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Registro Completo |
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
17/09/2014 |
Data da última atualização: |
26/05/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
OLIVEIRA, E. J. de; F. A. SANTANA; OLIVEIRA, L. A. de; SANTOS, V. da S. |
Afiliação: |
EDER JORGE DE OLIVEIRA, CNPMF; SANTANA F. A., UFRB; LUCIANA ALVES DE OLIVEIRA, CNPMF; VANDERLEI DA SILVA SANTOS, CNPMF. |
Título: |
Genetic parameters and prediction of genotypic values for root quality traits in cassava using REML/BLUP. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Genetics and Molecular Research, v. 13, n. 3, p. 6683-6700, August, 2014. |
ISSN: |
1676-5680 |
DOI: |
10.4238/2014 |
Idioma: |
Inglês |
Conteúdo: |
The aim of this study was to estimate the genetic parameters and predict the genotypic values of root quality traits in cassava (Manihot esculenta Crantz) using restricted maximum likelihood (REML) and best linear unbiased prediction (BLUP). A total of 471 cassava accessions were evaluated over two years of cultivation. The evaluated traits included amylose content (AML), root dry matter (DMC), cyanogenic compounds (CyC), and starch yield (StYi). Estimates of the individual broad-sense heritability of AML were low (hg(2) = 0.07 ± 0.02), medium for StYi and DMC, and high for CyC. The heritability of AML was substantially improved based on mean of accessions (hm(2) = 0.28), indicating that some strategies such as increasing the number of repetitions can be used to increase the selective efficiency. In general, the observed genotypic values were very close to the predicted average of the improved population, most likely due to the high accuracy (>0.90), especially for DMC, CyC, and StYi. Gains via selection of the 30 best genotypes for each trait were 4.8 and 3.2% for an increase and decrease for AML, respectively, an increase of 10.75 and 74.62% for DMC for StYi, respectively, and a decrease of 89.60% for CyC in relation to the overall mean of the genotypic values. Genotypic correlations between the quality traits of the cassava roots collected were generally favorable, although they were low in magnitude. The REML/BLUP method was adequate for estimating genetic parameters and predicting the genotypic values, making it useful for cassava breeding. MenosThe aim of this study was to estimate the genetic parameters and predict the genotypic values of root quality traits in cassava (Manihot esculenta Crantz) using restricted maximum likelihood (REML) and best linear unbiased prediction (BLUP). A total of 471 cassava accessions were evaluated over two years of cultivation. The evaluated traits included amylose content (AML), root dry matter (DMC), cyanogenic compounds (CyC), and starch yield (StYi). Estimates of the individual broad-sense heritability of AML were low (hg(2) = 0.07 ± 0.02), medium for StYi and DMC, and high for CyC. The heritability of AML was substantially improved based on mean of accessions (hm(2) = 0.28), indicating that some strategies such as increasing the number of repetitions can be used to increase the selective efficiency. In general, the observed genotypic values were very close to the predicted average of the improved population, most likely due to the high accuracy (>0.90), especially for DMC, CyC, and StYi. Gains via selection of the 30 best genotypes for each trait were 4.8 and 3.2% for an increase and decrease for AML, respectively, an increase of 10.75 and 74.62% for DMC for StYi, respectively, and a decrease of 89.60% for CyC in relation to the overall mean of the genotypic values. Genotypic correlations between the quality traits of the cassava roots collected were generally favorable, although they were low in magnitude. The REML/BLUP method was adequate for estimating genetic parameters and... Mostrar Tudo |
Thesagro: |
Mandioca; Melhoramento vegetal. |
Thesaurus Nal: |
Breeding; Cassava; Genetic improvement. |
Categoria do assunto: |
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Marc: |
LEADER 02309naa a2200241 a 4500 001 1995215 005 2023-05-26 008 2014 bl uuuu u00u1 u #d 022 $a1676-5680 024 7 $a10.4238/2014$2DOI 100 1 $aOLIVEIRA, E. J. de 245 $aGenetic parameters and prediction of genotypic values for root quality traits in cassava using REML/BLUP.$h[electronic resource] 260 $c2014 520 $aThe aim of this study was to estimate the genetic parameters and predict the genotypic values of root quality traits in cassava (Manihot esculenta Crantz) using restricted maximum likelihood (REML) and best linear unbiased prediction (BLUP). A total of 471 cassava accessions were evaluated over two years of cultivation. The evaluated traits included amylose content (AML), root dry matter (DMC), cyanogenic compounds (CyC), and starch yield (StYi). Estimates of the individual broad-sense heritability of AML were low (hg(2) = 0.07 ± 0.02), medium for StYi and DMC, and high for CyC. The heritability of AML was substantially improved based on mean of accessions (hm(2) = 0.28), indicating that some strategies such as increasing the number of repetitions can be used to increase the selective efficiency. In general, the observed genotypic values were very close to the predicted average of the improved population, most likely due to the high accuracy (>0.90), especially for DMC, CyC, and StYi. Gains via selection of the 30 best genotypes for each trait were 4.8 and 3.2% for an increase and decrease for AML, respectively, an increase of 10.75 and 74.62% for DMC for StYi, respectively, and a decrease of 89.60% for CyC in relation to the overall mean of the genotypic values. Genotypic correlations between the quality traits of the cassava roots collected were generally favorable, although they were low in magnitude. The REML/BLUP method was adequate for estimating genetic parameters and predicting the genotypic values, making it useful for cassava breeding. 650 $aBreeding 650 $aCassava 650 $aGenetic improvement 650 $aMandioca 650 $aMelhoramento vegetal 700 1 $aF. A. SANTANA 700 1 $aOLIVEIRA, L. A. de 700 1 $aSANTOS, V. da S. 773 $tGenetics and Molecular Research$gv. 13, n. 3, p. 6683-6700, August, 2014.
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1. | | GRANDO, T. H.; SÁ, M. F. de; BALDISSERA, M. D.; OLIVEIRA, C. B.; SOUZA, M. E. de; RAFFIN, R. P.; SANTOS, R. C. V.; DOMINGUES, R.; MINHO, A. P.; LEAL, M. L. R.; MONTEIRO, S. G. In vitro activity of essential oils of free and nanostructured Melaleuca alternifolia and of terpinen-4-ol on eggs and larvae of Haemonchus contortus. Journal of Helminthology, v. 90, n. 3, p. 377-382, May 2016.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
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