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Wyszukujesz frazę "Dasgan, H.Y." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Does silicon increase the tolerance of a sensitive pepper genotype to salt stress?
Autorzy:
Altuntas, O.
Dasgan, H.Y.
Akhoundnejad, Y.
Kutsal, I.K.
Powiązania:
https://bibliotekanauki.pl/articles/12711848.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
We evaluated the growth performance, ion regulation, osmotic potential, and chlorophyll content of two pepper (Capsicum annuum) genotypes with different salinity tolerance levels (Karaisali is tolerant and Demre is sensitive to salinity) under saline conditions with the application of silicon (Si). Plants were grown in pots filled with vermiculite in control or saline conditions [150 mM sodium chloride (NaCl)] with or without 2 mM Si from potassium silicate for 60 days after sowing. Better growth effects due to Si application were observed in the sensitive pepper Demre than in Karaisali, particularly, the root and fruit growth were remarkably enhanced in Demre. Furthermore, Si application reduced sodium (Na) and chloride (Cl) concentrations and increased potassium (K) and calcium (Ca) concentrations in the leaves and roots. The reduction in Na concentration in the leaves due to Si application was 9% and 2% in Demre and Karaisali, respectively. Under saline conditions, the increase in K concentration due to Si application in the leaves was 11% and 14% in Demre and Karaisali, respectively. In addition, Si application resulted in an increase in K/Na ratios in the leaves by 22% and 17% in Demre and Karaisali, respectively, in the presence of 150 mM NaCl. The increase in Ca concentration in the roots due to Si application was 55% in Demre compared with only 9% in Karaisali. The addition of NaCl decreased the chlorophyll concentration in both the genotypes, but Si application increased it. This increase in chlorophyll concentration was higher in Demre than in Karaisali. Si application allowed both the genotypes to maintain higher osmotic potentials than those in untreated plants. As a result, it may be claimed that under salt stress, Si application has a more alleviative effect on the susceptible pepper genotypes (Demre) than on the tolerant one (Karaisali). This information could be useful for the practical application of Si under saline conditions.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 2; 87-96
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Drought induced physiological and biochemical responses in Solanum lycopersicum genotypes differing to tolerance
Autorzy:
Kusvuran, S.
Dasgan, H.Y.
Powiązania:
https://bibliotekanauki.pl/articles/11805238.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
Drought stress is one of the most serious abiotic stresses that cause reduction in plant growth, development and yield in many parts of the world. The plants have developed different morphological, physiological and biochemical mechanisms to withstand drought stress. The present study investigated different levels (S1: 100% of field capacity – Control; S2: 50% of field capacity –moderate stress; S3: 0% of field capacitysevere stress) of drought stress on oxidative damages and variations in antioxidants in the two tomato genotypes Tom-163 (drought-sensitive), Tom-143 (drought-tolerant) to elucidate the antioxidative protective mechanism governing differential drought tolerance. The shoot fresh weight, shoot height, leaf number and area, relative water content (RWC) were reduced with different level of drought stress. However, this reduction clearly occurred in Tom-163 (sensitive). Antioxidative enzyme activities such as superoxide dismutase, catalase, ascorbate peroxidase and glutation reductase had a greater increase in tolerant genotypes (Tom-143) than in sensitive ones (Tom-163). The level of lipid peroxidation was measured by estimating malondialdehyde content. Lipid peroxidation increased with rising drought level in both genotypes although Tom-143 was the least affected when compared with the Tom-163. Total phenolic and flavonoid contents increased in tomato genotypes under S2 and S3 conditions. The highest total phenolic and flavonoid contents were attained in Tom-143 subjected to S3 treatment. These results indicated that antioxidant defense systems, osmolytes and secondary metabolites play important roles in tomato during drought stress.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2017, 16, 6; 19-27
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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