Tolerance of tropical common bean genotypes to manganese toxicity: Performance under different growing conditions

González, Alonso; Lynch, Jonathan P.

doi:10.1080/01904169909365648

Cited by 24 publications

(8 citation statements)

References 15 publications

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“…Considerable variability can occur in the Mn concentration of seeds, influencing plant growth and development, crop yield and seed quality (Longnecker and Uren, 1990). Manganese toxicity is a major constraint for the production of common bean in tropical and subtropical soils (Gonzalez and Lynch, 1999), but it can be avoided if the soil Ca/Mn ratio is higher than 80 (Bekker et al, 1994). Ca may alleviate Mn phytotoxicity through the inhibition of Mn absorption (Bekker et al, 1994) and translocation to the shoots (Alam et al, 2006).…”

Section: Discussionmentioning

confidence: 99%

Diversity of seed mineral composition of Phaseolus vulgaris L. germplasm

Pinheiro

Baeta²,

Pereira

et al. 2010

Journal of Food Composition and Analysis

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Section: Discussionmentioning

confidence: 99%

Diversity of seed mineral composition of Phaseolus vulgaris L. germplasm

Pinheiro

Baeta²,

Pereira

et al. 2010

Journal of Food Composition and Analysis

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“…Broughton et al (2003) reported that 50% of the beans in Latin America and almost 75% of the beans in Africa are planted in soils deficient in P. In addition, tropical soils often have low pH, that can result in Al and/or Mn toxicity (Gonzalez and Lynch 1999). Lynch (2007) cites several factors that can limit the success of field screening for adaptation to low soil fertility, including spatial variability in the level of fertility, pH, compaction of the soil and confounding effects caused the presence of other abiotic, biotic or environmental constraints.…”

Section: Limitations Of Traditional Breeding and A Rationale For Molementioning

confidence: 99%

Achievements and limitations of contemporary common bean breeding using conventional and molecular approaches

Beaver

Osorno

2009

Euphytica

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Common bean (Phaseolus vulgaris L.) improvement programs have been successful using conventional breeding methods to accomplish a wide array of important objectives. Specific achievements include the extension of range of adaptation of the crop, the development of cultivars with enhanced levels of disease and pest resistance and breeding lines that possess greater tolerance to drought. The most effective breeding method depends on the expression and inheritance of the trait to be selected and the target environment. Many bean improvement programs use molecular markers to facilitate cultivar development. In fact, several recent germplasm releases have used molecular markers to introgress and or pyramid major genes and QTL for disease resistance. Related species (P. coccineus and P. acultifolius) via interspecific hybridizations remain an important albeit long-term source for resistance to economically important diseases. Slow progress has been made in the improvement of traits such as adaptation to low soil fertility and tolerance to high levels of soluble Al in the soil using conventional breeding methods. The inability to directly measure root traits and the importance of genotype 9 environment interaction complicate the selection of these traits. In addition, symbiotic relationships with Rhizobium and mycorrhiza need to be taken into consideration when selecting for enhanced biological N fixation and greater or more efficient acquisition of soil P. Genomic examination of complex traits such as these should help bean breeders devise more effective selection strategies. As integration of genomics in plant breeding advances, the challenge will be to develop molecular tools that also benefit breeding programs in developing countries. Transgenic breeding methods for bean improvement are not well defined, nor efficient, as beans are recalcitrant to regeneration from cell cultures. Moreover, if issues related to consumer acceptance of GMOs cannot be resolved, traits such as herbicide tolerance in transgenic bean cultivars which would help farmers reduce production costs and decrease soil erosion will remain unrealized.

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“…A tolerância ao Mn em concentrações tóxicas de seis genótipos de feijoeiros, em três condições de crescimento: solução nutritiva, areia e solo com aplicação de Mn, foi estudada por González & Lynch (1999). Os autores verificaram que alguns genótipos desenvolveram-se muito bem em solução nutritiva e areia; no entanto, no solo com Mn, houve sensível redução na produção de grãos.…”

Section: Introductionunclassified

Atributos químicos do solo e produção do feijoeiro com a aplicação de calcário e manganês

Heinrichs

Moreira

Figueiredo

et al. 2008

Rev. Bras. Ciênc. Solo

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Figueiredo (2) & Eurípedes Malavolta †(4)RESUMO O feijão (Phaseolus vulgaris L.) constitui a base alimentar da população brasileira. Muitos fatores determinam a baixa produtividade do feijoeiro, desde problemas políticos até fatores técnicos, dentre eles a adubação e nutrição. O objetivo foi avaliar os atributos químicos do solo e produção do feijoeiro (cv. Pérola) de acordo com a aplicação de calagem e Mn. O experimento foi realizado em vasos com Latossolo Vermelho-Amarelo distrófico típico fase cerrado, em delineamento inteiramente casualizado com três repetições, em esquema fatorial 2 x 6, envolvendo duas doses de uma mistura de CaCO 3 e MgCO 3 , na relação molar 3:1 (de calcário, calculadas) para elevar a saturação por base para 50 % e para 70 % e seis doses de Mn (0, 20, 40, 60, 80 e 100 mg dm -3 ). Na análise dos resultados, verificouse decréscimo no teor foliar de Mn de acordo com o aumento da saturação por base, não sendo observado o mesmo efeito no solo após o cultivo. O teor de Mn no solo para produção máxima de grãos mostrou-se semelhante para saturação por base de 50 e 70 %; no entanto, a dose do micronutriente aplicada para essa produção foi de 28 mg dm -3 e 57 mg dm -3 , respectivamente.Termos de indexação: Phaseolus vulgaris, adubação, nutrição de plantas, saturação por base.

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Tolerance of tropical common bean genotypes to manganese toxicity: Performance under different growing conditions

Cited by 24 publications

References 15 publications

Diversity of seed mineral composition of Phaseolus vulgaris L. germplasm

Diversity of seed mineral composition of Phaseolus vulgaris L. germplasm

Achievements and limitations of contemporary common bean breeding using conventional and molecular approaches

Atributos químicos do solo e produção do feijoeiro com a aplicação de calcário e manganês

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