scholarly journals ​​The Effects of Gibberellic Acid (GA3) Applications on the Physiological Features of Groundnut (Arachis hypogaea L.) under Different Salt (NaCI) Stress Conditions

2021 ◽  
Author(s):  
E. Erbil
Keyword(s):  
Salt Stress ◽  
Cell Membrane ◽  
Membrane Permeability ◽  
Chlorophyll Content ◽  
Proline Content ◽  
Stress Conditions ◽  
Cell Membrane Permeability ◽  
External Application ◽  
Leaf Chlorophyll Content ◽  
Leaf Chlorophyll

Background: Salinity is one of the most imperative problems of farmers worldwide. Reports are available that the external application of GA3 can reduce harmful effects of salinity. Low concentration and small quantities of GA3, a phytohormone, is essential to hasten the growth and development of plants. The current study was aimed to test the efficiency of GA3 on the impart of salt tolerance in terms of better nutrient uptake under salt stress situation and to determine the effect of external giberellic acid applications on the physiological properties and proline level of peanuts under different salt (NaCl) stress conditions on the degree of resistance to salt stress in peanuts. Methods: Trial was established as split plot design with 3 replications and NC-7 variety was used as a material. The chlorophyll content in leaves, ion (K, Na, Mg, Ca) content, cell membrane permeability were searched in the research. To determine the physiological responses of groundnut in the conditions of Gibberellic asid (GA3), (0, 5, 15 mM) applications under the different salt (Nacl), (0, 25, 50, 100 mM) stress conditions at the Plant Growth Room in the GAP Agricultural Research Institute in Şanlıurfa, Turkey in 2019. The chlorophyll content in leaves, ion (K, Na, Mg, Ca) content, cell membrane permeability were searched in the research. Result: The increasing salt applications decreases the leaf chlorophyll content and leaf ions (K, Mg, Ca) content, in contrast, increased the cell membrane permeability, proline content and sodium concentration were determined. The gibberallic asid applied externally against salt stress were determined to have the positive effects on traits; leaf chlorophyll content, ion (K, Na, Mg, Ca) content, cell membrane permeability, proline content.

Study on Autotoxicity of Aqueous Extracts from Different Parts of Flowering Chinese Cabbage

2013 ◽  
Vol 641-642 ◽  
pp. 962-966 ◽  
Author(s):  
Hou Cheng Liu ◽  
Shi Wei Song ◽  
Ri Yuan Chen ◽  
Guang Wen Sun
Keyword(s):  
Cell Membrane ◽  
Chlorophyll Content ◽  
Chinese Cabbage ◽  
Brassica Campestris ◽  
Cell Membrane Permeability ◽  
Aqueous Extracts ◽  
Leaf Chlorophyll ◽  
Flowering Chinese Cabbage ◽  
Stems And Leaves ◽  
Different Parts

Autotoxicity of aqueous extracts from roots, stems and leaves of flowering Chinese cabbage (Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee) were studied by hydroponic in different concentrations (0.5g/L, 2g/L, 5g/L). The results showed that in solution with aqueous extracts from roots, stems and leaves, the growth of flowering Chinese cabbage were inhibited, leaf chlorophyll content declined, photosynthesis rate were affected, activities of SOD, POD and CAT were changed, MDA concentration increased, thus cell membrane permeability of flowering Chinese cabbage was damaged. The autotoxicity of aqueous extracts in flowering Chinese cabbage increased with the extracts concentration increasing.

Physiological and growth responses of potato cultivars to heat stress

Botany ◽  
2018 ◽  
Vol 96 (12) ◽  
pp. 897-912 ◽  
Author(s):  
Ruimin Tang ◽  
Suyan Niu ◽  
Guodong Zhang ◽  
Guanshui Chen ◽  
Muhammad Haroon ◽  
...  
Keyword(s):  
Heat Stress ◽  
Chlorophyll Content ◽  
Plant Height ◽  
Solanum Tuberosum L ◽  
Potato Cultivars ◽  
Stress Conditions ◽  
Correlated Response ◽  
Growth Responses ◽  
Leaf Chlorophyll Content ◽  
Leaf Chlorophyll

Climate warming is subjecting plants to heat stress, which can affect their physiological processes thereby impacting their growth, development, and productivity. Potato (Solanum tuberosum L.) is a staple food worldwide, but potato crops are very sensitive to heat stress. We have studied the effects of heat stress on the leaf chlorophyll content, plant growth, and tuber yield of 55 commercial potato cultivars in clonal tests under heat-stress conditions [HS; 35 °C (day), 28 °C (night)] and control (non-stress) conditions [CK; 22 °C (day), 18 °C (night)]. The potato cultivars varied in their response to heat stress. Overall, heat stress reduced leaf size, increased the SPAD index values for leaf chlorophyll by up to 65%, and increased plant height by 64%, but severely reduced (by 93%) the mass of the largest tuber. The HS:CK SPAD ratios positively correlated with the HS:CK plant height ratio, mass of the largest tuber under heat stress, and the HS:CK ratio for mass of the largest tuber. Potato cultivars displayed a correlated response to heat stress for their leaf chlorophyll content, plant height, and tuber mass. We have identified the most heat-tolerant and heat-susceptible cultivars for these traits. Under heat-stress conditions, potato cultivars tend not to show as much reduction in tuber mass if the plants have greater increases in leaf chlorophyll content and plant height.

scholarly journals Genetic Analysis of Cadmium Tolerance And Exploring Its Inheritance Nature In Bread Wheat

2021 ◽  
Author(s):  
Hassan A. Awaad ◽  
Ahmed M. Alzohairy ◽  
Amgad M. Morsy ◽  
Ehab S.A. Moustafa ◽  
Elsayed Mansour
Keyword(s):  
Grain Yield ◽  
Leaf Area ◽  
Chlorophyll Content ◽  
Bread Wheat ◽  
Flag Leaf ◽  
Proline Content ◽  
Sensitivity Index ◽  
Leaf Chlorophyll Content ◽  
Cd Tolerance ◽  
Leaf Chlorophyll

Abstract Cadmium (Cd) is a nonessential and extremely toxic element that destructively impacts agricultural production. Accordingly, developing tolerant-Cd as well as low-grain Cd genotypes is considered a promising approach to cope with the pollution problem. The current study aimed at understanding inheritance nature of Cd tolerance and detect Cd-tolerant and low-grain Cd genotypes in bread wheat. Six parents were selected based on their Cd tolerance and were genotyped using triple-RAPD and ISSR markers to investigate their genetic diversity. The selected parents were crossed and the realized F1s were selfed to produce F2 populations and were backcrossed with their own parents to produce BC1 and BC2 populations. Six populations for each cross comprised P1, P2, F1, F2, BC1 and BC2 were evaluated in two adjacent experiments under non-Cd stressed and Cd-stressed conditions. Significant positive relative and standard heterosis were detected for flag leaf area, leaf chlorophyll content, proline content, Cd concentration and grain yield/plant under Cd-stressed condition. Dominance gene effect was more pronounced in controlling the evaluated traits in most cases. F values coupled with F/√H×D ratio were positive for Cd concentration and Cd sensitivity index in the three crosses under both conditions. Heritability estimates from offspring regression were high (< 50%) for flag leaf area, leaf chlorophyll content, proline content, Cd concentration while, moderately low for grain yield/plant and Cd sensitivity index. Prediction results revealed to high transgressive segregates and exceeding F1 with best-inbred line (P max) that have all favorable alleles were obtained from 3rd cross for flag leaf area, low Cd concentration and Cd sensitivity index under Cd-stressed conditions.

Sarcolemmal permeability changes during early myocardial anoxia

1978 ◽  
Vol 36 (2) ◽  
pp. 642-643
Author(s):  
M. Ashraf ◽  
L. Landa ◽  
L. Nimmo ◽  
C. M. Bloor
Keyword(s):  
Cell Membrane ◽  
Membrane Permeability ◽  
Coronary Artery Occlusion ◽  
Artery Occlusion ◽  
Cell Membrane Permeability ◽  
Enzyme Release ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Sarcolemmal Permeability ◽  
Membrane Changes

Following coronary artery occlusion, the myocardial cells lose intracellular enzymes that appear in the serum 3 hrs later. By this time the cells in the ischemic zone have already undergone irreversible changes, and the cell membrane permeability is variably altered in the ischemic cells. At certain stages or intervals the cell membrane changes, allowing release of cytoplasmic enzymes. To correlate the changes in cell membrane permeability with the enzyme release, we used colloidal lanthanum (La+++) as a histological permeability marker in the isolated perfused hearts. The hearts removed from sprague-Dawley rats were perfused with standard Krebs-Henseleit medium gassed with 95% O2 + 5% CO2. The hypoxic medium contained mannitol instead of dextrose and was bubbled with 95% N2 + 5% CO2. The final osmolarity of the medium was 295 M osmol, pH 7. 4.

scholarly journals RIL-StEp: epistasis analysis of rice recombinant inbred lines (RILs) reveals candidate interacting genes that control seed hull color and leaf chlorophyll content

2021 ◽  
Author(s):  
Toshiyuki Sakai ◽  
Akira Abe ◽  
Motoki Shimizu ◽  
Ryohei Terauchi
Keyword(s):  
Chlorophyll Content ◽  
Recombinant Inbred ◽  
Complex Traits ◽  
Genetic Architecture ◽  
Recombinant Inbred Lines ◽  
Inbred Lines ◽  
Gene Interactions ◽  
Leaf Chlorophyll Content ◽  
Leaf Chlorophyll ◽  
Seed Hull

Abstract Characterizing epistatic gene interactions is fundamental for understanding the genetic architecture of complex traits. However, due to the large number of potential gene combinations, detecting epistatic gene interactions is computationally demanding. A simple, easy-to-perform method for sensitive detection of epistasis is required. Due to their homozygous nature, use of recombinant inbred lines (RILs) excludes the dominance effect of alleles and interactions involving heterozygous genotypes, thereby allowing detection of epistasis in a simple and interpretable model. Here, we present an approach called RIL-StEp (recombinant inbred lines stepwise epistasis detection) to detect epistasis using single nucleotide polymorphisms in the genome. We applied the method to reveal epistasis affecting rice (Oryza sativa) seed hull color and leaf chlorophyll content and successfully identified pairs of genomic regions that presumably control these phenotypes. This method has the potential to improve our understanding of the genetic architecture of various traits of crops and other organisms.

Variability of Leaf Chlorophyll Content in a Population of Sassafras

1990 ◽  
Vol 117 (2) ◽  
pp. 167 ◽  
Author(s):  
Amrita G. de Soyza ◽  
Dwight T. Kincaid ◽  
Carlos R. Ramirez
Keyword(s):  
Chlorophyll Content ◽  
Leaf Chlorophyll Content ◽  
Leaf Chlorophyll
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