Effect of salinity treatments on nutrient concentration in zucchini plants (Cucurbita pepo L. var. Moschata)

1997 ◽  
Vol 37 (5) ◽  
pp. 605 ◽  
Author(s):  
G. Villora ◽  
G. Pulgar ◽  
D. A. Moreno ◽  
L. Romero
Keyword(s):  
Cucurbita Pepo ◽  
Sodium Concentration ◽  
Growth Cycle ◽  
Total Calcium ◽  
Sodium Potassium ◽  
Potassium Sodium ◽  
Fruit Skin ◽  
Calcium And Magnesium ◽  
Sodium And Potassium ◽  
Total Sodium

Summary. Zucchini plants (Cucurbita pepo L. var. Moschata) grown in artificial soil under greenhouse conditions were supplied with differing amounts of NaCl (0, 30, 60 or 120 g/m2 ) during the entire growth cycle. The concentrations of both total and soluble sodium, potassium, calcium and magnesium in leaves as well as fruit (skin and pulp) were measured. Total sodium concentration in leaves increased with higher levels of applied NaCl, while in the fruit this trend was the reverse. As soil salinity increased, there was a corresponding decrease in the total and soluble potassium content of leaves but an increase in total and soluble concentrations of potassium in the fruit. The sum of both total and soluble sodium and potassium in the leaves generally increased with higher levels of applied NaCl, whereas the potassium : sodium ratio fell as salinity rose. In fruit, the sum of total and soluble sodium and potassium, as well as the potassium : sodium ratio, increased as the concentration of applied NaCl increased. The foliar levels of calcium and magnesium (except for total calcium readings) followed similar trends in relation to NaCl treatments as for sodium, while the response of calcium and magnesium in fruit tissues to the treatments was similar to that of potassium. Total calcium and magnesium levels were higher in leaves, with similar high levels in fruit tissues, these levels were higher when compared with other plants grown under saline conditions.

Performance of electrolyte measurements assessed by a trueness verification program

2016 ◽  
Vol 54 (8) ◽  
Author(s):  
Menglei Ge ◽  
Haijian Zhao ◽  
Ying Yan ◽  
Tianjiao Zhang ◽  
Jie Zeng ◽  
...  
Keyword(s):  
External Quality Assessment ◽  
Total Error ◽  
Homogeneous System ◽  
Serum Electrolyte ◽  
Sodium Potassium ◽  
Homogeneous Systems ◽  
Target Values ◽  
Fresh Frozen ◽  
Calcium And Magnesium ◽  
Sodium And Potassium

AbstractIn this study, we analyzed frozen sera with known commutabilities for standardization of serum electrolyte measurements in China.Fresh frozen sera were sent to 187 clinical laboratories in China for measurement of four electrolytes (sodium, potassium, calcium, and magnesium). Target values were assigned by two reference laboratories. Precision (CV), trueness (bias), and accuracy [total error (TEAbout half of the laboratories used a homogeneous system (same manufacturer for instrument, reagent and calibrator) for calcium and magnesium measurement, and more than 80% of laboratories used a homogeneous system for sodium and potassium measurement. More laboratories met the tolerance limit of imprecision (coefficient of variation [CVThe use of commutable proficiency testing/external quality assessment (PT/EQA) samples with values assigned by reference methods can monitor performance and provide reliable data for improving the performance of laboratory electrolyte measurement. The homogeneous systems were superior to the non homogeneous systems, whereas accuracy of assigned values of calibrators and assay stability remained challenges.

The Composition of Haemolymth in Aquatic Insects

1962 ◽  
Vol 39 (3) ◽  
pp. 325-344 ◽  
Author(s):  
D. W. SUTCLIFFE
Keyword(s):  
Amino Acids ◽  
Aquatic Insects ◽  
Free Amino Acids ◽  
Free Amino ◽  
Inorganic Phosphate ◽  
Potassium Concentration ◽  
Chloride Concentration ◽  
Sodium Concentration ◽  
Sodium Potassium ◽  
Sodium And Potassium

1. Analyses were made of haemolymph obtained from aquatic representatives of nine major orders in the Insecta. 2. In the Odonata, Plecoptera, Ephemeroptera and Hemiptera-Heteroptera, the sodium concentration is relatively high and the potassium concentration is low. The chloride concentration is relatively high, but it never exceeds the sodium concentration. 3. In the Neuroptera, Coleoptera, Trichoptera and Diptera the sodium concentration is relatively high and the potassium concentration is low. In Nymphula nymphaeta (Lepidoptera) both the sodium and potassium concentrations are low. In all of these endopterygotes the chloride concentration is relatively low. 4. There is no correlation between diet and the sodium/potassium ratio in haemolymph of aquatic insects. 5. The problem of cation-anion balance is discussed. It is suggested that free amino acids contribute little to the anion pool. Bicarbonate and phosphate, largely as inorganic phosphate, contribute a small amount to the anion pool in exopterygotes. Phosphate contributes considerably more to the anion pool in some endopterygotes. Nevertheless, in all of the insects investigated, there is a deficit of anions. This deficit is usually greater in the endopterygotes. 6. The calculated osmotic activities of the known ions and free amino acids are less than the observed osmotic activities of haemolymph. It is inferred that non-amino organic acids must be present. Preliminary investigations indicate that non-amino acids are present in the concentrations required to account for both the osmotic and the anion deficits.

Sodium, Potassium, Calcium, and Magnesium in Hair from Neonates with Cystic Fibrosis and in Amniotic Fluid from Mothers of Such Children

PEDIATRICS ◽  
1972 ◽  
Vol 49 (4) ◽  
pp. 620-624
Author(s):  
L. Kopito ◽  
E. Elian ◽  
H. Shwachman ◽  
E. Rossen
Keyword(s):  
Cystic Fibrosis ◽  
Amniotic Fluid ◽  
Scalp Hair ◽  
Water Soluble ◽  
Sodium Potassium ◽  
Healthy Infants ◽  
Calcium Complexes ◽  
Calcium And Magnesium ◽  
Normal Women ◽  
Sodium And Potassium

The concentration of Na, K, Ca, and Mg in amniotic fluid from mothers who have borne children with cystic fibrosis, is similar to that of normal women. Scalp hair of neonates with cystic fibrosis contains significantly elevated concentrations of sodium and potassium. Nearly all of the calcium and 80% of the magnesium in the hair of these patients may be extracted by washing or boiling the hair in water, whereas only a small fraction of the calcium and magnesium of the hair of healthy infants is water soluble. The increased or decreased solubilities of calcium complexes have been previously observed in various tissues of patients with CF. The inability of hair from patients with CF to bind calcium and magnesium may be related to the basic defect in this disease.

scholarly journals COMPARISON OF SERUM SODIUM, SERUM POTASSIUM, AND BLOOD HEMOGLOBIN CHANGES AFTER TRANSURETHRAL RESECTION OF THE PROSTATE BETWEEN IRRIGATION WITH NORMAL SALINE AND STERILE WATER

2011 ◽  
Vol 18 (2) ◽  
Author(s):  
Wikan Kurniawan ◽  
Trisula Utomo
Keyword(s):  
Serum Sodium ◽  
Normal Saline ◽  
Sodium Concentration ◽  
Saline Group ◽  
Sterile Water ◽  
Sodium Potassium ◽  
Group I ◽  
Concentration Changes ◽  
Group Ii ◽  
Sodium And Potassium

Objective: This study aims to know whether there are significant differences of blood sodium, potassium and hemoglobin level among patients post TURP who was irrigated by using normal saline and the sterile water. Material & Method: This is a single blind randomized clinical trial study performed from September 1, 2008 until August 31, 2009. Thirty-one subjects participated in this study. The subjects were divided into two groups, 14 subjects for normal saline (group I) irrigation and 17 subjects for sterilized water irrigation (group II). Results: There are statistically differences (p < 0,05) between hemoglobin concentrations changes in group I, and hemoglobin and sodium concentration changes in group II. There were no statistically differences (p > 0,05) in sodium and potassium changes in group I and potassium in group II. There are no statistically differences in hemoglobin, sodium, and potassium changes among two groups. Conclusion: Normal saline irrigant for irrigation after TURP give more stable post operative electrolyte profile compared to sterilized water. Keywords: TUR prostate, irrigation, serum sodium, potassium level differences.

Daily patterns of feeding and excretion in rats confined to metabolism cages : strain and age differences

1970 ◽  
Vol 4 (2) ◽  
pp. 215-225 ◽  
Author(s):  
D. Bellamy ◽  
P. A. Lamming ◽  
A. Stevenson
Keyword(s):  
Age Differences ◽  
Salt Solution ◽  
Water Loss ◽  
Sprague Dawley ◽  
High Turnover ◽  
Sodium Potassium ◽  
Daily Concentration ◽  
Calcium And Magnesium ◽  
High Concentrations ◽  
Sodium And Potassium

Data are presented on the daily feeding and excretion patterns of Wistar, Sprague-Dawley and Wistar/Sprague-Dawley hybrid rats confined to metabolism cages. All strains were characterized by the formation of a grossly hypertonic urine which contained high concentrations of both sodium and potassium. Daily concentration rhythms were found in urinary sodium, potassium, calcium and magnesium, but the magnitude of these rhythms depended on strain and age. Rats of all ages were characterized by a high turnover of water and salts. A large proportion of the water was lost by routes other than urine and faeces, and the animals appeared to absorb a slightly hypertonic salt solution from the intestine (the result of eating and drinking) in order to counteract this water loss.

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