The Physiology of Potassium in Crop Production

Oosterhuis, Derrick M.; Loka, Dimitra A.; Kawakami, Eduardo M.; Pettigrew, William T.

doi:10.1016/b978-0-12-800132-5.00003-1

Cited by 227 publications

(145 citation statements)

References 183 publications

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“…Literature reports indicate that excessive concentration of ions, especially Na + and Cl -may limit the uptake of other ions, particularly K + and Ca 2+ [Marschner, 1995]. Potassium is an essential ion determining cellular osmotic potential and stomata functioning [Oosterhuis et al, 2014]. In this study, the salttreated plants had low stomatal conductance that might be due to reduced potassium supply.…”

Section: Resultsmentioning

confidence: 72%

Response of Speckled Spur-Flower to Salinity Stress and Salicylic Acid Treatment

et al. 2015

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Section: Resultsmentioning

confidence: 72%

Response of Speckled Spur-Flower to Salinity Stress and Salicylic Acid Treatment

et al. 2015

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“…This effect of K ? deficiency may be caused by a wide range of changes in metabolite utilization and translocation that lead to an overall reduction in the amount of photosynthetic assimilates available for plant growth (Pettigrew 2008;Oosterhuis et al 2014). Such differences of responses to K ?…”

Section: Introductionmentioning

confidence: 99%

Physiological response to potassium deficiency in three sweet potato (Ipomoea batatas [L.] Lam.) genotypes differing in potassium utilization efficiency

et al. 2015

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Potassium (K ? ) is an essential mineral element affecting plant growth and development. The aim of this study was to investigate the physiological response to K ? deficiency in three sweet potato (Ipomoea batatas [L.] Lam.) cultivars with differing K ? utilization efficiencies (KUE). The effects on plant growth status, physiological characteristics, leaf ultrastructure, and photosynthesis were examined. The results showed that K ? deficiency significantly decreased total biomass productivity, root yield, photosynthetic efficiency, and chlorophyll (Chl) content, while increased leaf sucrose and proline content of the three cultivars. K ? deficiency caused acute damage to chloroplast ultrastructure associated with leaf Chl biosynthesis and photosynthate accumulation, and also disturbed the protective enzymes involved in the antioxidative defense system. Compared with the other two cultivars, Xushu32 had higher root yield and better growth performance under K ? deficiency, which was mainly attributed to its high KUE and greater carbohydrate conversion and net photosynthetic efficiency. As a whole, these data suggest that greater tolerance to K ? deficiency among sweet potato genotypes is associated to the capability to mount a stronger physiological stress response during growth.

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“…Potassium and Mg have key roles in physiological and biochemical processes in the plant, such as enzyme activation, protein and chlorophyll synthesis, photosynthesis, osmoregulation, phosphorylation and carbohydrate partitioning, which greatly influence the growth of plants, crop yield and product quality (CAKMAK & SCHJOERRING, 2008;HAWKESFORD et al, 2012;OOSTERHUIS et al, 2014;ZÖRB et al, 2014). Furthermore, K also plays very important roles in human health, e.g.…”

Section: Resultsmentioning

confidence: 99%

Leaf Nutrient Concentrations Among Progenies of Interspecific Oil Palm Hybrid

Franzini¹,

Silva²,

Gomes³

et al. 2016

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The objective of this work was to evaluate the variation in diagnostic leaf nutrient concentration of oil palm interspecific hybrid (Elaeis oleifera x Elaeis guineensis -HIE OxG) progenies and its effect on fertilizer recommendation. A plant nutrition study was conducted in a plant breeding experiment installed at a farm of the Grupo Marborges, Moju municipality, Pará state, Brazil. Significant differences were observed in K, Mg, B, Cu and Mn concentrations in the leaves among the progenies evaluated. The variation on K and Mg concentration in the diagnostic leaf influenced the fertilizer recommendation based on the criterion of the leaf analysis.

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The Physiology of Potassium in Crop Production

Cited by 227 publications

References 183 publications

Response of Speckled Spur-Flower to Salinity Stress and Salicylic Acid Treatment

Response of Speckled Spur-Flower to Salinity Stress and Salicylic Acid Treatment

Physiological response to potassium deficiency in three sweet potato (Ipomoea batatas [L.] Lam.) genotypes differing in potassium utilization efficiency

Leaf Nutrient Concentrations Among Progenies of Interspecific Oil Palm Hybrid

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