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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
02/12/2021 |
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Data da última atualização: |
02/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUSA, M. B. e; ANDRADE, L. R. B. de; SOUZA, E. H. de; ALVES, A. A. C.; OLIVEIRA, E. J. de. |
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Afiliação: |
MASSAINE BANDEIRA E SOUSA; LUCIANO ROGERIO BRAATZ DE ANDRADE; EVERTON HILO DE SOUZA, UFRB; ALFREDO AUGUSTO CUNHA ALVES, CNPMF; EDER JORGE DE OLIVEIRA, CNPMF. |
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Título: |
Reproductive barriers in cassava: factors and implications for genetic improvement. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Plos One, November, 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
Cassava breeding is hampered by high flower abortion rates that prevent efficient recombination among promising clones. To better understand the factors causing flower abortion and propose strategies to overcome them, we 1) analyzed the reproductive barriers to intraspecific crossing, 2) evaluated pollen-pistil interactions to maximize hand pollination efficiency, and 3) identified the population structure of elite parental clones. From 2016 to 2018, the abortion and fertilization rates of 5,748 hand crossings involving 91 parents and 157 progenies were estimated. We used 16,300 single nucleotide polymorphism markers to study the parents' population structure via discriminant analysis of principal components, and three clusters were identified. To test for male and female effects, we used a mixed model in which the environment (month and year) was fixed, while female and male (nested to female) were random effects. Regardless of the population structure, significant parental effects were identified for abortion and fertilization rates, suggesting the existence of reproductive barriers among certain cassava clones. Matching ability between cassava parents was significant for pollen grains that adhered to the stigma surface, germinated pollen grains, and the number of fertilized ovules. Non-additive genetic effects were important to the inheritance of these traits. Pollen viability and pollen-pistil interactions in cross- and self-pollination were also investigated to characterize pollen-stigma compatibility. Various events related to pollen tube growth dynamics indicated fertilization abnormalities. These abnormalities included the reticulated deposition of callose in the pollen tube, pollen tube growth cessation in a specific region of the stylet, and low pollen grain germination rate. Generally, pollen viability and stigma receptivity varied depending on the clone and flowering stage and were lost during flowering. This study provides novel insights into cassava reproduction that can assist in practical crossing and maximize the recombination of contrasting clones. MenosCassava breeding is hampered by high flower abortion rates that prevent efficient recombination among promising clones. To better understand the factors causing flower abortion and propose strategies to overcome them, we 1) analyzed the reproductive barriers to intraspecific crossing, 2) evaluated pollen-pistil interactions to maximize hand pollination efficiency, and 3) identified the population structure of elite parental clones. From 2016 to 2018, the abortion and fertilization rates of 5,748 hand crossings involving 91 parents and 157 progenies were estimated. We used 16,300 single nucleotide polymorphism markers to study the parents' population structure via discriminant analysis of principal components, and three clusters were identified. To test for male and female effects, we used a mixed model in which the environment (month and year) was fixed, while female and male (nested to female) were random effects. Regardless of the population structure, significant parental effects were identified for abortion and fertilization rates, suggesting the existence of reproductive barriers among certain cassava clones. Matching ability between cassava parents was significant for pollen grains that adhered to the stigma surface, germinated pollen grains, and the number of fertilized ovules. Non-additive genetic effects were important to the inheritance of these traits. Pollen viability and pollen-pistil interactions in cross- and self-pollination were also investigated to characte... Mostrar Tudo |
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Thesagro: |
Mandioca. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/228421/1/Souza-et-al-PlosOne-2021-1.pdf
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Marc: |
LEADER 02619naa a2200181 a 4500
001 2137018
005 2021-12-02
008 2021 bl uuuu u00u1 u #d
100 1 $aSOUSA, M. B. e
245 $aReproductive barriers in cassava$bfactors and implications for genetic improvement.$h[electronic resource]
260 $c2021
520 $aCassava breeding is hampered by high flower abortion rates that prevent efficient recombination among promising clones. To better understand the factors causing flower abortion and propose strategies to overcome them, we 1) analyzed the reproductive barriers to intraspecific crossing, 2) evaluated pollen-pistil interactions to maximize hand pollination efficiency, and 3) identified the population structure of elite parental clones. From 2016 to 2018, the abortion and fertilization rates of 5,748 hand crossings involving 91 parents and 157 progenies were estimated. We used 16,300 single nucleotide polymorphism markers to study the parents' population structure via discriminant analysis of principal components, and three clusters were identified. To test for male and female effects, we used a mixed model in which the environment (month and year) was fixed, while female and male (nested to female) were random effects. Regardless of the population structure, significant parental effects were identified for abortion and fertilization rates, suggesting the existence of reproductive barriers among certain cassava clones. Matching ability between cassava parents was significant for pollen grains that adhered to the stigma surface, germinated pollen grains, and the number of fertilized ovules. Non-additive genetic effects were important to the inheritance of these traits. Pollen viability and pollen-pistil interactions in cross- and self-pollination were also investigated to characterize pollen-stigma compatibility. Various events related to pollen tube growth dynamics indicated fertilization abnormalities. These abnormalities included the reticulated deposition of callose in the pollen tube, pollen tube growth cessation in a specific region of the stylet, and low pollen grain germination rate. Generally, pollen viability and stigma receptivity varied depending on the clone and flowering stage and were lost during flowering. This study provides novel insights into cassava reproduction that can assist in practical crossing and maximize the recombination of contrasting clones.
650 $aMandioca
700 1 $aANDRADE, L. R. B. de
700 1 $aSOUZA, E. H. de
700 1 $aALVES, A. A. C.
700 1 $aOLIVEIRA, E. J. de
773 $tPlos One, November, 2021.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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| Registros recuperados : 38 | |
| 7. |  | SOUSA, M. B. e; SILVA, K. J. D. e; ROCHA, M. de M.; NEVES, A. C. das. Estimativas de parâmetros genéticos em linhagens de feijão-caupi nos municípios de Balsas, MA e Primavera do Leste, MT. In: CONGRESSO NACIONAL DE FEIJÃO-CAUPI, 3., 2013, Recife. Feijão-Caupi como alternativa sustentável para os sistemas produtivos familiares e empresariais. Recife: IPA, 2013. CONAC 2012. Disponível em: http://www.conac2012.org/resumos/pdf/132a.pdf. Acesso em: 22 jul. 2013.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 8. | | SILVA, E. M. da; DINIZ, R. P.; SOUSA, M. B. e; BRAATZ, L. R.; OLIVEIRA, E. J. de. Geração de clones superiores de mandioca em progênies F1, S1 e S2 In: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 13., 2019. Foco e valor : resumos. Cruz das Almas, BA: Embrapa Mandioca e Fruticultura,2019. 119 p. il.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 13. | | SOUSA, M. B. e; SILVA, K. J. D. e; ROCHA, M. de M.; MENEZES JUNIOR, J. A. de; LIMA, L. R. L. Adaptabilidade e estabilidade produtiva em linhagens elite de feijão-caupi de porte semiprostrado no Cerrado do Brasil. In: CONGRESSO NACIONAL DE FEIJÃO-CAUPI, 4., 2016, Sorriso. Feijão-caupi: avanços e desafios tecnológicos e de mercado: resumos. Brasília, DF: Embrapa, 2016. p. 133. Na publicação: Kaesel Jackson Damasceno-Silva.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 14. | | SOUSA, M. B. e; SILVA, K. J. D. e; ROCHA, M. de M.; MENEZES JUNIOR, J. A. de; LIMA, L. R. L. Adaptability and yield stability of cowpea elite lines of semi-prostrate growth habit in the cerrado biome. Revista Ciência Agronômica, v. 48, n. 5, Esp., p. 832-839, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 16. | | BISPO, V. R. de S.; SOUSA, M. B. e; SOUZA, G. D. de; CARVALHO, R. R. B. de; OLIVEIRA, L. A. de; OLIVEIRA, E. J. de. Classificação de genótipos de mandioca quanto à presença de compostos cianogênicos nas raízes via espectroscopia na região do visível (VIS) e infravermelho próximo (NIR). In: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 13., 2019. Foco e valor : resumos. Cruz das Almas, BA: Embrapa Mandioca e Fruticultura,2019. 119 p. il.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 17. | | PIRES, C. de J.; SOUSA, M. B. e; SOUSA, C. M. B. de; LIMA, L. R. L.; SILVA, K. J. D. e; ROCHA, M. de M. Diversidade genética de genótipos de feijão-caupi de Porte Semi-Prostrado. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 6., 2011, Búzios. Panorama atual e perspectivas do melhoramento de plantas no Brasil: [anais]. Búzios: SBMP, 2011. 4 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 18. | | SOUSA, M. B. e; PIRES, C. de J.; SILVA, J. D. L. da; CARVALHO, L. C. B.; SILVA, K. J. D. e; ROCHA, M. de M. Divergência genética em genótipos de feijão-caupi de porte semi-ereto e ereto. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 6., 2011, Búzios. Panorama atual e perspectivas do melhoramento de plantas no Brasil. [Búzios]: SBMP, 2011. 4 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 19. | | SOUSA, M. B. e; SILVA, K. J. D. e; ROCHA, M. de M.; MENEZES JUNIOR, J. A. de; LIMA, L. R. L. Metodologias para análise de adaptabilidade e estabilidade fenotípica de linhagens-elite de feijão-caupi. In: CONGRESSO NACIONAL DE FEIJÃO-CAUPI, 4., 2016, Sorriso. Feijão-caupi: avanços e desafios tecnológicos e de mercado: resumos. Brasília, DF: Embrapa, 2016. p. 180. Na publicação: KAESEL JACKSON DAMASCENO-SILVA| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| Registros recuperados : 38 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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