scholarly journals Comparative Growth and Ions Response to Phosphorus Application for Two Brassica Species under Salt Stress

2020 ◽  
pp. 24-31
Author(s):  
Badar-uz- Zaman ◽  
Sundas Nawaz
Keyword(s):  
Salt Stress ◽  
Nutrient Solution ◽  
Brassica Species ◽  
Dry Mass ◽  
Stress Conditions ◽  
Fresh Mass ◽  
Control Root ◽  
Genetic Level ◽  
Phosphorus And Potassium ◽  
Phosphorus Application

The genetic level differences between Brassica species can have potential impact on their performance under salt stress conditions together with Phosphorus and Potassium applications. In this study we hypothesized that certain level of salt stress mitigation can be done with applications of Phosphorus and Potassium solutions. Germinated seeds of Brassica juncea (var. Khanpur raya) and B. napus (Faisal canola), raised to 10 days seedlings stage and transferred to continuously aerated nutrient solution  For salt stress, applied NaCl @60 mM in the nutrient solution’ also applied phosphorus as potassium di hydrogen phosphate (PDP) @ 0 and 10 mM in triplicates. Khanpur raya and Faisal canola responded significantly (p< 0.01) to the application of PDP for growth and ions relations under salt stress and non-stress. Under stress conditions, shoot fresh mass (SFM) of Khanpur raya increased 10 percent with 10 mM of applied PDP than its control whereas SFM of Faisal canola increased 8 percent than its control. Root fresh mass (RFM) of Khanpur raya increased 8 percent with 10 mM of applied PDP than its control whereas RFM of Faisal canola increase 10 percent than its control. Dry mass of Khanpur raya increased 11 percent with 10 mM of applied PDP than its control whereas SDM of Faisal canola increased 6 percent than its control. Root dry mass (RDM) of Khanpur raya increased 18 percent with 10 Mm of applied PDP than its control whereas RDM of Faisal canola increased 19 percent than its control. In Khanpur raya Na+ /K+ ratio decreased 21 percent than the control, whereas this ratio decreased 24 percent in Faisal canola than its control. Under salt stress, physiological P-use in shoot and root of Khanpur raya increased 11 and 8 percent respectively than that of Faisal canola.

scholarly journals Hydroponics growth of Eucalyptus saligna Sm. on salt-stress mediated by sodium chloride

2012 ◽  
Vol 3 (4) ◽  
pp. 213-218 ◽  
Author(s):  
André Luís Lopes da Silva ◽  
Yohana de Oliveira ◽  
Roberson Dibax ◽  
Jefferson da Luz Costa ◽  
Gessiel Newton Scheidt ◽  
...  
Keyword(s):  
Salt Stress ◽  
Aerial Part ◽  
Dry Mass ◽  
Hydroponic Culture ◽  
Fresh Mass ◽  
Root Number ◽  
Eucalyptus Saligna ◽  
Volume Number ◽  
Micropropagated Plants ◽  
Fresh And Dry Mass

The aim of this work was to evaluate the growth of two clones of Eucalyptus saligna on salt-stress mediated by NaCl in hydroponics. Micropropagated plants of the clones p0 and p1 were acclimatizated and cultivated in hydroponics at 0 and 300 mM NaCl levels. The total length, volume, number, fresh mass and dry mass of the roots, the height, fresh and dry mass of the aerial part and the fresh  and dry mass of the complete plant were evaluated to the 14 days of hydroponic culture with NaCl. There were significant differences among the clones. The clone p0 was superior to the clone p1 in relation to volume of the roots, root number, root fresh mass and total fresh mass of the root. Regards the effect of the salinity on the plants, significant reduction was observed in the height of the aerial part, fresh mass of the aerial part and the total fresh mass. Even so, the interaction between the clones and the concentrations of NaCl was significant for the total fresh mass. In the period of 14 days of hydroponic culture on 300 mM NaCl was possible to discriminate these two clones in relation to the tolerance and susceptibility to the salt stress. The clone p0 presented higher growth and larger tolerance to the salinity than clone p1.

Ultrastructural and biochemical changes induced by salt stress in Jatropha curcas seeds during germination and seedling development

2015 ◽  
Vol 42 (9) ◽  
pp. 865 ◽  
Author(s):  
Nara L. M. Alencar ◽  
Cibelle G. Gadelha ◽  
Maria I. Gallão ◽  
Mary A. H. Dolder ◽  
José T. Prisco ◽  
...  
Keyword(s):  
Salt Stress ◽  
Seed Germination ◽  
Jatropha Curcas ◽  
Stress Proteins ◽  
Dry Mass ◽  
Nacl Stress ◽  
Seedling Development ◽  
Biochemical Changes ◽  
Stress Conditions ◽  
Ultrastructural Changes

Jatropha curcas L. is a multipurpose species of the Euphorbiaceae family that is widespread in arid and semiarid regions. This study investigated the ultrastructural and biochemical changes induced by salt stress during J. curcas seed germination and seedling development. Salt stress negatively affected seed germination and increased Na+ and Cl– contents in endosperms and embryo-axis. Lipids represented the most abundant reserves (64% of the quiescent seed dry mass), and their levels were strongly decreased at 8 days after imbibition (DAI) under salinity stress. Proteins were the second most important reserve (21.3%), and their levels were also reduced under salt stress conditions. Starch showed a transient increase at 5 DAI under control conditions, which was correlated with intense lipid mobilisation during this period. Non-reducing sugars and free amino acids were increased in control seeds compared with quiescent seeds, whereas under the salt-stress conditions, minimal changes were observed. In addition, cytochemical and ultrastructural analyses confirmed greater alterations in the cellular reserves of seeds that had been germinated under NaCl stress conditions. Salt stress promoted delays in protein and lipid mobilisation and induced ultrastructural changes in salt-stressed endosperm cells, consistent with delayed protein and oil body degradation.

scholarly journals Effects of salt stress on plant growth, stomatal response and solute accumulation of different maize genotypes

2004 ◽  
Vol 16 (1) ◽  
pp. 31-38 ◽  
Author(s):  
André Dias de Azevedo Neto ◽  
José Tarquinio Prisco ◽  
Joaquim Enéas-Filho ◽  
Claudivan Feitosa de Lacerda ◽  
José Vieira Silva ◽  
...  
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Plant Growth ◽  
Nutrient Solution ◽  
Dry Mass ◽  
Stomatal Response ◽  
Mass Ratio ◽  
Salt Tolerant ◽  
Maize Genotypes ◽  
Physiological Markers

Seeds from eight different maize genotypes (BR3123, BR5004, BR5011, BR5026, BR5033, CMS50, D766 and ICI8447) were sown in vermiculite, and after germination they were transplanted into nutrient solution or nutrient solution containing 100 mmol.L-1 of NaCl and placed in a greenhouse. During the experimental period plant growth (dry matter, shoot to root dry mass ratio, leaf area, relative growth rate, and net assimilation rate), leaf temperature, stomatal conductance, transpiration, predawn water potential, sodium, potassium, soluble amino acids and soluble carbohydrate contents were determined in both control and salt stressed plants of all genotypes studied. Salt stress reduced plant growth of all genotypes but the genotypes BR5033 and BR5011 were characterized as the most salt-tolerant and salt-sensitive, respectively. Stomatal response of the salt-tolerant genotype was not affected by salinity. Among the studied parameters, shoot to root dry mass ratio, leaf sodium content and leaf soluble organic solute content showed no relation with salt tolerance, i.e., they could not be considered as good morpho-physiological markers for maize salt tolerance. In contrast, sodium and soluble organic solutes accumulation in the roots as a result of salt stress appeared to play an important role in the acclimation to salt stress of the maize genotypes studied, suggesting that they could be used as physiological markers during the screening for salt tolerance.

scholarly journals Producing Nitrate-free Endive Heads: Effect of Nitrogen Form on Growth, Yield, and Ion Composition of Endive

1997 ◽  
Vol 122 (1) ◽  
pp. 140-145 ◽  
Author(s):  
Pietro Santamaria ◽  
Antonio Elia
Keyword(s):  
Growth Rate ◽  
Nutrient Solution ◽  
Value Added ◽  
Dry Mass ◽  
Leafy Vegetables ◽  
Fresh Mass ◽  
Nitrate Content ◽  
The European Union ◽  
N Accumulation ◽  
Total N

In a growth chamber, endive (Cichorium endivia L. var. crispum Hegi) plants were grown using a solution culture method to evaluate the influence of four ammonium : nitrate (NH4-N : NO3-N) percentage ratios (100:0, 70:30, 30:70, and 0:100) on growth (leaf area, dry mass, crop growth rate, relative growth rate, and net assimilation rate), yield characteristics (head and root fresh mass and root length), quality (dry matter, nitrogen, and nitrate), and inorganic ion content. No symptoms of NH4+ toxicity were detected in endive plants 8 weeks after beginning nutrient treatments. Moreover, by feeding N in mixed form, the growth indices increased compared to indices from feeding with any of the two N forms alone. Ammonium-fed plants produced nitrate-free heads with a fresh mass (171 g) similar to nitrate-fed plants. Compared to the other treatments, the heads of NH4+-fed plants were darker green and more succulent. Mixed N improved yield but caused a remarkable accumulation of nitrate in heads. Following an increase in NO3-N from 30% to 70% in the nutrient solution, head fresh mass rose from 196 to 231 g and NO3- concentration more than doubled (from 2.4 to 6.1 g·kg-1 fresh mass). With 100% of NO3-N, NO3- concentration was 5.5 g·kg-1 fresh mass. With higher NO3-N percentages in the nutrient solution, the difference in the concentration of inorganic cations and anions increased, but K+ concentration was also high in ammonium-fed plants (on average 77 g·kg-1 dry mass). Head total N accumulation was increased by the presence of NH4+ in the nutrient solution and decreased with 100% NO3-N. From the commercial viewpoint, the produce obtained from 100% NH4-N was good, with the value-added factor of the absence of nitrate. This may be an extremely remarkable factor because of the commercial limits on the allowable nitrate content in leafy vegetables already enforced by many European countries and those the European Union is going to adopt in a directive.

scholarly journals Effect of salt-stresses on the hormonal regulation of growth, photosynthesis and distribution of 14C-assimilates in bean plants

2015 ◽  
Vol 47 (3) ◽  
pp. 245-267 ◽  
Author(s):  
Z. Starck ◽  
R. Karwowska
Keyword(s):  
Salt Stress ◽  
Nutrient Solution ◽  
Hormonal Regulation ◽  
Apical Part ◽  
Nacl Stress ◽  
Stress Conditions ◽  
Bean Plants ◽  
Negative Effect ◽  
Aba Content ◽  
Regulation Of Growth

The experiments were carried out to study the effect of salt-stresses and ABA on the growth, photosynthesis and translocation of assimilates in bean plants. It was planed to reduce the content of GA<sub>3</sub> and cytokinins and increase ABA content in salinized plants. The results show that salt-stress (NaCl and concentrated nutrient solution), reduce all the investigated processes in a different degree. NaCl-stress retarded most seriously growth of apical part and blades in contrast to 7-times concentrated nutrient solution decreasing mainly the rate of root and blade growth. Photosynthesis and <sup>14</sup>C-translocation of <sup>14</sup>C-assimilates were retarded more seriously by NaCl than by 7-times concentrated nutrient. solution. In the case of seriously stressed plants GA<sub>3</sub> and cytokinins (more effectively) reversed the ,negative effect of stress conditions both on the photosynthesis and on the <sup>14</sup>C-tramslocation. On the basis of the obtained results, it seemes that changes in the rate of investigated processes in salinized plants are due to hormonal disturbances which cause directly or indirectly retardation of photosynthesis and trans-location of assimilates.

scholarly journals Foliar application of biofertilizer in semi-hydroponic lettuce fertigated with saline nutrient solution

2020 ◽  
Vol 11 ◽  
pp. e3115
Author(s):  
Ítala Tavares Guimarâes ◽  
Francisco de Assis Oliveira ◽  
Caio César Pereira Leal ◽  
Maria Williane de Lima Souza ◽  
Tatianne Raianne Costa Alves
Keyword(s):  
Leaf Area ◽  
Nutrient Solution ◽  
Foliar Application ◽  
Saline Water ◽  
Block Design ◽  
Dry Mass ◽  
Fresh Mass ◽  
Semi Arid Region ◽  
Leaf Succulence ◽  
Semi Arid

Water scarcity in the world is a problem diagnosed especially in countries with large semi-arid regions such as Brazil. Research has been conducted with a view to making use of saline waters as an input for cultivation, particularly in hydroponics, with especial focus on lettuce, the most prominent leafy vegetable in Brazil. The objective of this study was to evaluate the development of lettuce in a semi-hydroponic system fertigated with saline water and under foliar fertilization with biofertilizer. The present study was carried out in a greenhouse located in the experimental area of ​​the Department of Environmental and Technological Sciences (DCAT) of the Federal Rural University of the Semi-Arid Region, in the municipality of Mossoró, RN, Brazil. The experimental design was a randomized complete block design, with treatments arranged in a 2 x 4 factorial scheme, with 4 replicates, two salinity levels of the water used to prepare the nutrient solution (0.5 and 3.5 dS m-1) and four biofertilizer concentrations (0, 20, 40 and 60%) applied by foliar spraying. The evaluated characteristics were: shoot diameter, stem diameter, number of leaves, fresh mass, dry mass, leaf succulence, leaf area and specific leaf area. The use of saline water to prepare the nutrient solution reduces fresh mass and dry mass production in the lettuce crop. The biofertilizer can be applied through the leaves at concentration of up to 20%, promoting greater plant growth.

Mapping QTLs for Wheat Seedling Traits in RILs Population of Yanda 1817×Beinong 6 under Normal and Salt-Stress Conditions

2016 ◽  
Vol 42 (12) ◽  
pp. 1764 ◽  
Author(s):  
Sheng-Hui ZHOU ◽  
Qiu-Hong WU ◽  
Jing-Zhong XIE ◽  
Jiao-Jiao CHEN ◽  
Yong-Xing CHEN ◽  
...  
Keyword(s):  
Salt Stress ◽  
Wheat Seedling ◽  
Stress Conditions ◽  
Seedling Traits

NITROGEN NUTRITION OF CITRUS NURSERY STOCK IN PINE BARK SUBSTRATES.

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1161f-1161
Author(s):  
John D. Lea-Cox ◽  
Irwin E. Smith
Keyword(s):  
Nutrient Solution ◽  
Nitrogen Nutrition ◽  
Dry Mass ◽  
Pine Bark ◽  
Growing Period ◽  
Rough Lemon ◽  
Nursery Stock ◽  
Citrus Rootstock ◽  
Cleopatra Mandarin ◽  
Nutrient Solutions

Pine bark is utilized as a substrate in citrus nurseries in South Africa. The Nitrogen (N) content of pine bark is inherently low, and due to the volubility of N, must be supplied on a continual basis to ensure optimum growth rates of young citrus nursery stock. Three citrus rootstock (rough lemon, carrizo citrange and cleopatra mandarin) showed no difference in stem diameter or total dry mass (TDM) when supplied N at concentrations between 25 and 200 mg ·l-1 N in the nutrient solution over a 12 month growing period. Free leaf arginine increased when N was supplied at 400 mg·l-1 N. The form of N affected the growth of rough lemon. High NH4-N:NO3-N (75:25) ratios decreased TDM when Sulfur (S) was absent from the nutrient solution, but not if S was present. Free arginine increased in leaves at high NH4-N (No S) ratios, but not at high NH4-N (S supplied) ratios. Free leaf arginine was correlated with free leaf ammonia. These results have important implications for reducing the concentration of N in nutrient solutions used in citrus nurseries and may indicate that higher NH4-N ratios can be used when adequate S is also supplied.

Evaluation of Zeolite-based Soilless Root Media for Potted Chrysanthemum Production

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 465e-465
Author(s):  
Janet L. Carlino ◽  
Kimberly A. Williams ◽  
Earl R. Allen
Keyword(s):  
Crop Production ◽  
Dry Mass ◽  
Nutrient Leaching ◽  
Fresh Mass ◽  
Production Cycle ◽  
Control Medium ◽  
Fertilizer Rate ◽  
Innovative Technologies ◽  
Root Media ◽  
Soluble Fertilizer

Chrysanthemum growth and nutrient leaching of three clinoptilolite-based root media, which were formulated and provided by Boulder Innovative Technologies, Inc. and ZeoponiX, Inc., were compared to the performance of control plants grown in Sunshine Mix #2 (3 peat: 1 perlite, v/v). The control received 210 mg·L–1 N from an 18N–4P–15K soluble fertilizer at each irrigation. The experimental zeolite-based medium NZ, which contained untreated zeolite and received the same soluble fertilizer as the control, leached lower concentrations of NH4-N, K, and PO4-P for most of the production cycle compared to the control. Medium EZ1 was formulated to provide N, P, and K as fertilizer nutrients and produced plants similar to the control based on ratings, height, width, and dry mass, but not fresh mass, at harvest when the fertilizer rate was half of that applied to the control, 105 mg·L–1 N. Medium EZ2, which did not receive P or K from soluble fertilizer, produced plants similar to the control based on rating, height, and dry mass, but not width or fresh mass, with soluble fertilizer input reduced to only N. Tissue N, P, and K concentrations of plants grown in media EZ1 and EZ2 were lower than those of control plants. With further refinements, these zeolite-based products show promise for decreasing nutrient leaching during crop production and allowing for application of lower rates of soluble fertilizers.

Sign in / Sign up

Export Citation Format

Share Document