Comparative physiology of salt and water stress pdf

Posted on Wednesday, March 17, 2021 12:02:13 PM Posted by Morrdyceli - 17.03.2021 and pdf, management pdf 3 Comments

comparative physiology of salt and water stress pdf

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Responses of Organisms to Water Stress. Abiotic stress limits crop productivity [ 1 ], and plays a major role in determining the distribution of plant species across different types of environments.

Morpho-physiological and proteomic responses to water stress in two contrasting tobacco varieties

Morphological, anatomical and physiological plasticity was examined for Cakile arabica from three different sites at the coastal part of the Arabian Gulf near Ad Dammam city in the eastern region of Saudi Arabia. Morphological investigation showed that the size and number of lobes of the leaves are increased in sites I which have high salt stress. Also anatomical investigation using a light microscope showed that the plant is adaptive for salt stress by increasing the thickening of the cuticle or epidermis layer and increase in the area of vascular bundles. Physiological studies showed that plant growing under high salt stress is characterized by increase content of electrical conductivity and increase in chlorophyll a, b, carotenoids and proline content in the plant tissues. This can be explained as an osmotic adjustment mechanism for the investigated species growing under high salinity stress.

Salt and alkali stress reduced seedling emergence rate, relative biomass, and chlorophyll content, however, the REC and MDA content increased. Salt and alkali stress increased markedly superoxide dismutase SOD activity. Peroxidase POD activity increased first and then decreased as the increase of salt and alkali stress. The proline content of L24 was higher than that of X45 under salt and alkali stress. However, glycine betaine and soluble sugar content of L24 was lower than that of X45 under alkali stress. In conclusion, salt tolerant cotton cultivars may possess a superior protection effect by increasing antioxidant enzymes activity under salt and alkali stress. Xinjiang is a region with the widest distribution of saline soil, the heaviest salt accumulation, and the most salinization types in China.

Comparative physiology of salt and water stress.

Metrics details. Chenopodium quinoa Willd. With increasing salinity levels, leaf superoxide dismutase SOD activity and lipid peroxidation generally increased, but catalase CAT and peroxidase POD activities showed non-linear patterns. As a global issue, soil salinisation limits agricultural production because of its detrimental effect on seed germination, plant growth and crop yield [ 1 , 2 ]. In order to tolerate soil salinization conditions, besides anatomical and morphological plasticity, plants have evolved multiple physiological mechanisms, e. Being a physiologically and genetically complex trait, salinity tolerance is associated with multiple subtraits e. Quinoa Chenopodium quinoa Willd.

Effects of water, salt and nitrogen stress on sunflower Helianthus annuus L. Experiments in soil columns were conducted to evaluate the single and interactive effects of water, salt and nitrogen stress at different sunflower Helianthus annuus L. The results indicated that the S 1 treatments increased the duration of the seedling stages by Similarly, water deficit significantly retarded anthesis and prolonged the total growth period. The CSAIs in different treatments showed that soil salinity was the main limiting factor for sunflower vegetative growth from seeding to bud SS 1 , whereas water stress dominated the development from bud to flowering SS 2 and flowering to maturity SS 3. Although statistically non-significant, nitrogen stress was intensified after bud initiation and the CSAI in W 1 S 0 N 0 treatment was


Plant responses to salt and water stress have much in com- mon. Salinity reduces the ability of plants to take up water, and this quickly causes reductions in growth.


Salinity and Water Stress

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: X Corpus ID: Comparative physiology of salt and water stress.

Salinity and water stress limit crop productivity worldwide and generate substantial economic losses each year, yet innovative research on crop and natural resource management can reveal cost-effective ways in which farmers can increase both their productivity and their income. Presenting recent research findings on salt stress, water stress and stress-adapted plants, this book offers insights into new strategies for increasing the efficiency of crops under stressful environments. The strategies are based on conventional breeding and advanced molecular techniques used by plant physiologists, and are discussed using specific case studies to illustrate their potential.

Comparative Water Relations of Two Contrasting Date Palm Genotypes under Salinity

Salinity and water stress limit crop productivity worldwide and generate substantial economic losses each year, yet innovative research on crop and natural resource management can reveal cost-effective ways in which farmers can increase both their productivity and their income. Presenting recent research findings on salt stress, water stress and stress-adapted plants, this book offers insights into new strategies for increasing the efficiency of crops under stressful environments. The strategies are based on conventional breeding and advanced molecular techniques used by plant physiologists, and are discussed using specific case studies to illustrate their potential.

Box 36, Muscat, Oman. Box 34, Muscat, Oman. Salinity is a global agricultural problem, resulting in a significant reduction in the plantation areas and the crop yields, especially in arid and semiarid regions. The date palm is relatively salt-tolerant plant species, although the nature of salt tolerance is poorly understood. Various physiological parameters, plant-water relations, and anatomical characteristics were analyzed. The results revealed that although salinity has negatively affected both cultivars, Umsila exhibited more stable photosynthesis than Zabad as reflected by the quantum yield Qy and the stomatal conductance GS. Similarly, Umsila showed a more dynamic root system and efficient water relations than Zabad as demonstrated by the leaf water potential LWP and relative water content RWC during salinity.

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  • Abstract Plant responses to salt and water stress have much in common. Salinity reduces the ability of plants to take up water, and this quickly causes reductions in growth rate, along with a suite Download PDF. back. Ameen W. - 19.03.2021 at 17:36
  • PDF | Plant responses to salt and water stress have much in common. Salinity reduces the ability of plants to take up water, and this quickly. Nerida S. - 22.03.2021 at 06:36
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