Adaptabilidade e estabilidade fenotípica de genótipos de amendoim de porte ereto

Gomes, Lidinalva de Resende; Santos, Roseane Cavalcanti dos; Filho, Clodoaldo José da Anunciação; Filho, Péricles de Albuquerque Melo

doi:10.1590/s0100-204x2007000700010

Cited by 19 publications

(25 citation statements)

References 7 publications

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“…Both were previously selected by using proline tests, in short and moderate water stress assays. Due to high earliness, both were recommended to semiarid environment (GOMES et al, 2007;NOGUEIRA et al, 2006;PEREIRA et al, 2012). Pereira et al (2015) used cluster analysis to estimate the genetic divergence of peanut lines tolerant to drought, based on physiological and biochemical characters, and reported that proline was the descriptor that most contributed to distinguish the genotypes, both in leaf and root tissues.…”

Section: Resultsmentioning

confidence: 99%

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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Section: Resultsmentioning

confidence: 99%

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

et al. 2016

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“…Del mismo modo, son próximos a las medias entre 1,99; 2,37 y 3,24 t ha -1 , encontrados por Bastos et al (2011) en experimento conducido en el estado de Goias, Brasil, utilizando tres variedades de porte erecto. Por otro lado, son inferiores a las medias entre 2,35 y 3,06 t ha -1 , obtenidos por Vasconselos et al (2015) al evaluar ocho genotipos de porte erecto de maní en el Brasil y a las medias entre 2,73 y 3,24 t ha -1 de granos con cáscara reportados por Gomes et al (2007), al comparar el rendimiento de cuatro cultivares de maní de porte erecto, en ocho ambientes del estado de Pernambuco, Brasil. Sin embargo, son superiores a las medias encontradas en Ecuador por Garcés-Fiallos et al (2014) de 1,08 a 1,51 t ha -1 , al evaluar durante dos años agrícolas cuatro variedades de maní.…”

Section: Resultados Y Discusiónunclassified

“…Por otro lado, son superiores a las medias entre 1,08 y 1,58 t ha -1 de granos con cáscara obtenido por Garcés-Fiallos et al (2014), evaluando cuatro variedades de maní durante dos años agrícolas en Ecuador. La media obtenida con Tatu IAC (1,47 t ha -1 ), es inferior al citado por Gomes et al (2007), quienes evaluando varios genotipos de maní de porte erecto obtuvieron rendimiento para la variedad Tatu de 1,82 t ha -1 .…”

Section: Resultados Y Discusiónunclassified

Agronomic performance from five semi erect bearing of peanut varieties in two locals of Chaco Central

et al. 2017

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“…(1) Entre os demais, a BR 1 é a mais indicada para a região Nordeste por ser mais precoce (87 dias), ter alta tolerância às condições de estresse hídrico e estabilidade para produção de grãos (GOMES et al, 2007;NOGUEIRA;SANTOS, 2000;SANTOS et al, 2010). O grupo 3 foi representado pelos genótipos rasteiros LGoPE-06 e LViPE-06, conhecidos como "tipo cavalo".…”

Section: Methodsunclassified

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

Santos¹,

Queiroz²,

Batista³

et al. 2013

Rev. Ciênc. Agron.

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-ISSR markers were used to discriminate intraspecific peanut accessions, and to utilize the most divergents aiming to generate variability by crossing. The accessions were grown in a greenhouse and at 20 days after sowing, leaves were collected for DNA extraction and subsequent ISSR-PCR tests. Ten primers were used to generate mono and polymorphic bands. Among them, the most contributive to discriminating accessions were UBC-818 and UBC-842, which respectively produced 14 and 12 bands, and a polymorphism rate of 64 and 83%. The primers UBC-847 and UBC-858 generated few bands, with over 60% monomorphic and low contribution to studies of access discrimination using ISSR markers. Three distinct clusters were formed in the dendrogram, among which two genotypes with greater divergence, represented by cultivar BR 1 (short cycle and upright) and line LViPE-06 (late cycle and runner), were selected for hybridization to generate genetic variability. The resulting F 2 progenies showed broad genetic variability, with large contribution to selection procedures for the to assist selection procedures in peanut. Based on the results obtained, it was possible to confirm the contribution of molecular tools to assist selection procedures in peanut.

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Adaptabilidade e estabilidade fenotípica de genótipos de amendoim de porte ereto

Cited by 19 publications

References 7 publications

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

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

Agronomic performance from five semi erect bearing of peanut varieties in two locals of Chaco Central

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

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