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| Registros recuperados : 8 | |
| 7. |  | FREITAS, J. F. de.; LIMA, M. M. de.; SILVA, M. de O.; RIBEIRO, M. L.; DIAS, R. Q.; PAOLI, T. M. P. de.; BERSANI, T. Agricultura familiar : orientações para formalizaçao fiscal, ambiental e sanitária. Vitória, ES : ADERES, [20--]. 63 p.| Biblioteca(s): Biblioteca Rui Tendinha. |
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| Registros recuperados : 8 | |
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Registro Completo |
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Biblioteca(s): |
Biblioteca Rui Tendinha. |
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Data corrente: |
29/07/2024 |
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Data da última atualização: |
29/07/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, A. N. R.; ROCHA, R. B.; TEIXEIRA, A. L.; ESPÃNDULA, M. C.; PARTELLI, F. L.; CAIXETA, E. T. |
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Afiliação: |
Adriele Nunes Rodrigues Silva, Universidade Federal de Rondônia; Rodrigo Barros Rocha, EMBRAPA Café; Alexsandro Lara Teixeira, Incaper; Marcelo Curitiba Espindula, Incaper; Fábio Luiz Partelli, CEUNES; Eveline Teixeira Caixeta, EMBRAPA Café/UFV. |
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Título: |
Self-incompatibility and pollination efficiency in Coffea canephora using fluorescence microscopy. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Agronomy, v. 14, n. 7., p. 1-14, 2024. |
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Idioma: |
Português |
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Conteúdo: |
In nature, the ability to avoid self-fertilization has evolved to prevent the deleterious effects of inbreeding. However, under cultivation conditions, self-incompatibility can reduce the pollination efficiency of Coffea canephora. The objective of this study was to characterize the self-incompatibilityexpression of the most cultivated genotypes inWestern Amazonia, to improve the management of this coffee plant. In vitro pollinations were conducted among 45 genotypes, and the development of pollen tubes was evaluated using fluorescence microscopy. Pollination efficiency was evaluated considering the allelic variability within a breeding population from an ideal condition of maximum genetic variability. Based on the compatibility response, the genotypes were organized into six groups: group I (24.4%), group II (31.1%), group III (24.4%), group IV (2.2%), group V (2.2%), and group VI (15.6%). The lower frequencies of groups IV, V, and VI were associated with the lower frequency of the rarest allelic forms in this breeding population (p = 0.36, q = 0.26, r = 0.29, and s = 0.10). The correspondence between allelic and genotypic frequencies indicates that this population is in Hardy?Weinberg equilibrium (HWE) for this trait. Considering the cultivation of 2 to 10 clones, the population studied showed intermediate pollination efficiency between an ideal HWE population with p = q = r = s = 0.25 and a population with the rarest allelic forms (p = 0.48, q = 0.32, r = 0.19, s = 0.01). Efficiency
estimates were stabilized from the cultivation of five clones, indicating that cultivating a minimum number of clones should be considered. Theoretically, maximum pollination efficiency is achieved by representing all alleles in equal proportions, whereas in practice, farmers should ensure the cultivation of plants from different compatibility groups, without significant imbalances. MenosIn nature, the ability to avoid self-fertilization has evolved to prevent the deleterious effects of inbreeding. However, under cultivation conditions, self-incompatibility can reduce the pollination efficiency of Coffea canephora. The objective of this study was to characterize the self-incompatibilityexpression of the most cultivated genotypes inWestern Amazonia, to improve the management of this coffee plant. In vitro pollinations were conducted among 45 genotypes, and the development of pollen tubes was evaluated using fluorescence microscopy. Pollination efficiency was evaluated considering the allelic variability within a breeding population from an ideal condition of maximum genetic variability. Based on the compatibility response, the genotypes were organized into six groups: group I (24.4%), group II (31.1%), group III (24.4%), group IV (2.2%), group V (2.2%), and group VI (15.6%). The lower frequencies of groups IV, V, and VI were associated with the lower frequency of the rarest allelic forms in this breeding population (p = 0.36, q = 0.26, r = 0.29, and s = 0.10). The correspondence between allelic and genotypic frequencies indicates that this population is in Hardy?Weinberg equilibrium (HWE) for this trait. Considering the cultivation of 2 to 10 clones, the population studied showed intermediate pollination efficiency between an ideal HWE population with p = q = r = s = 0.25 and a population with the rarest allelic forms (p = 0.48, q = 0.32, r = 0.19, s = 0.01).... Mostrar Tudo |
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Palavras-Chave: |
Cafe conilon. |
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Thesagro: |
Cafeicultura; Coffea Canephora. |
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Categoria do assunto: |
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URL: |
https://biblioteca.incaper.es.gov.br/digital/bitstream/item/4720/1/cafeconilon.pdf
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Marc: |
LEADER 02530naa a2200217 a 4500
001 1025800
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008 2024 bl uuuu u00u1 u #d
100 1 $aSILVA, A. N. R.
245 $aSelf-incompatibility and pollination efficiency in Coffea canephora using fluorescence microscopy.$h[electronic resource]
260 $c2024
520 $aIn nature, the ability to avoid self-fertilization has evolved to prevent the deleterious effects of inbreeding. However, under cultivation conditions, self-incompatibility can reduce the pollination efficiency of Coffea canephora. The objective of this study was to characterize the self-incompatibilityexpression of the most cultivated genotypes inWestern Amazonia, to improve the management of this coffee plant. In vitro pollinations were conducted among 45 genotypes, and the development of pollen tubes was evaluated using fluorescence microscopy. Pollination efficiency was evaluated considering the allelic variability within a breeding population from an ideal condition of maximum genetic variability. Based on the compatibility response, the genotypes were organized into six groups: group I (24.4%), group II (31.1%), group III (24.4%), group IV (2.2%), group V (2.2%), and group VI (15.6%). The lower frequencies of groups IV, V, and VI were associated with the lower frequency of the rarest allelic forms in this breeding population (p = 0.36, q = 0.26, r = 0.29, and s = 0.10). The correspondence between allelic and genotypic frequencies indicates that this population is in Hardy?Weinberg equilibrium (HWE) for this trait. Considering the cultivation of 2 to 10 clones, the population studied showed intermediate pollination efficiency between an ideal HWE population with p = q = r = s = 0.25 and a population with the rarest allelic forms (p = 0.48, q = 0.32, r = 0.19, s = 0.01). Efficiency estimates were stabilized from the cultivation of five clones, indicating that cultivating a minimum number of clones should be considered. Theoretically, maximum pollination efficiency is achieved by representing all alleles in equal proportions, whereas in practice, farmers should ensure the cultivation of plants from different compatibility groups, without significant imbalances.
650 $aCafeicultura
650 $aCoffea Canephora
653 $aCafe conilon
700 1 $aROCHA, R. B.
700 1 $aTEIXEIRA, A. L.
700 1 $aESPÍNDULA, M. C.
700 1 $aPARTELLI, F. L.
700 1 $aCAIXETA, E. T.
773 $tAgronomy$gv. 14, n. 7., p. 1-14, 2024.
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