Variabilidade de progênies F2 de amendoim geradas por meio de seleção de genitores ISSR-divergentes

Santos, Roseane Cavalcanti dos; Queiroz, Camila Marques; Batista, Vandré Guevara Lyra; Silva, Carliane Rebeca Coelho; Pinheiro, Morganna Pollynne Nóbrega; Filho, Antônio Lopes de Arroxelas Galvão; Filho, Péricles de Albuquerque Melo; Lima, Liziane Maria de

doi:10.1590/s1806-66902013000300021

Cited by 8 publications

(7 citation statements)

References 8 publications

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“…Moreover, ISSR markers have a high degree of polymorphism, high reproducibility, when compared with other markers, and can achieve results in a timely and cost-effectively manner (Borba et al, 2005). Therefore, ISSR markers are very useful in studies that aim at determining the genetic distance between parents, as well as the performance of the hybrids for the construction of genetic linkage maps, and for the characterization of accessions and cultivars of several species (Santos et al, 2013;Soares et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity of native populations of Croton tetradenius Baill. using ISSR markers

Almeida-Pereira¹,

Silva²,

Alves³

et al. 2017

Genet. Mol. Res.

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ABSTRACT. Brazil has about 300 Croton species in different types of vegetation. Croton tetradenius Baill., which is endemic to the Northeast region and predominant in the Caatinga vegetation, stands out among the several species of this genus. Considering the importance of knowing the genetic variability of a species, the objective of this study was to analyze the genetic diversity of the genotypes of natural populations of C. tetradenius in the State of Sergipe, using ISSR molecular markers. Forty individuals were sampled in four natural populations of the State of Sergipe, Brazil. Thirteen primers were used for DNA amplification using ISSR-PCR, totaling 77 amplified fragments, of which 94.8% were polymorphic. Results of the cluster analysis obtained by the Jaccard's similarity index, using the UPGMA method, resulted in the formation of six distinct clusters. Analysis of molecular variance (AMOVA), used to estimate the genetic variability among populations, revealed significant genetic variance (P < 0.01) between and within the 2 C.S. Almeida-Pereira et al.Genetics and Molecular Research 16 (2): gmr16029602 studied populations, and most of the genetic diversity was found (87%) within populations. According to the Jaccard's similarity index, none of the studied plants was genetically identical. CTE210 and CTE305 presented high similarity index (0.76), while CTE105 presented low similarity index (<0.16) with all related individuals. ISSR markers were efficient and allowed the formation of a molecular profile, and had sufficient polymorphism to estimate the genetic variability between the accessions of the studied populations.

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Section: Introductionmentioning

confidence: 99%

Genetic diversity of native populations of Croton tetradenius Baill. using ISSR markers

Almeida-Pereira¹,

Silva²,

Alves³

et al. 2017

Genet. Mol. Res.

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“…In plant breeding programs focused on tolerance to abiotic stresses, the understanding of these biochemical mechanisms is critical for selection, since those procedures, based only on agronomic traits, may not reflect the actual status of the plant considering extrinsic variables associated with crop management (SANTOS et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Using molecular tools to select suitable parents to generate divergent populations, based on traits associated with tolerance to semiarid region, Santos et al (2013), generated a population from BR 1 (A. hypogaea subsp. fastigiata) and LViPE-06 (A. hypogaea subsp.…”

Section: Introductionmentioning

confidence: 99%

“…hypogaea), whose descendants showed high genetic variability for various agronomic traits adopted in peanut breeding program. In the present study, the four best lines of the population generated by Santos et al (2013) were used in order to estimate the genetic variability for drought tolerance, based on enzymatic descriptors and organic solutes.…”

Section: Introductionmentioning

confidence: 99%

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Genotypic Variability of Peanut Lines in Response to Water Stress, Based on Biochemical Descriptors

et al. 2016

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-Seven biochemical descriptors were used to estimate the genotypic variability of peanut in response to moderate water stress. Six genotypes, constituted by four lines and two cultivars, were grown in pots, each containing two plants. At 15 days after emergence (DAE), the treatment differentiation was carried out: Control-plants maintained with daily watering, and Stress-plants submitted to water stress by complete suspension of watering for 15 days. The experimental design was completely randomized with factorial scheme 6 x 2 (genotype x water treatments), with five replications. The biochemical variables evaluated were: catalase (CAT), ascorbate peroxidase (APX), guaiacol peroxidase (GPX), free proline, total carbohydrates, soluble proteins, and amino acids. Results obtained by biochemical analysis and estimation of genotypic variability indicated that proline is the most appropriate descriptor for selecting genotypes tolerant to water stress, which led to identification of L81V and L108V as promising lines for drought tolerance breeding program. Keywords:Arachis hypogaea L. Antioxidative enzymes. Organic solutes. Drought tolerance. VARIABILIDADE GENOTÍPICA DE AMENDOIM EM RESPOSTA A ESTRESSE HÍDRICO BASEADA EM DESCRITORES BIOQUÍMICOSRESUMO -Sete descritores bioquímicos foram utilizados para estimar a variabilidade genotípica de linhagens de amendoim submetidas a estresse hídrico moderado. Seis genótipos, sendo quatro linhagens e duas cultivares, foram cultivados em vasos, cada um contendo duas plantas e mantidas em casa de vegetação. Aos 15 dias após a emergência, procedeu-se a diferenciação dos tratamentos: Controle, as plantas mantidas com rega diariamente; Estresse, as plantas submetidas à suspensão total de rega durante 15 dias. O delineamento experimental foi inteiramente casualizado, com esquema fatorial 6 x 2 (genótipos x tratamentos hídricos), com cinco repetições. As variáveis bioquímicas avaliadas foram: catalase (CAT), ascorbato peroxidase (APX), guaiacol peroxidase (GPX), prolina livre, carboidratos totais, proteínas solúveis e aminoácidos. Baseado nos resultados das análises bioquímicas e de estimativa da variabilidade genotípica, a prolina demonstrou ser o descritor mais adequado para seleção de genótipos tolerantes ao estresse hídrico, contribuindo para indicar as linhagens L81V e L108V como mais promissoras, para um programa de melhoramento visando tolerância à seca. Palavras-chave:Arachis hypogaea L. Enzimas antioxidativas. Solutos orgânicos. Tolerância à seca.

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“…Breeding for drought tolerance has been an important strategy adopted by researchers to alleviate the water stress problems and to ensure the production in environments prone to drought (Pereira et al, 2012;Santos et al, 2013;Songsri et al, 2008). However, the inheritance of characters associated with drought adaptation is likely to be genetically complex, due to the number and arrangement of genes governing quantitative traits (Leal-Bertioli et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Assessment of drought tolerance of peanut cultivars based on physiological and yield traits in a semiarid environment

Pereira

Albuquerque

Filho

et al. 2016

Agricultural Water Management

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The regular water supply during life cycle is essential to determine the yield in the legumes. In semiarid environments, the irregular rainfall and high temperature influence the phenology of crops impairing the yield. Peanut is an oleaginous crop with broad adaptation to tropical and semiarid climates, but yield is often harmed when plants face water irregularities during reproductive phase. The recommendation of cultivars tolerant to environments with water-limitation is indispensable to farmers in order to ensure reasonable production when drought settles down. Here, we evaluating peanut bred lines in order to assess drought tolerance based on physiological and yield traits, in greenhouse and field assays. In greenhouse experiment, 2 genotypes (BR 1, drought tolerant and the sensible LViPE-06) and 2 descendant bred lines (earliness-LBM Branco and a mid-runner, LBR Branco) were submitted to 21 days of total water supression. Diffusive resistance, transpiration and leaf water potential were measured by porometer (LI 1600), from fully expanded leaves at mid canopy. Root length was also measured at final period of water stress. Further, in a 2-year field experiment carried out in semiarid environment (Barbalha, CE, Brazil), the genotypes were evaluated under rainfed and irrigation, aiming to estimating the yield trait and the efficiency of drought tolerance. Physiological and yield traits of all genotypes were altered under water stress and significant responses were observed. Both top lines showed physiological ability to tolerance to drought, but LBM Branco, an earliness and upright line, was classified as drought tolerant showing behavior near to BR 1. The losses in pod and seed yield were low, comparing to runner parent (LViPE-06). LBR Branco showed an intermediary performance between parents and was classified as moderately tolerant. Based on physiological and agronomic performances, LBM Branco can later be recommended for management in semiarid environment.

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Variabilidade de progênies F2 de amendoim geradas por meio de seleção de genitores ISSR-divergentes

Cited by 8 publications

References 8 publications

Genetic diversity of native populations of Croton tetradenius Baill. using ISSR markers

Genetic diversity of native populations of Croton tetradenius Baill. using ISSR markers

Genotypic Variability of Peanut Lines in Response to Water Stress, Based on Biochemical Descriptors

Assessment of drought tolerance of peanut cultivars based on physiological and yield traits in a semiarid environment

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