúdo: | This study presents the status of ex situ and in situ conservation for the crop wild relatives of rice, potato, sweet potato, and finger millet in Brazil, and the subsequent germplasm collection expeditions. This research is part of a global initiative entitled "Adapting Agriculture to Climate Change: Collecting, Protecting, and Preparing Crop Wild Relatives" supported by the Global Crop Diversity Trust. Species of the primary, secondary, and tertiary gene pools with occurrences reported in Brazil were included: Oryza alta Swallen, O. grandiglumis (Döll) Prod., O. latifolia Desv., O. glumaepatula Steud., Eleusine tristachya (Lam.) Lam., E. indica (L.) Gaertn., Solanum commersonii Dunal, S. chacoense Bitter, Ipomoea grandifolia (Dammer) O?Donell, I. ramosissima (Poir.) Choisy, I. tiliacea (Willd.) Choisy, I. triloba L., and I. cynanchifolia Meisn. The status of the ex situ and in situ conservation of each taxon was assessed using the gap analysis methodology, and the results were used to plan 16 germplasm collection expeditions. Seeds of the collected material were evaluated for viability, and the protocols for seed germination and cryopreservation were tested. The final conservation score, resulting from the gap analysis and including the average of the ex situ and in situ scores, resulted in a classification of medium priority of conservation for all the species, with the exception of I. grandifolia (high priority). The total accessions collected (174) almost doubled the total accessions of these crop wild relatives incorporated in Embrapa's ex situ conservation system prior to 2015. In addition, accessions for practically absent species were collected for the ex situ conservation system, such as Ipomoea species, Eleusine indica, and Solanum chacoense. The methods used for dormancy breaking and low temperature conservation for the Oryza, Eleusine, and Ipomoea species were promising for the incorporation of accessions in the respective gene banks. The results show the importance of efforts to collect and conserve ex situ crop wild relatives in Brazil based on previous gap analysis. The complementarity with the in situ strategy also appears to be very promising in the country.
Palavras-Chave: | Banco de genes; Conservação ex situ; Conservação in situ; Crop wild relatives; Gap analysis.
Thesagro: | Arroz; Banco de Germoplasma; Batata; Batata Doce; Genética Vegetal; Germoplasma; Milheto; Oryza Sativa; Variedade.
Thesaurus Nal: | Ex situ conservation; Gene banks; Germplasm; In situ conservation; Potatoes; Rice; Sweet potatoes.

Categoria do assunto:

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G Melhoramento Genético

URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/222370/1/agronomy-11-00638-v2.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)

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CNPMS - (29505-1) - UPC - AP - DD -  -  -  - DIS
CNPAF - (36011-1) - UPC - AP - DD - 2021 -  - 2021 - DIS
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CPACT - (21911-1) - UPC - AP - DD -  -  -  - DIS