2008
DOI: 10.1590/s0103-84782008005000055
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Efeitos gênicos do teor de cálcio em grãos de feijão

Abstract: O objetivo deste trabalho foi investigar a existência de efeito materno para o teor de cálcio em grãos de feijão e obter estimativas de herdabilidade e de efeitos gênicos para seleção em gerações precoces. Os cruzamentos controlados foram realizados entre as cultivares "Pérola" x "TPS Bonito" e "TPS Bonito" x "BRS Expedito". As gerações F1, F1 recíproco, F2, F2 recíproco, F3, F3 recíproco, RCP1 e RCP2 foram obtidas para cada combinação híbrida. O teor de cálcio foi determinado por meio de digestão nítrico-perc… Show more

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Cited by 21 publications
(24 citation statements)
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References 11 publications
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“…It was therefore possible to obtain only three lines with calcium concentration greater than the best control for calcium, the cultivar BRS Expedito (2.05 g kg -1 of DM). BRS Expedito was considered a control cultivar because of the high calcium concentration in grains found in this study and also by Jost et al (2009a). Thirteen lines showed higher iron concentration than the cultivar TPS Bonito.…”
Section: Genetic Parametersmentioning
confidence: 77%
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“…It was therefore possible to obtain only three lines with calcium concentration greater than the best control for calcium, the cultivar BRS Expedito (2.05 g kg -1 of DM). BRS Expedito was considered a control cultivar because of the high calcium concentration in grains found in this study and also by Jost et al (2009a). Thirteen lines showed higher iron concentration than the cultivar TPS Bonito.…”
Section: Genetic Parametersmentioning
confidence: 77%
“…The variance in calcium and iron concentrations in common bean grains was significant among the lines tested using both methods (Table 1) Jost et al (2009a) found that the calcium concentration in common bean grains were more influenced by additive genetic effects, and obtained narrow-sense heritability values of intermediate (47%) and high (63.61%) magnitudes. When the additive variance is responsible for most of the genetic variance, the character can be fixed; in this case, more facility in carrying out selection is expected.…”
Section: Resultsmentioning
confidence: 99%
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“…Os teores de Ca e Cu na semente decresceram com o aumento da dose de P (Figura 1). Essa diferença no teor de Ca nas sementes entre cultivares corrobora o estudos nos quais foi observado que há diferenças no teor de Ca entre cultivares de feijão (MIGLIORANZA et al, 2003;JOST et al, 2008). A maior disponibilidade de Ca nas sementes pode contribuir na melhoria da qualidade fi siológica de sementes de feijão, devido ao aumento da resistência do tegumento a danos mecânicos (BEVILAQUA et al, 2002).…”
Section: Ba -----------------Mg (G Kg -1 ) --------------------------unclassified