scholarly journals Morpho-Physiology and Anatomical Responses of Sorghum Seedlings as Affected by Salinity in Hydroponic Culture

2019 ◽  
Vol 17 (1-2) ◽  
pp. 52-65
Author(s):  
MN Sarkar ◽  
AKMZ Hossain ◽  
SN Islam ◽  
S Shahanaz ◽  
MZ Tareq
Keyword(s):  
Photochemical Efficiency ◽  
Poor Performance ◽  
Dry Weight ◽  
Root Diameter ◽  
Tolerance Index ◽  
Shoot Dry Weight ◽  
Root Area ◽  
Salinity Levels ◽  
Proline Concentration ◽  
Anatomical Parameters

An experiment was conducted at the growth chamber of Department of Crop Botany in the Bangladesh Agricultural University, Mymensingh, Bangladesh during March 2018 to observe morpho-physiology and anatomical response of sorghum. Six genotypes were grown in hydroponics with a full nutrient solution (NH4NO3-500 μM; Ca(NO3)2-500 μM; MgSO4-200 μM; KH2P04 -100 μM; FeC13-2μM; H2B03-11 μM; MnC12-2μM; ZnC12-0.35μM; CuCl2-0.2μM; (NH4)6Mo704-0.1 μM) and 100 mM salinity was imposed on 14 days seedlings. Data on morpho-physiological and anatomical parameters from seedlings were collected after 21 days and stress tolerant indexes of shoot and root were analyzed. Anatomical parameters like metaxylem and protoxylem thickness were also investigated. The results indicated that all the parameters viz. root length, shoot length, fresh and dry weight of shoot and root, stress tolerance index of root, and shoot, dry weight of shoot and root, relative chlorophyll content, photochemical efficiency (Fv/Fm), proline concentration, total root area, vascular cylinder area and root diameter were decreased with increasing salinity levels except leaf proline content. Genotypes BD 750 and BD 686 showed better performance considering tolerant indicators while the poor performance was exhibited by BD 747 and BD 753. Thus, based on overall observation BD 750 and BD 686 might be salt tolerant. The Agriculturists 2019; 17(1-2) 52-65

scholarly journals Effect of Salinity Levels (NaCl) on Yield, Yield Components and Quality Content of Sesame (Sesamum Indicum L.) Cultivars

2016 ◽  
Vol 5 (2) ◽  
pp. 104
Author(s):  
Helale Bahrami ◽  
Amir Ostadi Jafari ◽  
Jamshid Razmjoo
Keyword(s):  
Plant Height ◽  
Yield Components ◽  
Seed Oil ◽  
Tap Water ◽  
Dry Weight ◽  
Salinity Level ◽  
Shoot Dry Weight ◽  
Weight Yield ◽  
Yield And Yield Components ◽  
Salinity Levels

<p class="emsd-body"><span lang="EN-GB">Seeds of ten sesame cultivars (Karaj, Darab, Safiabad, Jiroft, Borazjan, Yellow-white, Felestin, Ultan, Isfahan and Abpakhsh) were sown into soil filled pots in 2008 and 2009. Pots were watered with six levels of salts (0.0038 (tap water as control), 4.89, 8.61, 10.5, 14.54, 17.74 ds.m<sup>-1</sup> NaCl) until full maturity. Plant height, root and shoot dry weight, yield and yield components, seed oil and protein contents of cultivars were measured. Increasing salinity caused significant reduction in plant height, root and shoot dry weight, yield and yield components, seed oil and protein contents of all cultivars. However, there were significant differences among the cultivars for measured traits for each salinity level. Based on seed oil yield data, Safiabad and Kraj at 0.0038ds.m<sup>-1</sup>, Safiabad and Ultan at 4.89ds.m<sup>-1</sup>, Ultan, Safiabad and Darab at 8.61 salinity levels were the superior cultivars. High variability in tolerance to salinity among the tested sesame cultivars suggests that selection of more salt tolerant cultivars for planting or breeding purposes is possible.</span></p><p class="emsd-body"><span lang="EN-GB">Highlights</span></p><p class="emsd-body"><span lang="EN-GB">Effects of contrasting salinity levels (0.0038 (tap water as control), 4.89, 8.61, 10.5, 14.54, 17.74 ds.m<sup>-1</sup>NaCl) on sesame cultivars were tested. Salinity reduced plant growth and yield and seed oil and protein contents. However, there were significant differences among the cultivars for measured traits for each salinity level. </span></p>

scholarly journals Effects of Mulch on Soil Moisture and Growth of Desert Willow

1998 ◽  
Vol 8 (4) ◽  
pp. 588-590 ◽  
Author(s):  
Helen Tyler Kraus
Keyword(s):  
Soil Moisture ◽  
Wood Chip ◽  
Dry Weight ◽  
Bare Soil ◽  
Shoot Dry Weight ◽  
Root Area ◽  
Root And Shoot Growth ◽  
Second Year ◽  
Chilopsis Linearis ◽  
Better Than

The objective of this research was to consider the effects of gravel, wood chip, and tire mulches and turf on soil moisture and root and shoot growth of Chilopsis linearis (Cav.) `Burgundy' (desert willow). Gravel, wood chip, and tire mulches retained greater soil moisture than bare soil (control) with little difference in soil moisture between the mulches. Mulched trees and bare soil had greater height and shoot and root dry weights than trees in turf. Turf conserved soil moisture better than bare soil but appeared to compete with desert willow for water and nutrients resulting in less growth. Trees with gravel and tire mulches had greater shoot dry weight in the second year of growth and greater root dry weight, root length, and root area in both the first and second years of growth after transplanting.

scholarly journals (62) Salinity and Growing Medium Affected Growth and Morphology of Gaillardia aristata

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1071C-1071
Author(s):  
Genhua Niu ◽  
Denise S. Rodriguez
Keyword(s):  
Plant Height ◽  
Tap Water ◽  
Dry Weight ◽  
The United States ◽  
Growing Media ◽  
Shoot Dry Weight ◽  
Drought Tolerant ◽  
Elevated Salinity ◽  
Affected Plant ◽  
Salinity Levels

Gaillardia aristata Foug. is a hardy, drought-tolerant perennial found throughout much of the United States. Little information exists on the salt tolerance of this plant when grown in various growing media. A study was conducted to characterize the response of G. aristata to three salinity levels (0.8, 2.0, or 4.0 dS/m) and four growing media: 1) 100% perlite; 2) 1 perlite: 1 Sunshine mix No. 4 (v/v); 3) 100% Sunshine mix No. 4; or 4) 1 Sunshine mix No. 4: 1 composted mulch (v/v). The type of medium influenced the dry weight of roots but not shoots, while salinity significantly influenced the dry weight of both shoots and roots. The dry weight of shoots was higher in plants irrigated with tap water (0.8 dS/m) compared to those irrigated with saline solution at 2.0 or 4.0 dS/m except for those grown in 100% Sunshine mix. The ratio of root to shoot dry weight was not influenced by salinity, but was highest in the plants grown in 100% perlite. Both medium and salinity affected plant height. Elevated salinity reduced plant height. Plants were taller when grown in 100% perlite and in 1 Sunshine mix: 1 composted mulch. However, plants had fewer lateral shoots when grown in 100% perlite or 1 Sunshine mix: 1 composted mulch. Some of the flower buds aborted when grown in 100% Sunshine mix or 1 perlite: 1 Sunshine mix compared to none in plants grown in 100% perlite or 1 Sunshine mix: 1 composted mulch. These results indicate that growth and morphology of G. aristata were affected by not only salinity, but also the type of medium.

scholarly journals Foliar treatment with proline and tyrosine affect the growth and yield of beetroot and some pigments in beetroot leaves

2013 ◽  
Vol 21 (2) ◽  
pp. 95-99 ◽  
Author(s):  
M. Rashad El-Sherbeny ◽  
Jaime A. Teixeira Da Silva
Keyword(s):  
Foliar Application ◽  
Dry Weight ◽  
Root Diameter ◽  
Growth And Yield ◽  
Agronomic Practices ◽  
Local Cultivar ◽  
Red Beet ◽  
Root Shoot Ratio ◽  
Leaves And Roots ◽  
Proline Concentration

ABSTRACT There is interest in increasing the yield and pigment content of beetroot and red beet since conventional agronomic practices or breeding efforts have not produced satisfactory results. Using a local cultivar of red beet (Beta vulgaris L. subsp. cicla) as the model plant, pot experiments were established to determine the effects of proline and tyrosine (used as plant growth regulators and for synthesis of beetroot pigments) on growth and yield and pigment (carotenoids and chlorophyll) levels in leaves. Proline or tyrosine at 100 and 200 mg·L-1 increased plant height, number of leaves, fresh and dry weight of leaves and roots, root/shoot ratio, and root diameter and length while a higher concentration (400 mg·L-1) increased some parameters but decreased others. Any proline concentration resulted in more leaf carotenoids and chlorophyll and higher carbohydrate content in leaves and roots than the controls, and tyrosine was more effective than proline. Tyrosine and proline proved to be successful agents in improving growth and yield characters of beet plants, especially at 100 mg·L-1 and 200 mg·L-1. Beetroot growers can effectively use these two amino acids as a foliar application to increase yield for edible purposes and to increase pigments for extraction for use in coloring and medicinal industries.

scholarly journals Relative Salt Tolerance of Seven Japanese Spirea Cultivars

2019 ◽  
Vol 29 (3) ◽  
pp. 367-373
Author(s):  
Yuxiang Wang ◽  
Liqin Li ◽  
Youping Sun ◽  
Xin Dai
Keyword(s):  
Salt Tolerance ◽  
Irrigation Water ◽  
Saline Solution ◽  
Visual Quality ◽  
Dry Weight ◽  
Saline Irrigation ◽  
Salt Damage ◽  
Shoot Dry Weight ◽  
Salinity Levels ◽  
Saline Solutions

Spirea (Spiraea sp.) plants are commonly used in landscapes in Utah and the intermountain western United States. The relative salt tolerance of seven japanese spirea (Spiraea japonica) cultivars (Galen, Minspi, NCSX1, NCSX2, SMNSJMFP, Tracy, and Yan) were evaluated in a greenhouse. Plants were irrigated with a nutrient solution with an electrical conductivity (EC) of 1.2 dS·m−1 (control) or saline solutions with an EC of 3.0 or 6.0 dS·m−1 once per week for 8 weeks. At 8 weeks after the initiation of treatment, all japanese spirea cultivars irrigated with saline solution with an EC of 3.0 dS·m−1 still exhibited good or excellent visual quality, with all plants having visual scores of 4 or 5 (0 = dead, 1 = severe foliar salt damage, 2 = moderate foliar salt damage, 3 = slight foliar salt damage, 4 = minimal foliar salt damage, 5 = excellent), except for Tracy and Yan, with only 29% and 64%, respectively, of plants with visual scores less than 3. When irrigated with saline solution with an EC of 6.0 dS·m−1, both ‘Tracy’ and ‘Yan’ plants died, and 75% of ‘NCSX2’ plants died. ‘Minspi’ showed severe foliar salt damage, with 32% of plants having a visual score of 1; 25% of plants died. ‘Galen’ and ‘NCSX1’ had slight-to-moderate foliar salt damage, with 25% and 21%, respectively, of plants with visual scores of 2 or less. However, 64% of ‘SMNSJMFP’ plants had good or excellent visual quality, with visual scores more than 4. Saline irrigation water with an EC of 3.0 dS·m−1 decreased the shoot dry weight of ‘Galen’, ‘Minspi’, ‘SMNSJMFP’, and ‘Yan’ by 27%, 22%, 28%, and 35%, respectively, compared with that of the control. All japanese spirea cultivars had 35% to 56% lower shoot dry weight than the control when they were irrigated with saline irrigation water with an EC of 6.0 dS·m−1. The japanese spirea were moderately sensitive to the salinity levels in this experiment. ‘Galen’ and ‘SMNSJMFP’ japanese spirea exhibited less foliar salt damage and reductions in shoot dry weight and were relatively more tolerant to the increased salinity levels tested in this study than the remaining five cultivars (Minspi, NCSX1, NCSX2, Tracy, and Yan).

scholarly journals Effect of Diluted Red Sea Water on Growth Behavior and Chemical Component of Moringa Plants

2021 ◽  
pp. 72-82
Author(s):  
Sami A. Metwally ◽  
M. I. Ezzo ◽  
Bedour H. Abou Leila ◽  
Aboelfetoh M. Abdalla
Keyword(s):  
Sea Water ◽  
Saline Water ◽  
Dry Weight ◽  
Protein Nitrogen ◽  
Reclaimed Soil ◽  
Salinity Levels ◽  
High Reduction ◽  
Calcium Iron ◽  
Almost All ◽  
Proline Concentration

Background: Moringa tree is a drought resistance tree, fast-growing, Moringa leaves, flowers and pods are a food source for human and animals. It is a rich source of calcium, iron and a good source of vitamins, B, A, C, amino acids. Shortage of water resources for irrigation especially in reclaimed soil considered is one of the great problems to cultivate traditional crops. Thus, nowadays the use of the non-traditional source of water, such as saline water is very important. Results: The obtained data recorded that the lowest level of salinity (4000 ppm) decreased plant height, fresh and dry weight of leaves, the stem fresh and dry weight, stem diameter recorded decreased. Increasing salinity levels up to 16000 ppm high reduction was registered in the previously mentioned parameters except for leaves number. The interaction between salinity and proline concentration exhibited in most cases reduction in total chlorophyll. Carbohydrate content, protein, nitrogen%, calcium%, recorded reduction in most cases under saline condition and their interaction with proline. While, Sodium %, Cl- percentage and proline content recorded increments in most cases under the previously mentioned circumstances. Conclusion: The results were nearly ascending order with increasing of salinity level. Increasing salinity to 16000 ppm decreased significantly the values of vegetative growth and almost all cases of chemicals constituents were reduced.

scholarly journals Use of Hyperspectral Reflectance Sensing for Assessing Growth and Chlorophyll Content of Spring Wheat Grown under Simulated Saline Field Conditions

Plants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 101
Author(s):  
Salah El-Hendawy ◽  
Salah Elsayed ◽  
Nasser Al-Suhaibani ◽  
Majed Alotaibi ◽  
Muhammad Usman Tahir ◽  
...  
Keyword(s):  
Linear Regression ◽  
Chlorophyll Content ◽  
Chlorophyll A ◽  
Vegetation Indices ◽  
Dry Weight ◽  
Field Conditions ◽  
Accurate Estimation ◽  
Wheat Genotypes ◽  
Shoot Dry Weight ◽  
Salinity Levels

The application of proximal hyperspectral sensing, using simple vegetation indices, offers an easy, fast, and non-destructive approach for assessing various plant variables related to salinity tolerance. Because most existing indices are site- and species-specific, published indices must be further validated when they are applied to other conditions and abiotic stress. This study compared the performance of various published and newly constructed indices, which differ in algorithm forms and wavelength combinations, for remotely assessing the shoot dry weight (SDW) as well as chlorophyll a (Chla), chlorophyll b (Chlb), and chlorophyll a+b (Chlt) content of two wheat genotypes exposed to three salinity levels. Stepwise multiple linear regression (SMLR) was used to extract the most influential indices within each spectral reflectance index (SRI) type. Linear regression based on influential indices was applied to predict plant variables in distinct conditions (genotypes, salinity levels, and seasons). The results show that salinity levels, genotypes, and their interaction had significant effects (p ≤ 0.05 and 0.01) on all plant variables and nearly all indices. Almost all indices within each SRI type performed favorably in estimating the plant variables under both salinity levels (6.0 and 12.0 dS m−1) and for the salt-sensitive genotype Sakha 61. The most effective indices extracted from each SRI type by SMLR explained 60%–81% of the total variability in four plant variables. The various predictive models provided a more accurate estimation of Chla and Chlt content than of SDW and Chlb under both salinity levels. They also provided a more accurate estimation of SDW than of Chl content for salt-tolerant genotype Sakha 93, exhibited strong performance for predicting the four variables for Sakha 61, and failed to predict any variables under control and Chlb for Sakha 93. The overall results indicate that the simple form of indices can be used in practice to remotely assess the growth and chlorophyll content of distinct wheat genotypes under saline field conditions.

scholarly journals Effect of waste water treated with TiO2 nanoparticles on early seedling growth of Zea mays L.

2017 ◽  
Vol 8 (3) ◽  
pp. 424-431 ◽  
Author(s):  
Sonila Yaqoob ◽  
Faizan Ullah ◽  
Sultan Mehmood ◽  
Tariq Mahmood ◽  
Mohib Ullah ◽  
...  
Keyword(s):  
Waste Water ◽  
Seedling Growth ◽  
Dry Weight ◽  
Fresh Weight ◽  
Nano Tio2 ◽  
Shoot Dry Weight ◽  
Root Area ◽  
Early Seedling Growth ◽  
Early Seedling

Abstract The present investigation was to determine the effect of nano-TiO2 (2 to 6 nm) and waste water on early seedling growth of maize. The suspensions of nano-TiO2 either in deionized water or autoclaved waste water were applied at 100 mg/L, 50 mg/L and 25 mg/L under in vitro conditions. Analyses of waste water showed that it was not suitable for irrigation purposes as it had a higher content of heavy metals (Fe, Mn, Zn, Cd, Cr and Cu) which were above permissible levels for irrigation. The higher concentration of nano-TiO2 (100 mg/L) and waste water significantly inhibited seed germination, seedling growth and caused accumulation of phenolics in maize plants (p &lt; 0.05). The application of nano-TiO2 at 25 mg/L significantly increased shoot fresh weight, shoot dry weight, root fresh weight, root dry weight, root area, chlorophyll a, chlorophyll b and carotenoids content (p &lt; 0.05). The adverse effects of waste water on growth attributes of maize were significantly ameliorated by nano-TiO2 at 25 mg/L (p &lt; 0.05). The treatment of waste water with nano-TiO2 (25 mg/L) is recommended before its utilization for agriculture purposes.

scholarly journals Root and Shoot Growth Periodicity of Kalmia latifolia `Sarah' and Ilex crenata `Compacta'

HortScience ◽  
2004 ◽  
Vol 39 (2) ◽  
pp. 243-247 ◽  
Author(s):  
Amy N. Wright ◽  
Stuart L. Warren ◽  
Frank A. Blazich ◽  
Udo Blum
Keyword(s):  
Root Growth ◽  
Leaf Area ◽  
Root Length ◽  
Dry Weight ◽  
Stem Cuttings ◽  
Kalmia Latifolia ◽  
Shoot Dry Weight ◽  
Root Area ◽  
Mountain Laurel ◽  
Growth Periodicity

The length of time between transplanting and subsequent new root initiation, root growth rates, and root growth periodicity influences the ability of woody ornamentals to survive transplanting and become established in the landscape. Research was conducted to compare root growth of a difficult-to-transplant species, Kalmia latifolia L. (mountain laurel), to that of an easy-to-transplant species, Ilex crenata Thunb. (Japanese holly), over the course of 1 year. Micropropagated liners of `Sarah' mountain laurel and rooted stem cuttings of `Compacta' holly were potted in 3-L containers. Plants were grown in a greenhouse from May to September, at which time they were moved outside to a gravel pad, where they remained until the following May. Destructive plant harvests were conducted every 2 to 4 weeks for 1 year. At each harvest, leaf area, shoot dry weight (stems and leaves), root length, root area, and root dry weight were determined. Throughout the experiment, shoot dry weight and leaf area were similar for the two species. New root growth of `Compacta' holly and `Sarah' mountain laurel was measurable 15 and 30 days after potting, respectively. Root length and root area of `Sarah' mountain laurel increased during May through December but decreased during January through May. Root length and root area of `Compacta' holly increased linearly throughout the course of the experiment. Final root: shoot ratio of `Sarah' mountain laurel was one-ninth that of `Compacta' holly. Results suggest that poor transplant performance of mountain laurel in the landscape may be related to its slow rate of root growth.

scholarly journals The influence of genotype and osmotic stress on germination and seedling of maize

2014 ◽  
Vol 30 (2) ◽  
pp. 357-366 ◽  
Author(s):  
V. Mandic ◽  
Z. Bijelic ◽  
V. Krnjaja ◽  
Z. Tomic ◽  
A. Simic ◽  
...  
Keyword(s):  
Osmotic Stress ◽  
Dry Matter ◽  
Dry Weight ◽  
Tolerance Index ◽  
Fresh Weight ◽  
Shoot Dry Weight ◽  
Early Seedling Growth ◽  
Vigor Index ◽  
Early Seedling ◽  
Sterile Plastic

The aim of this research was to estimate the influence of different NaCl osmotic solutions (0, -0.3 MPa, -0.6 MPa, -0.9 MPa, -1.2 MPa, -1.5 MPa) on seed germination, and early seedling growth in two maize hybrid different maturity groups (ZP 560 - FAO 500 and ZP 666 - FAO 600). Germination was tested in sterile plastic vessels on filter paper moistened with different NaCl solutions, in the dark at 20 ? 1?C, in laboratory. Results of ANOVA indicated that hybrid ZP 666 had significantly higher root length (RL) (6.37 cm), shoot length (ShL) (2.06 cm), shoot fresh weight (ShFW) (43.86 mg), root dry weight (RDW) (7.56 mg), shoot dry weight (ShDW) (5.97 mg), seedling vigor index (SVI) (706.55) and dry matter stress tolerance index (DMSI) (55.85%) than hybrid ZP 560 (4.18 cm, 1.14 cm, 32.50 mg, 6.54 mg, 4.15 mg, 457.61 and 48.86%, respectively). Contrary, hybrid ZP 560 had significantly higher relative seedling water content (RSWC) (83.83%) and phytotoxicity of shoot (PhSh) (69.77%) than hybrid ZP 666 (81.16% and 62.51%, respectively). Generally, hybrid ZP 666 had better tolerance to salt stress than hybrid ZP 560. Germination energy (GE), germination (G), RL, ShL, root fresh weight (RFW), ShFW, RDW, ShDW, rate germination index (RGI), SVI, RSWC and DMSI were significantly decreased with the increase in osmotic stress induced by NaCl. Contrary, phytotoxicity of root (PhR) and PhSh significantly increased with the increase in osmotic stress.

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