&lt;b&gt;Genetic divergence among castor bean lines and parental strains using ward’s method based on morpho-agronomic descriptors

Silva, Adielle Rodrigues da; Silva, Simone Alves; Santos, Lucas Ferraz dos; Souza, Deoclides Ricardo de; Araujo, Gilmara de Melo; Moreira, Roger William Fernandes

doi:10.4025/actasciagron.v39i3.32504

Cited by 4 publications

(3 citation statements)

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“…Also, castor bean has great genetic variability, which is easily observed in botanical and agronomic characteristics (Silva et al, 2017). However, these characteristics, especially quantitative ones, are influenced by the environment and epistasis.…”

Section: Introductionmentioning

confidence: 99%

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Research Article Joint analysis for oil content and TRAP markers in elite castor bean strains

Simões¹,

Silva²,

Machado³

et al. 2020

Genet. Mol. Res.

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The demand for quality vegetable oil, such as castor oil, has been increasing significantly due to its great applicability in the cosmetic and industrial sector, especially with the advent of biodiesel. Castor bean produces a non-edible oil, with unique chemical properties, which makes it potentially useful for the production of cosmetics, aircraft lubricants and biodiesel. Breeding programs aimed at increasing the oil content in castor bean seeds are of paramount importance to meet the requirements of this market. In view of the above, we examined the genetic variability of elite castor bean strains through joint analysis of the oil content trait and TRAP (Target Region Amplification Polymorphism) molecular markers. This analysis was performed using the means for seed oil content of 40 elite castor bean strains, developed by the breeding program of the Genetic Improvement and Biotechnology Unit of the Federal University of Recôncavo da Bahia, together with genotyping of this population by means of 44 combinations of TRAP primers (fixed and arbitrary primers). Genetic dissimilarity between the strains was calculated through the Gower dissimilarity index, using the UPGMA clustering method. The means for oil content rangeed from 39.10 (UFRB 36) to 55.39% (UFRB 209), demonstrating that there is ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 19 (4): gmr18688 K.S. Simoes et al. 2 genetic variability among the strains. The 44 TRAP combinations enabled the identification of 380 fragments, 61% of which were polymorphic. The joint analysis formed three clusters, showing that there is genetic divergence among these elite strains. Therefore, joint analysis of the seed oil content trait and TRAP markers is efficient to evaluate the genetic dissimilarity in castor bean strains, demonstrating potential for the breeding program of the species.

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Section: Introductionmentioning

confidence: 99%

“…Some experiments using this approach have been reported in studies with Pineapple sp. L. (Merr) (Machado et al, 2011), Carica papaya (Ramos et al, 2012), Passiflora (Machado et al, 2015), Jatropha curcas (Pestana-Caldas et al, 2016) and R. communis L. (Silva et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Research Article Joint analysis for oil content and TRAP markers in elite castor bean strains

Simões¹,

Silva²,

Machado³

et al. 2020

Genet. Mol. Res.

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“…The great variability among castor bean genotypes means there is a large genetic base for the creation of new strains with favorable genetic combinations. Therefore, a substantial challenge for breeders is to aggregate the highest possible frequency of desirable alleles in a single genotype (SEVERINO et al, 2006;PASSOS et al, 2010;PATEL & PATEL, 2014;SILVA et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Genetic parameters in agronomic characters for selection of superior lineages of Ricinus communis L

et al. 2019

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Knowledge on the variability and heritability of agronomic characters of interest aid the selection of superior materials. Thus, the objective of this study was to evaluate the genetic parameters of agronomic traits in castor bean plant lineages and to quantify the genetic correlations between them. The study was performed in the experimental area of the Federal University of the Recôncavo da Bahia, Cruz das Almas, Bahia. Seed oil content, vegetative cycle, plant height, and the number and weight of seeds per plant were evaluated in 47 lineages of castor bean seedlings. The coefficient of genetic variation was higher for weight of seeds per plant, revealing greater variability. The broad-sense heritability of individual plots presented a higher value for oil content and a lower value for seed number per plant. Selection precision was moderate for plant height, number and weight of seeds per plant, high for vegetative cycle, and very high for oil content. The genetic parameters allowed superior genotypes to be ranked and selected. Positive correlations between vegetative cycle and plant height, associated with negative correlations for number and weight of seeds, and oil content, allow significant gains for crop productivity.

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Genetic variability in Brazilian castor (Ricinus communis) germplasm assessed by morphoagronomic traits and gray mold reaction

Neto

Zeffa

Sartori

et al. 2021

An. Acad. Bras. Ciênc.

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The characterization and conservation of castor accessions in germplasm bank are essential in order to breeding programs achieve its goals. Despite Brazil having the 4 th largest castor germplasm bank in the world, castor diversity in Brazil remains little explored. Thus, this study aimed at characterize castor accessions collected in different Brazilian regions by means of 31 morphoagronomic traits and gray mold reaction. Forty accessions of the Universidade do Estado de São Paulo (UNESP), Botucatu, SP, Brazil, germplasm bank were evaluated. Genetic parameters were estimated for the quantitative traits, and the accessions were grouped by Ward method using the standardized Euclidean distance and the simple coincidence index for quantitative and qualitative data, respectively. Qualitative and quantitative traits were important to understand and differentiate castor accessions. The accessions showed a high variation regarding the castor gray mold reaction. The accessions assessed in this study have been preserved and can be used as a source for genetic variability in the development of new castor varieties in breeding programs.

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<b>Genetic divergence among castor bean lines and parental strains using ward’s method based on morpho-agronomic descriptors

Cited by 4 publications

References 4 publications

Research Article Joint analysis for oil content and TRAP markers in elite castor bean strains

Research Article Joint analysis for oil content and TRAP markers in elite castor bean strains

Genetic parameters in agronomic characters for selection of superior lineages of Ricinus communis L

Genetic variability in Brazilian castor (Ricinus communis) germplasm assessed by morphoagronomic traits and gray mold reaction

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