scholarly journals Foliar Nourishment with Different Zinc-Containing Forms Effectively Sustains Carrot Performance in Zinc-Deficient Soil

Agronomy ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1853
Author(s):  
Ahmed A. M. Awad ◽  
Mostafa M. Rady ◽  
Wael M. Semida ◽  
Eman E. Belal ◽  
Wail M. Omran ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Dry Matter ◽  
Total Yield ◽  
Stability Index ◽  
Membrane Stability ◽  
Membrane Stability Index ◽  
Fresh Weight ◽  
Zno Nps ◽  
Cell Membrane Stability ◽  
Vital Functions

Among the essential micronutrients, zinc (Zn) affects vital functions in crop plants. The influences of foliar nourishing with certain Zn-containing forms on the growth, productivity, and physiology of carrot plants (cv. Fire wedge F1) and their nutritional contents when grown in Zn-deficient soil were examined in both 2019/2020 and 2020/2021 field trials. Two doses of zinc oxide nanoparticles (ZnO-NPs(1) = 20 and ZnO-NPs(2) = 40 mg L−1), zinc–EDTA (Zn–EDTA(1) = 1 and Zn–EDTA(2) = 2 g L−1), or bulk zinc oxide (ZnO-B(1) = 200 and ZnO-B(2) = 400 mg L−1) were applied three times. The data outputted indicated, in general, that ZnO-NPs(2) were the best treatment that conferred more acceptable plant growth (measured as shoot length and fresh and dry weights), physiology (measured as cell membrane stability index, SPAD readings, and nutrient uptake), and nutritional homeostasis (e.g., P, Ca, Fe, Mn, Zn, and Cu contents). All these positive attributes were reflected in the highest yield, which was measured as fresh weight, dry matter, length, diameter, volume, and total yield of carrot roots. However, there were some exceptions, including the highest membrane stability index in both seasons, the highest Cu uptake and Mn content in the first season, and root fresh weight in both seasons obtained with ZnO-NPs(1). Moreover, the maximum P uptake and root dry matter were obtained with ZnO-B(1) and the highest content of root P was obtained by ZnO-B(2). Based on the above data, foliar nourishing with ZnO-NPs(2) can be recommended for the sustainability of carrot cultivation in Zn-deficient soils.

scholarly journals Proline, Protein, Rwc and Msi Contents Affected by Paclobutrazol and Water Deficit Treatments in Strawberry Cv. Paros

2015 ◽  
Vol 48 (1) ◽  
pp. 107-114 ◽  
Author(s):  
S. Parvin ◽  
T. Javadi ◽  
N. Ghaderi
Keyword(s):  
Drought Stress ◽  
Cell Membrane ◽  
Water Content ◽  
Relative Water Content ◽  
Stability Index ◽  
Membrane Stability ◽  
Membrane Stability Index ◽  
Cell Membrane Stability ◽  
Relative Water ◽  
Leaf Relative Water Content

Abstract Drought is one of the critical environmental stresses that affect growth and development of plants. Plants are damaged directly and indirectly under drought stress. Increasing water stress tolerance in plants is crucial. The aim of this study was to investigate the effects of different water stress levels (-1, -5, and -10 bars) and paclobutrazol application (0 and 50 mg-1) on strawberry cv. Paros. According to analyses of variance there were significant effects of drought stress and paclobutrazol application on leaf area, leaf dry weight, leaf relative water content (RWC), cell membrane stability index (MSI), proline and protein content of leaves. Leaf area, leaf dry weight, leaf relative water content and cell membrane stability index decreased in drought stress, especially at -10 bars. Proline and protein contents were enhanced by increasing water stress levels. Paclobutrazol application increased leaf relative water content and cell membrane stability index, proline and protein contents of leaves. Leaf relative water content was 68.77% in -10 bars drought stress that increased to 79% in paclobutrazol treatment. Also, cell membrane stability index was 69.65% in severe drought stress and reached to 77% in paclobutrazol treatment. According to the results pacloburazol is a benefit substance to ameliorate drought stress effects in strawberry cv. Paros.

scholarly journals Effect of cold stress on boro rice seedlings

2017 ◽  
Vol 9 (2) ◽  
pp. 1036-1041 ◽  
Author(s):  
Priyanka Kumari ◽  
H. K. Jaiswal
Keyword(s):  
Cold Stress ◽  
Water Content ◽  
Chlorophyll Content ◽  
Relative Water Content ◽  
Stability Index ◽  
Membrane Stability ◽  
Membrane Stability Index ◽  
Relative Water ◽  
Cold Tolerant ◽  
Boro Rice

Cold stress at seedling stage is a major constraint in boro rice production. Nine boro rice lines were crossed in diallel fashion excluding reciprocals to obtain 36 crosses. All the 36 crosses along with parents were grown in nursery in three seasons (boro-2014, kharif-2015 and boro-2015). Performance of seedlings for survival per cent, chlorophyll content, relative water content, membrane stability index was recorded just before transplanting in all the three seasons. Scoring for cold tolerance was done in both boro seasons. Gautam showed highest survival rate over three seasons. Among crosses, IR 64 x Krishna Hamsa showed highest survival (84%) in boro-2014, MTU 1010 x Jaya (86.33%) in boro-2015 and MTU 1010 x Krishna Hamsa (95.67%) in kharif-2015. Jaya x Krishna Hamsa was most cold tolerant cross over both boro seasons. Significant positive correlation was observed among survival per cent, chlorophyll content, relative water content and membrane stability index over seasons.

Genetic variation amongst swede varieties and their hybrids and their response to soil fertility

1976 ◽  
Vol 87 (2) ◽  
pp. 443-446 ◽  
Author(s):  
O. A. Denton ◽  
W. J. Whittington
Keyword(s):  
Dry Matter ◽  
Total Yield ◽  
Gene Interaction ◽  
Matter Content ◽  
Root Weight ◽  
Environment Interaction ◽  
Dry Matter Content ◽  
Fresh Weight ◽  
Partial Dominance ◽  
Shoot Weight

SummaryThe mean total yield and mean fresh weight of seven swede varieties and their F1 hybrids was increased primarily by nitrogen and also by phosphorus fertilizer. There was no evidence of genotype × environment interaction for characters concerned with yield except for dry-matter content where two varieties, Best-of-All and Reform, were less stable to fertility environments than the others. Heterosis was common amongst F1 hybrids and this suggests their use in swede improvement: the inheritance pattern of root weight showed overdominance, shoot weight showed partial dominance and drymatter content showed additivity, with no evidence of gene interaction. Segregation for root fresh weight and dry-matter content occurred in F2 populations and although an overall negative correlation was found there was evidence that progeny from certain crosses gave reasonable prospects of combining both characters.

scholarly journals Potential use of germicides in vase solutions for gladiolus ‘White Friendship’

2017 ◽  
Vol 23 (1) ◽  
pp. 79
Author(s):  
Maria Carolina Casares ◽  
Ben-Hur Mattiuz ◽  
Ana Correa Muniz ◽  
Claudia Mattiuz
Keyword(s):  
Water Balance ◽  
Stability Index ◽  
Membrane Stability ◽  
Fresh Mass ◽  
Postharvest Quality ◽  
Flower Senescence ◽  
Vase Life ◽  
Membrane Stability Index ◽  
Ambient Conditions ◽  
Inflorescence Development

Gladiolus (Gladiolus x hortulanus) is one of the most important crops for cut flowers worldwide, however having a short longevity. Usually, stems are harvested at the bud stage and need water and carbohydrates to support inflorescence development and to ensure flower quality. Vase solutions can supply these elements. However, sugars may benefit bacterial proliferation, which eventually can block xylem vessels. Bactericides potentially inhibit microorganism proliferation and new compounds are being tested constantly. This experiment was conducted to evaluate ‘White Friendship’ cut gladiolus performance in vase solutions with sodium dichloroisocyanurate dihydrate (Na-DCC), 8-hydroxyquinoline (8-HQ) or polymeric biguanide (PB). Inflorescences harvested at commercial maturity were placed in distilled water with 4% w/v of sucrose plus the germicides and kept under ambient conditions. Vase life, inflorescence postharvest development, fresh mass, membrane stability index and water relations were evaluated. There were no visual symptoms of toxicity in the treatments. The highest values of vase life, fully-open flowers, fresh mass and water balance were obtained with the Na-DCC treatment. Inflorescences treated with 8-HQ exhibited the highest values of solution uptake and wilting flowers. PB had a limited effect in gladiolus postharvest since the obtained results were similar to the sucrose alone. There was no effect of germicides on membrane stability index and its reduction was due to flower senescence progress only. Vase solution with Na-DCC plus sucrose improved water balance, increased open flowers, reduced wilting of flowers and fresh mass loss. Therefore, vase solutions with sucrose 4% w/v and Na-DCC enhance postharvest quality of cut gladiolus inflorescences.

scholarly journals Antioxidant activity of enzymatic system of two different wheat (Triticum aestivum L.) cultivars growing under salt stress

2011 ◽  
Vol 57 (No. 3) ◽  
pp. 101-107 ◽  
Author(s):  
W.M. Bhutta
Keyword(s):  
Antioxidant Enzymes ◽  
Salt Stress ◽  
Water Content ◽  
Relative Water Content ◽  
Stability Index ◽  
Membrane Stability ◽  
Membrane Stability Index ◽  
Salt Tolerant ◽  
Stress Levels ◽  
Relative Water

Soil salinity and semi-arid and arid climate of Pakistan is a major constraint in agriculture and predominantly in foodstuff production. It limits crop yield and use of land previously uncultivated. Wheat is moderately salt tolerant. A great variation was observed between and within the cultivars (genotypes: S-24 salt tolerant and DN-27 salt sensitive) in relationship to the choice of salinity level (control and treatments: in increment of 25 mol/m<sup>3</sup> NaCl/day to a final level of 80 and 160 mol/m<sup>3 </sup>NaCl into the nutrient solution) that will be used for screening purpose. Relative water content (RWC), membrane stability index and the activities of some antioxidant enzymes were determined after 20 and 40 days of salt stress exposure. As a result of activity enzymes, superoxide dismutase (SOD), peroxidase (POD) and catalase increased in S-24 with the increase of salt stress, while in DN-27 all the enzymes showed constant activity at all the stress levels. Meanwhile, relative water content and membrane stability index decrease the value as well as they increases the stress levels. It can be concluded that all three antioxidant enzymes were limiting factors for these genotypes and these reasons also led to the salt sensitivity in DN-27. Different selection methods should be applied to improve different traits in different conditions in wheat.

scholarly journals RESPONSE OF EGGPLANT PLANTS TO BIOSTIMULATORES AND SHADING

2016 ◽  
Vol 47 (4) ◽  
Author(s):  
Abu-Alaees & AL-Baity
Keyword(s):  
Leaf Area ◽  
Surface Area ◽  
Dry Matter ◽  
Total Yield ◽  
Fruit Weight ◽  
Fresh Weight ◽  
Main Root ◽  
Secondary Root ◽  
Chlorophyll Pigment ◽  
Significant Difference

A field experiment was carried out in the vegetable field of Horticulture Department and Landscape Gardening, College of Agriculture, Abu-Ghraib In the spring season 2014 to study the Response of Eggplant Plants to Biostimulators and Shading, to study of Two factors, the first factor represent two treatments, first is shading with plastic nets (50% light) and the second without shading, each of these treatments contained three replicates and distributed randomly Treatments were(Without adding, Endospor Dry Mix, Biohealth, Amino Alexin, interacion between Endospor Dry Mix and Biohealth interaction between Endospor Dry Mix and Amino Alexin interaction between Biohealth and Amino Alexin triple interaction between Endospor Dry Mix and Biohealth and Amino Alexin and symbolized by (Control, A, B, O, AB, AO, BO and ABO). The experiment carried out within (Nested Design), the Results and analyzed compared with the averages according to less significant difference test ( LSD) at the probability level of 5%.The results can be summarized by. The treatment A gave a significantly higher values in the leaf area are (1299 dm2.plant-1)  and the length of the secondary root is (35.08 mm) the roots surface area is (1300 cm2) and total yield is (92.10 ton.ha-1) while the treatment BO give a significantly higher values in the number of fruitful branches are (12.83 fruitful branch.plant-1) and the diameter of the main root is (4.93 mm). And the treatment AO give a significantly higher values in the concentration of total chlorophyll pigment in the leaves (543.5 mg.100g-1 fresh weight). And the treatment ABO give a significantly higher values in the fruit weight is (177.3 g) and the concentration of  Fe in the leaves (255.2 mg.kg-1 dry matter) and Zn (83.50 mg.kg-1 dry matter) and Mg (0.186 mg.kg-1 dry matter). The shading treatment a significantly higher values in the concentration of  Fe in the leaves (237.0 mg.kg-1 dry matter) and Zn (71.67 mg.kg-1 dry matter). The number of fruit branches are (10.83 fruitful branch.plant-1) and the leaf area are (1353 dm2.plant-1), and the concentration of chlorophyll pigment in the leaves is (493.6 mg.100g-1 fresh weight) and the diameter of the main root way (4.29 mm) and the length of secondary root is (31.58cm) and the surface area of the roots is (1190 cm) and the weight of the fruit is (169.6 g) and the total  yield is (76.05 ton.ha-1).The interaction between treatment A and shading significantly in the number of fruitful branches is (15 fruitful branch.plant-1) and the length of secondary root (39.33 cm) and the total yield is (98.03 ton.ha-1). And the superiority of interaction between the treatment AO and the shading significantly in the leaf area in were (1645 dm2.plant-1) and the concentration of chlorophyll pigment in the leaves way (575.0 mg.100 g-1 fresh weight). While the interaction between the treatment BO and shading in the surface area of the roots way (1336 cm2). And the interaction between the treatment ABO and shading give a significantly value in the fruit weight is (184.6 g) and the concentration of Fe in the leaves (261.0 mg.kg-1 dry matter), and Zn (86.00 mg.kg-1 dry matter) And the interaction between the treatment BO and without shading gave a significantly value in diameter main root way (5.37 mm).

scholarly journals Changes in antioxidative systems and membrane stability index of canola in response to saline soil and fertilizer treatment application

2016 ◽  
Vol 18 (3) ◽  
pp. 508-515
Keyword(s):  
Salinity Stress ◽  
Stability Index ◽  
Membrane Stability ◽  
Antioxidant Systems ◽  
Fertilizer Treatment ◽  
Antioxidant Enzyme Activities ◽  
Optimum Level ◽  
Membrane Stability Index ◽  
Inhibitory Effects ◽  
Treatment Application

<div> <p>The ability of fertilizer treatments (O (Optimum level), OP (Optimum level + twice amount of K<sup>+</sup>), OZ (Optimum level + twice amount of Zn<sup>2+</sup>) and OZP (Optimum level + twice amount of K<sup>+ </sup>+ twice amount of Zn<sup>2+</sup>)) to ameliorate salinity stress was studied in canola plants. In addition, fertilizer treatments; O, OZ and OZP couldn&rsquo;t increase the activity of antioxidant enzymes, such as superoxide dismutase (SOD; EC 1.15.1.1), catalase (CAT; EC 1.11.1.6) and ascorbate peroxidase (APX; EC 1.11.1.11). When these plants were treated with OP treatment, the inhibitory effects of salinity stress were decreased by increasing the membrane stability index and antioxidant enzyme activities by ameliorating the salinity injury. These results suggested that 500 (mg kg<sup>-1</sup>) potassium has an important role in the enhancement of plant antioxidant systems and resistance to salinity in canola plants.</p> </div> <p>&nbsp;</p>

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