Potassium-Use Efficiency in Common Bean Genotypes

Fageria, N. K.; Filho, M. P. Barbosa; Costa, J. G. C. da

doi:10.1081/pln-100107605

Cited by 54 publications

(42 citation statements)

References 7 publications

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“…KUI includes K biological utilization index (KUI-B) and economic potassium utilization index (KUI-E). In the same external conditions, the K utilization efficiency is basically controlled by genetic traits of crops (Fageria et al, 2001). In this study, the KUI-B and KUI-E of EdVP1 transgenic wheat were significantly higher than those of wild type, which indicated that the K utilization efficiency of EdVP1 transgenic wheat was much higher.…”

Section: Grain Yield and K Utilization On Udic Argosolsmentioning

confidence: 60%

Elymus dahuricus H+-PPase EdVP1 enhances potassium uptake and utilization of wheat through the development of root system

Ruan

Zhang

Xin

et al. 2013

J. Soil Sci. Plant Nutr.

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We investigated the differences of K acquisition and utilization, morphological and physiological characteristics of roots and grain yield between Elymus dahuricus H + -PPase (EdVP1) transgenic wheat and wild type wheat under low K stress. The results showed that, the grain yield and K economic utilization index (KUI-E) in wild type wheat were only 61.14% and 50.20% of those in EdVP1 transgenic wheat. EdVP1 increased the free IAA accumulations in roots, which may play a key role in the development of root system. The total root length, total root surface area, root tips and total root volume in transgenic wheat were 2.26, 2.23, 2.34 and 2.00 times as high as those in wild type wheat, respectively. Excretion H + and cation exchange capacity (CEC) of roots, which were enhanced in transgenic wheat, were positively correlated with K content.The exudate of organic acid intransgenic wheat was 2.22 times as high as that in wild type wheat, leading to the strong K activation of transgenic wheat. Therefore, we assume that well-developed rootsystem containing prosperous root morphology, high excretion H + and CEC of roots and strong excretion ability of organic acids improved K acquisition and utilization efficiency in EdVP1 transgenic wheat.

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Section: Grain Yield and K Utilization On Udic Argosolsmentioning

confidence: 60%

Elymus dahuricus H+-PPase EdVP1 enhances potassium uptake and utilization of wheat through the development of root system

Ruan

Zhang

Xin

et al. 2013

J. Soil Sci. Plant Nutr.

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“…This may represent a survival strategy adopted by plants exposed to K + -shortage stress, consisting of the mobilization of K + from mature and senescing organs, to make it available for the youngest ones (Hewitt, 1963). As a consequence, symptoms of K + deficiency usually appear first in the older leaves (Fageria et al, 2001). Cakmak (2005) recently suggested that those signs could be associated with the oxidative degradation of chlorophyll by reactive oxygen species (ROS), whose production is enhanced by K + deficiency.…”

Section: Discussionmentioning

confidence: 99%

“…The importance of plants native to saline soil, i.e., halophytes for livestock feeding purposes is currently increasing. In this way, the identification, characterization, and development of crops with high K + -use efficiency along with K + fertilizer may be a viable strategy to improve yield and reduce production costs (Fageria et al, 2001). In saline areas, halophytes are often exposed to drought and the variable availability of nutrients depending on both time and space.…”

mentioning

confidence: 99%

“…The effects of potassium deficiency on mineral nutrition have been extensively studied (Diem and Godbold, 1993;Pujos and Morard, 1997). A large variation has been reported in both K + uptake and use efficiencies among crop species and genotypes, including tomato (Chen and Gabelman, 1995), common bean (Fageria et al, 2001), rice (Yang et al, 2004), wheat (Woodend and Glass, 1993;, and canola .…”

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confidence: 99%

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Differential Responses in Potassium Absorption and Use Efficiencies in the HalophytesCatapodium rigidumandHordeum maritimumto Various Potassium Concentrations in the Medium

Hafsi

Atia

Lakhdar

et al. 2011

Plant Production Science

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“…The number of grains per pod is a characteristic specific to each cultivar and is genetically determined with little influence from the environment (Pelá et al, 2009). Although strongly genetically controlled, the 100-grain weight is also influenced by environmental conditions, such as soil pH and N, P and CEC -Cation exchange capacity; ECEC -Effective cation exchange capacity; BS -Base saturation; SOM -Soil organic matter; Al saturation (Al/ECECx100) = 29%; 1 P and K were extracted by Mehlich-1; 2 Interpretation for Brazilian Cerrado soils, Sousa & Lobato (2002) K fertilization (Fageria et al, 2001;Fageria & Santos, 2008). However, 100-grain weight was not affected by P or K doses in our trial, likely because the content of these nutrients in the soil (Table 1) (2011) and Nascente & Cobucci (2015) found no significant differences in the number of grains per pod or 100-grain weight with increasing levels of P in the soil.…”

Section: Resultsmentioning

confidence: 99%

Phosphorus and potassium fertilization increase common bean grain yield in Mozambique

Carvalho

Nascente

Ferreira

et al. 2018

Rev. bras. eng. agríc. ambient.

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There is little information about common bean fertilization in African Savannas. The objectives of this study were as follows: i) to evaluate the common bean yield potential in the environmental conditions of Lichinga, Niassa, Mozambique, and ii) to determine the common bean response to phosphorus and potassium fertilization applied together in order to verify whether the interpretation of soil analysis for the Brazilian Cerrado could be adopted for Savanna soils in Mozambique. The experimental design was a randomized block design in a 5 x 4 x 2 factorial arrangement. Treatments consisted of a combination of phosphorus doses (0, 35, 70, 140 and 280 kg ha-1 of P2O5), potassium doses (0, 50 100 and 200 kg ha-1 of K2O), and different growing seasons (2012/2013 and 2013/2014). The field rainfed experiments were conducted in Lichinga city, province of Niassa. Common bean crops presented high productivity potential in rainfed systems in the environmental conditions of Lichinga, Niassa, Mozambique, reaching grain yields of up to 3,600 kg ha-1 depending on the rates of fertilization with phosphorus and potassium. Common beans responded to phosphorus and potassium fertilization despite high contents of these nutrients in the soil, according to the interpretation of soil analysis for the Brazilian Cerrado. Maximum grain yield in the average of two growing seasons was estimated to occur for 239 kg ha-1 of P2O5 and 141 kg ha-1 of K2O, indicating that further calibration studies for P and K are required for this specific region of Mozambique.

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Potassium-Use Efficiency in Common Bean Genotypes

Cited by 54 publications

References 7 publications

Elymus dahuricus H+-PPase EdVP1 enhances potassium uptake and utilization of wheat through the development of root system

Elymus dahuricus H+-PPase EdVP1 enhances potassium uptake and utilization of wheat through the development of root system

Differential Responses in Potassium Absorption and Use Efficiencies in the HalophytesCatapodium rigidumandHordeum maritimumto Various Potassium Concentrations in the Medium

Phosphorus and potassium fertilization increase common bean grain yield in Mozambique

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