Physiological studies on salinity VI. Changes in water content and mineral composition of some plants over a range of salinity stresses

Heikal, M. M.

doi:10.1007/bf00015170

Cited by 14 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Mg concentrations in the leaves was significantly higher with the nonuniform salinization, indicating that the main source of this elem~nt was the compartment receiving the least saline nutrient solution. The higher levels of Ca in the other compartments could contributeto lowering Mg uptake (Bernstein, 1964;Heikal, 1977). The lower concentrations.…”

Section: Resultsmentioning

confidence: 99%

Growth, Nutrition, and Water Uptake of Tomato Plants with Divided Roots Growing in Differentially Salinized Soil¹

Papadopoulos¹,

Rendig²,

Broadbent³

1985

Agronomy Journal

View full text Add to dashboard Cite

Tomato (Lycopersicon esculentum Mill. var. VF 145) plants were grown in the greenhouse to determine effects of uniform and nonuniform salinity distribution on root growth and on water and N uptake. The plants were grown in Reiff sandy loam (Coarse‐loamy, mixed, nonacid, thermic Mollic Xerofluvents) using a technique by which the root system was divided and each of four quadrants allowed to grow in separate compartments. Nutrient solutions differing in salinity levels (1, 4, 7, and 10 dS/m; nonuniform treatment) were applied to the four compartments, or all four received a nutrient solution otherwise similar but with a salinity of 5.5 dS/m (uniform treatment). The salinization was brought about by a mixture of NaCl and CaCI2 in a ratio of 1:1 by weight. To determine sources of N taken up, sufficient K15NO3 was added to provide 2% 15N in the solution. Yields of shoots and roots were lower for the plants grown with the uniform than the nonuniform salinization treatment. With nonuniform salt distribution, about 62 and 8% by weight of the total root system were found in the compartments irrigated with nutrient solutions having initial salinities of 1 and 10 dS/m, respectively. About 63% of the total water taken up per plant was drawn from the compartment with the lowest salinity. With the uniform salt distribution treatment, N uptake into the shoots was more severely affected than growth. With treatments in which salinity was nonuniformly distributed, the main source of N was the compartment with the lowest salinity. The contribution of this compartment, however, decreased during the growing period as its relatively greater salinity buildup favored uptake of N by roots in the other compartments, initially irrigated with the more saline solutions. Plants growing in the units with the nonuniform salinity treatment generally showed lower leaf concentrations of Ca, Na, K, and Cl, but higher leaf concentrations of Mg and P than the plants growing in the uniformly salinized units. Unlike the other elements, K and P concentrations decreased with time. Differences in S concentrations as related to salinization treatments were variable during the growth period. Higher concentrations of the “bound” organic anion fraction, but lower concentrations of the “diffusible” fraction, as determined from differences in amounts of inorganic cations and anion present, were found in leaves of plants grown with the higher salinity levels. In general, for nutrition of tomato plants grown under conditions in which different regions of the root system are exposed to differences in salinity, the least saline environment is dominant, but over time root activity shows some accommodation to the presence of salt.

show abstract

Section: Resultsmentioning

confidence: 99%

Growth, Nutrition, and Water Uptake of Tomato Plants with Divided Roots Growing in Differentially Salinized Soil¹

Papadopoulos¹,

Rendig²,

Broadbent³

1985

Agronomy Journal

View full text Add to dashboard Cite

show abstract

“…These variable changes add more support to the results obtained by (Gates et ai. 1966, Wilson et al 1970, EI-Shourbagy and Missak 1975and Heikal 1976.…”

mentioning

confidence: 99%

Alleviation of the adverse effects of NaCl on germination of maize grains by calcium

Hamada¹

1994

Biol. plant.

View full text Add to dashboard Cite

The lengths of roots and shoots, fresh and dry matter yield, and the contents of insoluble saccharides and free amino acids were reduced with the rise in NaCl concentration. However, under combination of NaC1 with Ca 2+ ions, these parameters generally raised. Contents of soluble saccharides, proline and quaternary ammonium compounds increased with increasing NaCl concentration, but under addition of CaCl 2 or CaSO4, contents of these compounds were decreased. Low concentrations of NaC1 stimulated soluble proteins production, but higher concentrations decreased the content of soluble proteins. Addition of Ca 2+ in the media did not improve the soluble protein production. Insoluble proteins content was increased with the rise of salinity level, but these effects were more pronotaiced with NaC1 and CaCl 2 or CaSO 4 than with NaC1 only.Soil salinity is a worldwide problem hampering productivity of several agricultural crops. Many attempts have been made to alleviate the effect of sodium chloride on plant cells. Some of these studies concentrated on the effect of added Ca 2+ in counteracting the inhibitory effect of NaCI salinization on plants (e.g. Hyder and Greenway 1965, Chaudri and Wiebe 1968, Leopold and Willing 1984.The present investigation was undertaken to study the interactive effect of NaC1 salinity and Ca 2+ applied as CaCI 2 or CaSO 4 on germination, growth and some metabolic pools of maize plants.The germination experiments were performed as described by Maftoun and Sepaskhah (1978). Seeds of maize (Zea mays L.) were placed on absorbant pads in Petri-dishes to which 25 cm 3 of the nutrient solution with NaCI of different concentration (0.0 (control), 50, 100, 150, 200 mM) and with CaCI 2 or CaSO 4 (5raM) solution was added. Seeds were considered to be germinated after the radicle emerged from the testa. After 10 d of germination the length of the roots and of

show abstract

“…It has been reported that depending on experimental conditions, nutrient uptake slows down with salinity in certain plant species. In contrast, salinity accelerates nutrient uptake rather than inhibiting it in certain experimental conditions (Heikal, 1977). In this study, there was an increase in plant nutrients in general as in the results of Yıldırım et al.…”

Section: Discussionmentioning

confidence: 99%

Salt and heavy metal stress responses and metal uptake potentials of some leafy vegetables

Nasircilar,

Ulukapi,

Topcuoglu

et al. 2024

Agrosystems Geosci & Env

View full text Add to dashboard Cite

Abiotic stress conditions caused by increasing anthropogenic activities over the years necessitate using marginal waters in agricultural irrigation and pose a risk to public health by causing salt stress and heavy metal pollution in the soil. The study exposed rocket (Eruca sativa L.), cress (Lepidium sativum L.), and parsley (Petroselinum crispum Mill.) plants to heavy metals (Zn, Cu, Ni, Pb, Cd, and Cr at rates of 300, 140, 75, 300, 3, and 100 mg kg−1, respectively) and salt stress (3, 6, and 9 dS m−1). Both stress conditions affected plant growth negatively. Biomass losses reaching 88% occurred in the rocket, which was determined to be more sensitive to salt stress than heavy metal stress. In parsley, on the other hand, it was determined that the above‐ground organs were more affected by salt stress, but the negative effect of heavy metal stress on the roots was higher than salt stress. In cress, the cultivars produced different responses to stress factors. The Zeybek cultivar was more affected by salt stress, and Bahargülü was more affected by heavy metal stress. In general, an increase in macro‐ and micronutrients was found under stress conditions. In addition, it was determined that the plants were hyper‐accumulative in terms of lead absorption and were sorted as cress > parsley > rocket in terms of metal uptake. According to these findings, these plants should be grown taking into account the lead values in the soil, and consumers should be aware that they are a group of vegetables that accumulate lead.

show abstract

Physiological studies on salinity VI. Changes in water content and mineral composition of some plants over a range of salinity stresses

Cited by 14 publications

References 22 publications

Growth, Nutrition, and Water Uptake of Tomato Plants with Divided Roots Growing in Differentially Salinized Soil¹

Growth, Nutrition, and Water Uptake of Tomato Plants with Divided Roots Growing in Differentially Salinized Soil¹

Alleviation of the adverse effects of NaCl on germination of maize grains by calcium

Salt and heavy metal stress responses and metal uptake potentials of some leafy vegetables

Contact Info

Product

Resources

About

Physiological studies on salinity VI. Changes in water content and mineral composition of some plants over a range of salinity stresses

Cited by 14 publications

References 22 publications

Growth, Nutrition, and Water Uptake of Tomato Plants with Divided Roots Growing in Differentially Salinized Soil1

Growth, Nutrition, and Water Uptake of Tomato Plants with Divided Roots Growing in Differentially Salinized Soil1

Alleviation of the adverse effects of NaCl on germination of maize grains by calcium

Salt and heavy metal stress responses and metal uptake potentials of some leafy vegetables

Contact Info

Product

Resources

About

Growth, Nutrition, and Water Uptake of Tomato Plants with Divided Roots Growing in Differentially Salinized Soil¹

Growth, Nutrition, and Water Uptake of Tomato Plants with Divided Roots Growing in Differentially Salinized Soil¹