Phosphorus uptake efficiency, root morphology and architecture in Brazilian wheat cultivars

Silva, Alinne da; Bruno, Isabeli Pereira; Franzini, Vinícius Ide; Marcante, Nericlenes Chaves; Benitiz, Leticia; Muraoka, Takashi

doi:10.1007/s10967-015-4282-3

Cited by 17 publications

(26 citation statements)

References 36 publications

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“…For forage or hay production, oat removal rate fertilization is 10 kg P 2 O 5 t -1 (FIORIN & LIMA, 2016). These amounts closely correlate to oat removal rate recommendations in other countries (NAKAGAWA et al, 2009; Manica and Escosteguy SORATTO & CRUSCIOL, 2008;SILVA et al, 2015;PARK et al, 2016). Moreover, 16 kg P 2 O 5 t -1 of grain has been reported by NAKAGAWA & ROSOLEM (2005), which is overestimated compared to other studies cited above and technical indications.…”

supporting

confidence: 78%

Phosphorus requirement and partitioning in oat cultivars

Manica

Escosteguy

2019

Cienc. Rural

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Maintenance fertilization changes with nutrient requirements and partitioning, but these are not well known for oat cultivars. The aim of this study was to evaluate whether phosphorus (P) requirements and partitioning vary among cultivars of oat (Avena sativa L.). The UPFA 'Ouro', UPFPS 'Farroupilha', IPR 'Afrodite', URS 'FAPA Slava', 'Barbarasul', 'FAEM 007', URS 'Taura', and 'URS 21' were cultivated in a Latosol with high P content in a greenhouse in 2015. Plants were sampled at physiological maturity and divided into roots, stem, leaves, and grain tissues. Phosphorus content and the dry matter weight of these parts were evaluated and the uptake amount and partitioning of P were estimated. The values of these variables differed across cultivars, except the P content in the grain ('average', 4.0g P kg -1 ). 'Afrodite' and 'FAPA Slava' have lower requirements and partitioning of P in the grain, but these did not vary among the other cultivars. Requirements and partitioning of P in stem and leaves increased in the following order: 'Ouro' and 'Farroupilha'<'Taura' and 'FAPA Slava'<'URS 21'<'Afrodite', 'Barbarasul' and 'FAEM 007'. Requirement and partitioning of P in roots, stem, leaves, and grain differs across cultivars, which indicates that this factor, besides how the oat is used (such as for grain, pasture, silage, cover crop), can be used to improve maintenance fertilization. RESUMO:A adubação de reposição varia com a demanda e a partição de nutrientes, mas isso é pouco conhecido em relação as cultivares de aveia. O estudo objetivou avaliar se a demanda e a partição de fósforo (P) diferem entre cultivares de aveia-branca. As cultivares 'UPFA 'Ouro', 'UPFPS Farroupilha', 'IPR Afrodite', 'URS 21', 'URS FAPA Slava', 'Barbarasul', 'FAEM 007', 'URS Taura' e 'URS 21' foram cultivadas em um Latossolo com teor alto de P, em estufa agrícola, no ano de 2015. Na maturação fisiológica, as plantas foram fracionadas em raízes, colmo, folhas e grão e o teor de P e a massa seca desses órgãos foram avaliados, estimando-se a quantidade e a partição desse nutriente. O valor dessas variáveis diferiu entre cultivares, exceto o teor de P do grão (média 4,0g P kg -1 ). Nessa parte da planta, a demanda e a partição desse nutriente foi menor na 'Afrodite' e na 'FAPA Slava', não diferindo entre as demais cultivares. Na parte vegetativa (colmo + folhas), o valor dessas variáveis aumentou na seguinte A demanda e a partição de P em raízes, colmo, folhas e grão variam com a cultivar, indicando que esse fator, além da finalidade de uso da aveia-branca (grão, pastejo, silagem, cobertura do solo, etc) podem ser utilizados para melhorar a adubação de reposição. Palavras-chave: avena sativa L., adubação fosfática, adubação de reposição. SOIL SCIENCE

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supporting

confidence: 78%

Phosphorus requirement and partitioning in oat cultivars

Manica

Escosteguy

2019

Cienc. Rural

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“…Gunes et al [6] suggested that the difference in responses to P deficiency in soil between different wheat genotypes was due to the unequal P content of the seeds. In contrast, Ozturk et al [7] and Silva et al [8] concluded that although there were differences among cultivars in P reserves of wheat seeds, this variation did not influence the P uptake efficiency. Therefore, another advantage of isotopic dilution technique is the possibility to account for the plant P derived from the seed in the L value calculation, obtaining the so-called L value-seed.…”

Section: Introductionmentioning

confidence: 90%

“…Twenty days after seedling emergence, the root system was collected with the aid of a water jet and a 2 mm sieve. The roots were preserved in ethanol solution (25% v/v), scanned on a scanner (EPSON Perfection V700 PHOTO, DPI 23.6 pixels), and the images were analysed using WinRhizo Pro software (Regent Instruments, Quebec, Canada), according to Silva et al [8]. The parameters analysed from the scanned images were: total root length, total root surface area, total projected area of the roots, total root volume, and mean root diameter.…”

Section: Experiments 2 -Root System Evaluationmentioning

confidence: 99%

“…The root angles were evaluated according to Trachsel et al [25] and Silva et al [8]. The angle of first and second ramifications of basal roots, originating near the base of the hypocotyl relative to the horizontal plane, were determined by visual evaluation, and then assigned scores from one to nine, where 'one' (1) indicates angles smaller than 10 ° (shallower roots) and 'nine' (9) indicates angles greater than 90 ° (deeper roots).…”

Section: Experiments 2 -Root System Evaluationmentioning

confidence: 99%

“…Different plant species, or even different cultivars of the same species, have different P uptake abilities, which is due to: the physiological capacity to absorb P in diluted solutions; exudation of organic acids that are able to solubilise P adsorbed in the soil solid phase; greater or lesser root system development [3]; or morphology and root architecture characteristics [4]. Studies on the selection of P-uptake efficient species and cultivars have already been conducted using different methodologies and agricultural crops [3,[5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Phosphorus Efficiency in Brazilian Soybean Cultivars

Bruno

Silva

Franzini

et al. 2018

JEAI

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The primary goal of this study was to evaluate the phosphorus uptake and use efficiency in Brazilian soybean cultivars, besides root morphology and architecture characteristics related to phosphorus uptake, carrying out two greenhouse experiments. The experiment 1 was completely JEAI, 25(4): 1-14, 2018; Article no.JEAI.43230 2 randomised, with 56 treatments (soybean cultivars) and 3 replicates. Experiment 2 was completely randomised design with three replicates, and the ten cultivars (greater and lower efficiency) were selected for this assay according to their ability to absorb phosphorus less available determined in experiment 1. Original Research ArticleThe study was carried out at Center of Nuclear Energy in Agriculture, University of São Paulo, Brazil, between February 2011 and August 2012. The isotopic dilution technique was used in the first experiment to assess the phosphorus availability in the soil and to determine the ability of plants to access labile phosphorus by measuring the specific activity of plants grown in soil labeled with radioactive phosphorus. Nine cultivars showed greater phosphorus uptake and used efficiency. The second experiment evaluated the root morphology and architecture. The cultivars with greater uptake efficiency have root morphology and architecture characteristics that favour acquisition of phosphorus from soil compartments that are inaccessible to other cultivars. Phosphorus uptake by plants was not affected by soybean seeds phosphorus content. Identification of these cultivars is very important because it could enable soybean farming in low fertility soils, reducing fertiliser dependence.

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