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Registros recuperados : 674 | |
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Registro Completo
Biblioteca(s): |
Embrapa Pecuária Sudeste; Embrapa Recursos Genéticos e Biotecnologia. |
Data corrente: |
23/11/2015 |
Data da última atualização: |
15/03/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
FAVERO, A. P.; SANTOS, R. F. dos; SIMPSON, C. E.; VALLS, J. F. M.; VELLO, N. A. |
Afiliação: |
ALESSANDRA PEREIRA FAVERO, CPPSE; RODRIGO FURTADO DOS SANTOS, CNPAE; CHARLES E. SIMPSON, TEXAS AGRILIFE RESEARCH -TEXAS A&M UNIVERSITY/STEPHENVILLE; JOSE FRANCISCO MONTENEGRO VALLS, CENARGEN; NATAL ANTONIO VELLO, ESALQ/PIRACICABA. |
Título: |
Successful crosses between fungal-resistant wild species of Arachis (section Arachis) and Arachis hypogaea. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Genetics and Molecular Biology, v. 38, n. 3, p. 353-365, sep. 2015. |
DOI: |
10.1590/S1415-475738320140376 |
Idioma: |
Inglês Português |
Conteúdo: |
Peanut (Arachis hypogaea) is the fifth most produced oil crop worldwide. Besides lack of water, fungal diseases are the most limiting factors for the crop. Several species of Arachis are resistant to certain pests and diseases. This study aimed to successfully cross the A-genome with B-K-A genome wild species previously selected for fungal disease resistance, but that are still untested. We also aimed to polyplodize the amphihaploid chromosomes; cross the synthetic amphidiploids and A. hypogaea to introgress disease resistance genes into the cultivated peanut; and analyze pollen viability and morphological descriptors for all progenies and their parents. We selected 12 A-genome accessions as male parents and three B-genome species, one K-genome species, and one A-genome species as female parents. Of the 26 distinct cross combinations, 13 different interspecific AB-genome and three AA-genome hybrids were obtained. These sterile hybrids were polyploidized and five combinations produced tetraploid flowers. Next, 16 combinations were crossed between A. hypogaea and the synthetic amphidiploids, resulting in 11 different hybrid combinations. Our results confirm that it is possible to introgress resistance genes from wild species into the peanut using artificial hybridization, and that more species than previously reported can be used, thus enhancing the genetic variability in peanut genetic improvement programs. |
Palavras-Chave: |
Interspecific hybrids; Peanut; Pollen viability; Polyploidization. |
Thesaurus NAL: |
colchicine. |
Categoria do assunto: |
-- G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/133604/1/alessamdrafavero.pdf
|
Marc: |
LEADER 02181naa a2200241 a 4500 001 2029193 005 2023-03-15 008 2015 bl uuuu u00u1 u #d 024 7 $a10.1590/S1415-475738320140376$2DOI 100 1 $aFAVERO, A. P. 245 $aSuccessful crosses between fungal-resistant wild species of Arachis (section Arachis) and Arachis hypogaea.$h[electronic resource] 260 $c2015 520 $aPeanut (Arachis hypogaea) is the fifth most produced oil crop worldwide. Besides lack of water, fungal diseases are the most limiting factors for the crop. Several species of Arachis are resistant to certain pests and diseases. This study aimed to successfully cross the A-genome with B-K-A genome wild species previously selected for fungal disease resistance, but that are still untested. We also aimed to polyplodize the amphihaploid chromosomes; cross the synthetic amphidiploids and A. hypogaea to introgress disease resistance genes into the cultivated peanut; and analyze pollen viability and morphological descriptors for all progenies and their parents. We selected 12 A-genome accessions as male parents and three B-genome species, one K-genome species, and one A-genome species as female parents. Of the 26 distinct cross combinations, 13 different interspecific AB-genome and three AA-genome hybrids were obtained. These sterile hybrids were polyploidized and five combinations produced tetraploid flowers. Next, 16 combinations were crossed between A. hypogaea and the synthetic amphidiploids, resulting in 11 different hybrid combinations. Our results confirm that it is possible to introgress resistance genes from wild species into the peanut using artificial hybridization, and that more species than previously reported can be used, thus enhancing the genetic variability in peanut genetic improvement programs. 650 $acolchicine 653 $aInterspecific hybrids 653 $aPeanut 653 $aPollen viability 653 $aPolyploidization 700 1 $aSANTOS, R. F. dos 700 1 $aSIMPSON, C. E. 700 1 $aVALLS, J. F. M. 700 1 $aVELLO, N. A. 773 $tGenetics and Molecular Biology$gv. 38, n. 3, p. 353-365, sep. 2015.
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