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Genetic parameters, path analysis and indirect selection of agronomic traits of cassava germplasm Anais da ABC (AABC)
DINIZ,RAFAEL P.; OLIVEIRA,EDER J. DE.
Abstract: This study aimed to estimate genetic parameters and correlations between morphological, agronomic and root quality traits of cassava plants, as well as to study cause and effect relationships through path analysis. A total of 814 genotypes were evaluated from 2011 to 2015. The joint analysis of the data was performed by the mixed models approach. The predicted genetic values of the genotypes were used to estimate the genetic correlations among as well the path analysis. The estimates of heritability of the genotype means ranged from 0.31 (commercial fresh root yield – CRY) to 0.62 (plant height - PLH). The highest genetic correlation coefficient estimates were observed for starch yield (STY) × total fresh root yield (FRY) (0.97). The results of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Manihot esculenta Crantz; Heritability; Correlation; Correlated response..
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500859
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Molecular marker assisted selection for increasing inbreeding in S1 populations of cassava Anais da ABC (AABC)
OLIVEIRA,PAULO HENRIQUE G.A. DE; BARBOSA,ANA CLAUDIA O.; DINIZ,RAFAEL P.; OLIVEIRA,EDER J. DE; FERREIRA,CLAUDIA F..
Abstract The objective of the present work was to use MAS in self-pollinated cassava populations for obtaining individuals with high inbreeding (f) aimed at rapid development of partial inbred lines. Three progenies (F0222, F1378 and F1662) were self-pollinated, generating a total of 233 S1 individuals. The progenies and the S1 individuals were evaluated in the seedlings and clonal evaluation trials (CETs). In the CET, plants were evaluated for the following traits: plant height (PH), root dry matter content (DMC), above ground yield (AGY), root (RY) and starch yield (SY). Twenty-seven microsatellites and five minisatellites were used to determine the level of inbreeding of the S1 individuals. Inbreeding (f) values varied from 0.15 to 0.89 within...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Partial inbred lines; Manihot esculenta Crantz; Microsatellites; Self-pollination.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703853
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Productive potential of cassava plants (Manihot esculenta Crantz) propagated by leaf buds Anais da ABC (AABC)
NEVES,REIZALUAMAR J.; DINIZ,RAFAEL P.; OLIVEIRA,EDER J. DE.
ABSTRACT New techniques of rapid multiplication of cassava (Manihot esculenta Crantz) have been developed, requiring technical support for large-scale use. This work main to evaluate the agronomic performance of plantlets obtained by leaf buds technique against stem cuttings in the field conditions. The work was conducted using the randomized block design in a factorial scheme with 3 varieties (BRS Kiriris, 98150-06, 9624-09) × 4 origins of the plantlets (conventional - stem cuttings of 20 cm length, leaf buds of the upper, middle and inferior stem part) × 2 agrochemicals (control and treated). There was a remarkable decrease in some agronomic traits that ranged from 23% (number of branches) to 62% (shoot weight) when using leaf buds plantlets. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Propagation; Vigor; Field conditions; Root production.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401733
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