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Registro Completo |
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
12/05/2020 |
Data da última atualização: |
15/07/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SOUZA, S.; ALVES, A. A. C.; OLIVEIRA, E. J. de. |
Afiliação: |
LEONARDO SILVA SOUZA, UFRB; ALFREDO AUGUSTO CUNHA ALVES, CNPMF; EDER JORGE DE OLIVEIRA, CNPMF. |
Título: |
Phenological diversity of flowering and fruiting in cassava germplasm. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Scientia Horticulturae, v. 265, e109253, 2020. |
Idioma: |
Inglês |
Conteúdo: |
Genetic and environmental factors can influence the flowering and fruit setting performance of cassava varieties. The objective of this work was to assess the genetic variability of cassava germplasm for flowering and fruiting traits, as well as to cluster the genotypes based on based on its flowering performance. A total of 1032 accessions were evaluated monthly from 3 to 12 months after planting – MAP for flower and fruit production using a grade scale ranging from 0 absence or poor flowering to 3 full flowering, and the accumulated degree-days ADD was recorded for each period. The following traits were analyzed: a the mean flowering score MFS from 3 to 12 MAP and b a weighted average of the flowering scores that emphasizes early flowering WAS. The cassava accessions were clustered based on principal component analysis PCA. Seven clusters were identified via PCA, with very contrasting traits including a early flowering 8.5 % of the accessions, Group 4); b) consistent flowering after 2036 ADD (0.6 % of the accessions, Group 2); and c) accessions that do not flower (54 % of the accessions, Group 7). For most of the cassava germplasm, flowering occurred during the longest photoperiod (5–6 MAP). This study demonstrated that accessions belonging to Group 2 are very interesting for breeding programs and genomic studies due to their high flowering throughout the year. This is the first report of phenological diversity of flowering and fruiting performance in cassava germplasm. |
Thesagro: |
Mandioca. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01951naa a2200157 a 4500 001 2122239 005 2020-07-15 008 2020 bl uuuu u00u1 u #d 100 1 $aSOUZA, S. 245 $aPhenological diversity of flowering and fruiting in cassava germplasm.$h[electronic resource] 260 $c2020 520 $aGenetic and environmental factors can influence the flowering and fruit setting performance of cassava varieties. The objective of this work was to assess the genetic variability of cassava germplasm for flowering and fruiting traits, as well as to cluster the genotypes based on based on its flowering performance. A total of 1032 accessions were evaluated monthly from 3 to 12 months after planting – MAP for flower and fruit production using a grade scale ranging from 0 absence or poor flowering to 3 full flowering, and the accumulated degree-days ADD was recorded for each period. The following traits were analyzed: a the mean flowering score MFS from 3 to 12 MAP and b a weighted average of the flowering scores that emphasizes early flowering WAS. The cassava accessions were clustered based on principal component analysis PCA. Seven clusters were identified via PCA, with very contrasting traits including a early flowering 8.5 % of the accessions, Group 4); b) consistent flowering after 2036 ADD (0.6 % of the accessions, Group 2); and c) accessions that do not flower (54 % of the accessions, Group 7). For most of the cassava germplasm, flowering occurred during the longest photoperiod (5–6 MAP). This study demonstrated that accessions belonging to Group 2 are very interesting for breeding programs and genomic studies due to their high flowering throughout the year. This is the first report of phenological diversity of flowering and fruiting performance in cassava germplasm. 650 $aMandioca 700 1 $aALVES, A. A. C. 700 1 $aOLIVEIRA, E. J. de 773 $tScientia Horticulturae$gv. 265, e109253, 2020.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
07/07/1999 |
Data da última atualização: |
04/12/2023 |
Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
Autoria: |
MEDEIROS, A. C. de S.; ZANON, A. |
Título: |
Substratos e temperaturas para teste de germinação de sementes de aroeira-vermelha (Schinus terebinthifolius Raddi). |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
Colombo: EMBRAPA-CNPF, 1999. |
Páginas: |
3 p. |
Série: |
(EMBRAPA-CNPF. Comunicado técnico, 32). |
ISSN: |
0104-5911 |
Idioma: |
Português |
Palavras-Chave: |
Propagação; Substrate; Substrato. |
Thesagro: |
Aroeira; Espécie nativa; Germinação; Schinus Terebinthifolius; Semente; Temperatura. |
Thesaurus NAL: |
germination; seeds; temperature. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPF-2009-09/16622/1/com_tec32.pdf
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Marc: |
LEADER 00806nam a2200289 a 4500 001 1290879 005 2023-12-04 008 1999 bl uuuu u0uu1 u #d 022 $a0104-5911 100 1 $aMEDEIROS, A. C. de S. 245 $aSubstratos e temperaturas para teste de germinação de sementes de aroeira-vermelha (Schinus terebinthifolius Raddi). 260 $aColombo: EMBRAPA-CNPF$c1999 300 $a3 p. 490 $a(EMBRAPA-CNPF. Comunicado técnico, 32). 650 $agermination 650 $aseeds 650 $atemperature 650 $aAroeira 650 $aEspécie nativa 650 $aGerminação 650 $aSchinus Terebinthifolius 650 $aSemente 650 $aTemperatura 653 $aPropagação 653 $aSubstrate 653 $aSubstrato 700 1 $aZANON, A.
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