The difference between breeding for nutrient use efficiency and for nutrient stress tolerance

Maia, Ciro; DoVale, Júlio César; Fritsche‐Neto, Roberto; Cavatte, Paulo Cezar; Miranda, Glauco Vieira

doi:10.1590/s1984-70332011000300010

Cited by 25 publications

(36 citation statements)

References 15 publications

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“…This value confirms the results presented by Maia et al (2011), which stated that N-use efficiency and N-stress tolerance are inversely proportional traits. Thus, stress tolerant plants tend to be N-use inefficient and vice versa.…”

Section: Performance Of Plant Response Indices (Single-trait and Multsupporting

confidence: 92%

“…Due to an unfortunate genotypic correlation between N-use efficiency and N-stress tolerance (Maia et al, 2011), the genotypic values of NAE and LNTI were also predicted by REML/BLUP multi-trait (multivariate), in which the genotypic values are corrected by the covariance between the traits (Henderson and Quaas, 1976). The equation is as follows:…”

Section: Per Se Selection Indicesmentioning

confidence: 99%

“…With this in mind, breeding programs focus on two research areas, N-stress tolerance and N-use efficiency (Maia et al, 2011). Plants that are N-stress tolerant tend to have satisfactory yields despite stressful environments.…”

Section: Introductionmentioning

confidence: 99%

“…However, under optimal conditions, the yields are moderate or low. On the other hand, N-use efficient plants have high yields in favorable environments but suffer a significant reduction in yields under conditions of stress (Maia et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Accuracy and simultaneous selection gains for N-stress tolerance and N-use efficiency in maize tropical lines

Mendonça

Granato

Alves

et al. 2017

Sci. agric. (Piracicaba, Braz.)

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Section: Performance Of Plant Response Indices (Single-trait and Multsupporting

confidence: 92%

Section: Per Se Selection Indicesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Accuracy and simultaneous selection gains for N-stress tolerance and N-use efficiency in maize tropical lines

Mendonça

Granato

Alves

et al. 2017

Sci. agric. (Piracicaba, Braz.)

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“…Segundo Maia et al (2011), a massa de matéria seca da parte aérea e o comprimento de raízes possibilitam a seleção de genótipos de forma rápida e a baixo custo. Contudo, ainda são poucos os estudos sobre a influência desses caracteres na EUN.…”

Section: Introductionunclassified

Efeitos gênicos de caracteres associados à eficiência no uso de nitrogênio em milho

DoVale

Fritsche‐Neto

Bermudez

et al. 2012

Pesq. agropec. bras.

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Resumo -Os objetivos deste trabalho foram determinar o controle genético da eficiência no uso do nitrogênio (EUN), identificar a importância das eficiências na absorção (EAN) e na utilização (EUtN) na sua composição, e quantificar relação entre produção de matéria seca da parte aérea (MPS) e do sistema radicular com a EUN e com seus componentes. Foram avaliadas 41 combinações híbridas em duas disponibilidades de N: baixa (BN) e alta (AN). Utilizou-se o delineamento de blocos ao acaso com duas repetições, em arranjo fatorial simples (combinação híbrida x disponibilidade de N). As análises estatísticas foram realizadas por meio das equações de modelos mistos. Correlações de elevada magnitude foram detectadas entre EAN e EUN, bem como entre essas eficiências e a MPS, tanto em BN como em AN. Em ambas as disponibilidades de N, efeitos genéticos aditivos apresentaram maior importância para os caracteres associados à EUN. Dessa forma, a seleção baseada no desempenho individual de linhagens quanto à MPS pode possibilitar a obtenção de genótipos com alta EUN. Independentemente da disponibilidade de N, a EAN é o componente mais importante da EUN.Termos para indexação: Zea mays, capacidade de combinação, disponibilidade de nitrogênio, estresse nutricional, REML/Blup, sistema radicular. Genetic effects of traits associated to nitrogen use efficiency in maizeAbstract -The objectives of this work were to determine the genetic control of nitrogen use efficiency (NUE), to identify the importance of N acquisition (NAE) and utilization (NUtE) efficiencies on its composition, and to quantify the relation between production of shoot (SDM) and root dry matter mass with NUE and its components. Forty-one hybrid combinations were evaluated in two N availabilities: low (LN) and high (HN). A randomized complete block design with two replicates, in a simple factorial arrangement (hybrid combination x N availability), was used. Statistical analyses were done using mixed model equations. High magnitude correlations were detected between NAE and NUE, and between these efficiencies and SDM in LN and HN. In both N availabilities, additive genetic effects were more important for the traits associated with NUE. Therefore, selection based on the individual performance of inbred lines as to SDM can allow for the obtainment of genotypes with high NUE. Independently of N availability, NAE is the most important component of NUE.

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Genetic diversity among Brazilian carioca common bean cultivars for nitrogen use efficiency

et al. 2021

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The objective of this study was to determine the genetic diversity among Brazilian carioca common bean (Phaseolus vulgaris L.) cultivars for traits related to nitrogen use efficiency (NUsE). An additional objective was to identify potential parents and promising parental combinations to assist common bean breeding programs in the development of cultivars with improved NUsE. The experiments were carried out at the Experimental Stations of the Instituto de Desenvolvimento Rural do Paraná (IDR-Paraná) in Londrina and Ponta Grossa, Brazil, during the rainy season in 2017. Thirty-nine common bean cultivars were evaluated under high (40 kg N ha −1 ) and low N (0 kg N ha −1 ) applied as top-dressing. The cultivars were genotyped using the genotyping-by-sequencing (GBS) approach with restriction enzyme CviAII. A total of 23,823 single nucleotide polymorphism (SNP) markers were identified throughout the common bean genome. A wide genetic variability was observed for NUsErelated traits under high and low N conditions. In addition, correlations were found between shoot dry biomass and NUsE, N uptake efficiency (NUpE), and N utilization efficiency (NUtE) under low N, indicating the possibility of indirect selection of these traits by the plant shoot dry biomass. Interestingly, the most low-N-tolerant cultivars were not necessarily the most responsive and/or NUsE, suggesting that different morphophysiological mechanisms control these traits. The cultivars that stood out positively in this study can be used as parents in breeding programs aimed at developing cultivars that are adapted to N limitation.

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The difference between breeding for nutrient use efficiency and for nutrient stress tolerance

Cited by 25 publications

References 15 publications

Accuracy and simultaneous selection gains for N-stress tolerance and N-use efficiency in maize tropical lines

Accuracy and simultaneous selection gains for N-stress tolerance and N-use efficiency in maize tropical lines

Efeitos gênicos de caracteres associados à eficiência no uso de nitrogênio em milho

Genetic diversity among Brazilian carioca common bean cultivars for nitrogen use efficiency

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