Comparative study between the physiological role of hydrogen peroxide and salicylic acid in alleviating the harmful effect of low temperature on tomato plants grown under sand-ponic culture.
Journal Title: Scientia Agriculturae - Year 2015, Vol 9, Issue 1
Abstract
Two pot experiments were conducted during two successive winter seasons (2011-2012 ) and (2012-2013) at wire house of National Research Centre, Giza, Egypt to compare the physiological role of hydrogen peroxide (H2O2) and salicylic acid (SA) at (0.5 mM and 1.0 mM) on growth parameters, SPAD values, endogenous growth regulators, antioxidant enzymes, malondialdehyde (MDA), electrolyte leakage (EL) as well as fruits yield quantity and quality(total soluble solids (TSS) and antioxidant activity) of two tomato cultivars (Streenb and Floridat) grown under low temperature conditions. Either H2O2 or SA treatments caused significant increases in growth parameters and SPAD values of two tomato cultivars relative to corresponding control plants. All treatments caused marked increases in endogenous growth regulators (GA3, IAA and ABA).The increases in the amount of ABA under all treatments were more pronounced than IAA and GA3. In addition, all H2O2 and SA treatments caused marked decreases in CAT activity, MDA and EL values accompanied by significant increases in POD and PPO activities relative to control plants. Either H2O2 or SA treatments caused significant increases in fruits yield (g/plant) as well as TSS and antioxidant activity of fruit juices of the two tomato cultivars relative to control plants. It is worthy to mention that H2O2 treatments had more pronounced effect than SA treatments. Moreover, H2O2 treatment at 1.0 mM was the most optimum treatment.
Authors and Affiliations
Salwa A Orabi, Mona G Dawood, S. R Salman
Keywords
Related Articles
- EP ID EP142568
- DOI 10.15192/PSCP.SA.2015.1.9.4959
- Views 173
- Downloads 0
Bioactivity of natural essential oils against Sitophilus oryzae and Ephestia Küehniella
The repellency test of three extracted oils Jatropha curcas, canola and Jojoba Seed oils, were studied against two lepidopterous insect pests Ephestia küehniellaand Sitophilusoryzae. Results showed that, the tested...
Factors Affecting Chemical Properties of Camel Milk
This study was carried out with main objective is to assess factors affecting chemical properties of camel milk. Milk samples were collected from lactated camels of Camel Research Centre farm belonging to the Unive...
An Investigation into the Effectiveness of the Nigerian Agricultural Extension Delivery System in Improving Agricultural Productivity
It was observed that “no country has been able to sustain a rapid transition out of poverty without raising productivity in its agricultural sector”. Predicated on the argument that an effective agricultural extens...
Farm wastes and gypsum management strategies using low quality water to improve degraded soil
To fulfill the food requirements of over growing population and to earn foreign exchange, it is necessary to increase cropping area as well as crop yield. But salinity/sodicity and limited availability of good wate...
Response of Wheat Genotypes to Planting Dates in the Arid Region
To evaluate the genotypic response of wheat crop under arid land conditions, a field experiment was conducted at agronomic research station of King Abdulaziz University, Hada Al-sham, Jeddah Saudi Arabia. Five whea...