Genetic control of traits related to phosphorus use efficiency in tropical maize

Mendes, F. F.; Guimarães, L. J. M.; Guimarães, C. T.; Souza, João Cândido de; Guimarães, P. E. O.; Parentoni, S. N.

doi:10.1590/1984-70332015v15n2a12

Cited by 4 publications

(6 citation statements)

References 17 publications

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“…Subsequently, a backcross with the experimental hybrid (HD17) was needed to reduce the inoculum in the population (Figure 1, Item III) and restore the sanity, thus obtaining progenies that started the breeding program for low nutrient availability. Subsequently, three cycles of intrapopulation recurrent selection of half-sib progenies, with a selection intensity of 30%, were carried out using ears harvested at R 6 stage (selection), with recombination and restoration of balance between crop seasons (NASS et al, 2001). The seeds were harvested at the stage of complete physiological maturation, the central grains of healthy ears were collected, sun dried, and separated by progenies in 600 ml pet bottles, which were stored in a cold chamber.…”

Section: Methodsmentioning

confidence: 99%

“…DoVale et al ( 2012) evaluated genetic effects of traits associated with nitrogen use efficiency in corn and found variability between groups and efficiencies; they concluded that additive genetic effects were important for traits related to efficiency and that parents contributed in differently to the transmission of alleles; thus, they recommended intrapopulation methods. Mendes et al (2015) evaluated the genetic control of characteristics related to phosphorus (P) use efficiency in tropical corn and found predominance of dominance effects. This indicates that the plant breeding should be focused on obtaining hybrids to explore heterosis for characteristics related to P efficiency; thus, the interpopulation method would be more appropriated than intrapopulation.…”

Section: Namentioning

confidence: 99%

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Phenotypic and Genetic Parameters Estimated for Fresh Corn Under Different Nutrient Availability1

et al. 2021

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The objective of this work was to estimate and compare phenotypic and genetic parameters after three cycles of intrapopulation recurrent selection for fresh corn grown under three nutrient availability conditions. Three experiments derived from the same population (MV-003) were conducted to assess the ability of progenies to absorb nutrients, one under adequate fertilization (control; MV-006), one under low nitrogen availability (N; MV-006N), and one under low phosphorus availability (P; MV-006P). The experiments were carried out in randomized blocks, with 64 half-sib progenies and three replications for each nutritional condition. Chlorophyll index, plant height, ear insertion, ear diameter, ear length, unhusked ear yield, and marketable husked ear were evaluated. The populations showed variability for the three nutrient availability conditions. The variability reduced after only three selection cycles; thus, evaluating a higher number of half-sib progenies, above 64, under low N and P availability is indicated. The rates used to identify the most efficient progenies in breeding programs should be close to the appropriate one, with a slow reduction after the selection cycles. The variability will be thus maintained, with a greater possibility of identifying more promising progenies. In addition, the frequency of favorable alleles increases more gradually and effectively. The N and P rate of 60 kg ha-1 is not indicated as a critical level for the initial phase of the program.

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Section: Methodsmentioning

confidence: 99%

Section: Namentioning

confidence: 99%

Phenotypic and Genetic Parameters Estimated for Fresh Corn Under Different Nutrient Availability1

et al. 2021

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“…The phosphorous utilization efficiency (PUtE) refers to the mobilization of P within the plant for sustainable biomass production and is expressed as the ratio of plant biomass produced per unit of P taken up [21]. Development of mungbean cultivars with high phosphorus uptake and utilization efficiency is aimed to reduce the overall application of phosphatic fertilizer in the soil and also to improve the utilization of soil P. Further, various traits governing PUE are polygenic and are controlled by quantitative trait loci [22,23].…”

Section: Introductionmentioning

confidence: 99%

Genetic Dissection of Phosphorous Uptake and Utilization Efficiency Traits Using GWAS in Mungbean

et al. 2021

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Mungbean (Vignaradiata L. Wilczek) is an early maturing legume grown predominantly in Asia for its protein-rich seeds. P deficiency can lead to several physiological disorders which ultimately result in a low grain yield in mungbean. The genetic dissection of PUpE (Puptake efficiency) and PUtE (P utilization efficiency) traits are essential for breeding mungbean varieties with a high P uptake and utilization efficiency. The study involves an association mapping panel consisting of 120 mungbean genotypes which were phenotyped for total dry weight, P concentration, total P uptake, and P utilization efficiency under low P (LP) and normal P (NP) conditions in a hydroponic system. A genotyping-by-sequencing (GBS) based genome-wide association study (GWAS) approach was employed to dissect the complexity of PUpE and PUtE traits at the genetic level in mungbean. This has identified 116 SNPs in 61 protein-coding genes and of these, 16 have been found to enhance phosphorous uptake and utilization efficiency in mungbeans. We identified six genes with a high expression (VRADI01G04370, VRADI05G20860, VRADI06G12490, VRADI08G20910, VRADI08G00070 and VRADI09G09030) in root, shoot apical meristem and leaf, indicating their role in the regulation of P uptake and utilization efficiency in mungbean. The SNPs present in three genes have also been validated using a Sanger sequencing approach.

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“…This element plays a role in root growth [6][7], metabolic processes such as ATP's and nucleic acids' formations and photosynthesis [8][9] that result in high quality of the crops. However, the majority of Brazilian soils have low natural fertility and high phosphorus fixation capacity [10][11].…”

Section: Introductionmentioning

confidence: 99%

Development of Pumpkin Young Plants Receiving Dosages of Phosphorus from Different Sources

Franco

Oliveira

Alves

et al. 2019

JEAI

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Aims: The research aimed to analyze the effect of five different dosages and three sources of phosphorus on the growth and development of young plants of pumpkins (Cucurbita moschata), cultivar Jacarezinho. Study Design: The experimental design utilized was the completely randomized design with the factorial arrangement 5 x 3 with three repetitions. Place and Duration of Study: The experiment was performed in a greenhouse of the Federal Rural University of Amazônia in the Capitão Poço City, Pará State. The research was carried out from March to April 2016. Methodology: The analyzed variables were plant height (PH), stem diameter (SD), number of leaves (NL), fresh root mass (FRM), fresh aerial mass (FAM), dry aerial mass, (DAM) and dry root mass (DRM) at 30 days after sowing. The averages of dosages x sources interactions were submitted to a regression analysis. Results: There was a significant effect of the interaction dosage x source for the PH, FAM and DAM. However, the dose of fertilizer got an effect on the SD, with linear response. The plots that did not reserve any fertilizers showed the least response for all variables. ARAD was the source that had the least performance in the analyzed variables in comparison to others sources. Conclusion: The superphosphate and triple superphosphate sources provided better development and accumulation of dry matter.

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Genetic control of traits related to phosphorus use efficiency in tropical maize

Abstract: -Abstract -Knowing the inheritance of traits is essential to establish selection strategies in breeding programs

Cited by 4 publications

References 17 publications

Phenotypic and Genetic Parameters Estimated for Fresh Corn Under Different Nutrient Availability1

Phenotypic and Genetic Parameters Estimated for Fresh Corn Under Different Nutrient Availability1

Genetic Dissection of Phosphorous Uptake and Utilization Efficiency Traits Using GWAS in Mungbean

Development of Pumpkin Young Plants Receiving Dosages of Phosphorus from Different Sources

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