Genotypic Variations of Phosphorus Utilization Efficiency of Crops

Ahmad, Zaheer; Gill, M. A.; Qureshı, Riaz

doi:10.1081/pln-100106973

Cited by 29 publications

(17 citation statements)

References 87 publications

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“…Differences in nutrient efficiency between the genotypes may be related to the demand of the nutrient at the cellular level, the affinity of the absorption system, compartmentalization in roots or other plant organs, the mobility in the xylem and phloem vessels, and changes in the rhizosphere during growth (MARSCHNER, 1995). Baligar and Fageria (1999) summarize the features related to plant nutritional efficiency as absorption, translocation, and nutrient utilization efficiencies. However, the usage efficiency of a particular nutrient reflects not only the content of the nutrient placed in different organs at a given nutritional condition but also the amount of dry matter produced per unit of nutrient acquired.…”

Section: Acta Scientiarum Agronomymentioning

confidence: 99%

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<b>Characterizing zinc use efficiency in varieties of Arabica coffee</b> - doi: 10.4025/actasciagron.v35i3.16322

Pedrosa¹,

Martínez²,

Cruz³

et al. 2013

Acta Sci. Agron.

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ABSTRACT. Among micronutrients, zinc (Zn) is important for coffee tree cultivation, especially in the clayey acid soils of Brazil's southeast region, where coffee production is an important activity. This study aimed to evaluate the Zn use efficiency of coffee tree varieties using two zinc concentrations. Seedlings of 11 varieties of coffee trees were grown in a greenhouse in nutrient solution containing either 0.0 or 6.0 μmol L -1 of Zn. After eight months, we evaluated the total biomass production, leaf biomass production, concentration of Zn in the plant organs, absorption efficiency, and Zn use efficiency. All characteristics were affected by the Zn concentration. The biomass production of apical leaves was most affected by the Zn treatments, with high variability for the studied varieties. The 'IPR-103' variety had the highest Zn use efficiency, and the 'San Ramon' and 'San Bernardo' varieties had the lowest Zn use efficiency. The 'Rubi' variety had a high and low Zn use efficiency when grown at 0.0 and 6.0 μmol L -1 of zinc, respectively. The 'Oeiras' variety had a low Zn use efficiency when cultivated at 6.0 μmol L -1 of zinc. The other varieties studied were moderately efficient in their use of zinc.Keywords: Coffea arabica L., micronutrient, zinc content, nutritional efficiency.Caracterização da eficiência do uso de zinco em variedades de café arábica RESUMO. Dentre os micronutrientes, o Zn é um dos mais importantes para o cafeeiro, especialmente em solos argilosos e ácidos do sudeste brasileiro, onde seu cultivo é uma importante atividade econômica. Este trabalho objetivou avaliar a eficiência de uso do zinco por variedades de cafeeiro cultivadas em doses contrastantes do elemento. Mudas de 11 variedades foram cultivadas, em casa de vegetação, em solução nutritiva, com duas concentrações de zinco (0,0 e 6,0 μmol L -1 ). Após oito meses determinaram-se: biomassa seca dos órgãos da planta, concentração de zinco, eficiências de absorção, de produção de biomassa, de produção de biomassa foliar e de utilização de zinco. A concentração de zinco fornecida afetou todas as características avaliadas. A produção de biomassa seca de folhas apicais foi a mais afetada, proporcionando grande variabilidade de resposta entre as variedades. A variedade IPR-103 foi a mais eficiente no uso de zinco, as variedades San Ramon e São Bernardo as menos eficientes. A 'Rubi' apresentou alta e baixa eficiência de utilização de zinco quando cultivada nas doses 0,0 e 6,0 μmol L -1 . A variedade Oeiras apresentou baixa eficiência de utilização na dose de 6,0 μmol L -1 . As demais variedades estudadas foram moderadamente eficientes no uso do elemento. Palavras-chave:Coffea arabica L., micronutrientes, conteúdo de Zn, eficiência nutricional.

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Section: Acta Scientiarum Agronomymentioning

confidence: 99%

“…A higher efficiency in absorbing nutrients from soil is sometimes related to root structure and function, including morphological features and the biochemical mechanisms responsible for transferring ions through the membranes of root cells (AHMAD et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

<b>Characterizing zinc use efficiency in varieties of Arabica coffee</b> - doi: 10.4025/actasciagron.v35i3.16322

Pedrosa¹,

Martínez²,

Cruz³

et al. 2013

Acta Sci. Agron.

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“…Phosphorus absorption (PA) was calculated by multiplying SPC by shoot DM: P absorption efficiency (PAE, mg P absorbed pot -1 /mg kg -1 Olsen P) was calculated by dividing PA by soil P availabllity expressed as mg kg -1 Olsen P. Phosphorus utilization efficiency (PUE, g DM pot -1 /g absorbed P pot -1 ) was calculated by dividing accumulated DM per pot by absorbed P per pot. This expresses the quantity of DM produced per unit of absorbed P (Ahmad et al, 2001;Acuña and Inostroza, 2012). Arbuscular mycorrhizal colonization.…”

Section: Measurementsmentioning

confidence: 99%

Phosphorus absorption and use efficiency by Lotus spp. under water stress conditions in two soils: A pot experiment

Castillo¹,

Acuña

Zagal³

et al. 2013

Chilean J. Agric. Res.

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The response to P and water deficiencies of forage Lotus species has not been sufficiently studied in the Andisol and Vertisol soil orders in Chile's marginal areas. A pot experiment under cover was carried out between October 2007 and March 2008 to study the effects of P and soil water availability (SWA) on DM production, P absorption, and P use efficiency in Lotus spp. The experiment included three Lotus (L. corniculatus L., L. tenuis Waldst. & Kit. ex Willd., and L. uliginosus Schkuhr) species, two soils (Andisol and Vertisol), two contrasting P levels (low and high), and two SWA levels (10% and 100%). A completely randomized design with a 3 × 2 × 2 × 2 factorial arrangement with four replicates was used. Accumulated shoot and root DM, P absorption and efficiency, and arbuscular mycorrhizal (AM) colonization were measured. Phosphorus absorption was significantly higher in Andisol with 100% SWA and high P in the three species, which was reflected in P efficiency where the species exhibited higher P absorption efficiency (PAE) and P utilization efficiency (PUE) with low P, and mean of the three species with low P and high SWA. When the P level was low, L. uliginosus showed the highest PAE and L. corniculatus exhibited the highest PUE. Phosphorus efficiency was also influenced by AM colonization since on the average mycorrhization in the three species was significantly higher in the low P treatments. Differences existed among species for DM production, response to P, P absorption, PAE, and PUE.

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“…It is the use of available N either resulting from a stronger uptake capacity (uptake efficiency) or more effective use of N taken up for dry matter production use (Lafitte and Edmeades, 1994;Sisson et al, 1991). Large differences have been shown to exist among species or cultivars of the same species in absorption, translocation, and use of mineral nutrients (Ahmad et al, 2001;Baligar and Fageria, 2001). Genotypic variations in NUE have been reported in different crops such as rice (Fageria and Baligar, 2003), maize (Machado and Fernandes, 2001), and tobacco (Ruiz et al, 2006) and it has recently been shown that one way of developing crop varieties with improved NUE is the identification of key elements that control N assimilation processes (Ruiz et al, 2006).…”

mentioning

confidence: 99%

Improving Nitrogen Use Efficiency in Melon by Grafting

Colla¹,

Suárez²,

Cardarelli³

et al. 2010

horts

133

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Identification of rootstocks capable of improving the nitrogen use efficiency (NUE) of the scion could reduce N fertilization and nitrate leaching; however, screening different graft combinations under field conditions can be costly and time-consuming. This study evaluated a rapid and economical methodology for screening of melon rootstocks for NUE. Two experiments were designed. In the first, melon plants (Cucumis melo L. cv. Proteo) either ungrafted or grafted onto four commercial rootstocks: ‘Dinero’ and ‘Jador’ (Cucumis melo L.), ‘P360’, and ‘PS1313’ (Cucurbita maxima Duchesne × Cucurbita moschata Duchesne) grown in hydroponics were compared in terms of shoot dry biomass, leaf area, root-to-shoot ratio, SPAD index, shoot N uptake, and nitrate reductase (NR) activity at the early developmental stage in response to nitrate availability (0.5, 2.5, 5, 10, or 15 mm of NO3–). The second experiment was aimed to confirm whether the use of a selected rootstock with high NUE (‘P360’) could improve crop performance and NUE of grafted melon plants under field conditions. In the first experiment, carried out under greenhouse conditions, melon plants grafted onto ‘Dinero’, ‘Jador’, and ‘P360’ rootstocks needed 5.7, 5.2, and 6.1 mm of NO3–, respectively, to reach half-maximum shoot dry weight, whereas plants grafted onto ‘PS1313’ rootstock and the control treatment (ungrafted plants) needed 9.1 and 13.1 mm of NO3–, respectively. Total leaf area, SPAD index, and shoot N uptake increased linearly and quadratically in response to an increase of the N concentration in the nutrient solution. At 2.5 mm of NO3–, melon plants grafted onto both C. melo and Cucurbita maxima × Cucurbita moschata rootstocks had the highest NR activity, whereas no significant difference was observed at 10 mm of NO3–. In the second experiment, carried out under open field conditions, increasing the N fertilization rates from 0 to 120 kg·ha−1 increased the total and marketable yields of melon plants, whereas the NUE decreased. When averaged over N levels, the marketable yield, NUE, and N uptake efficiency were higher by 9%, 11.8%, and 16.3%, respectively, in ‘Proteo’ grafted onto ‘P360’ than in ungrafted ‘Proteo’ plants.

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Genotypic Variations of Phosphorus Utilization Efficiency of Crops

Cited by 29 publications

References 87 publications

<b>Characterizing zinc use efficiency in varieties of Arabica coffee</b> - doi: 10.4025/actasciagron.v35i3.16322

<b>Characterizing zinc use efficiency in varieties of Arabica coffee</b> - doi: 10.4025/actasciagron.v35i3.16322

Phosphorus absorption and use efficiency by Lotus spp. under water stress conditions in two soils: A pot experiment

Improving Nitrogen Use Efficiency in Melon by Grafting

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