Effect of Saline Water Stress in the Presence of Silicon Foliar Application on Growth, Productivity and Chemical Constituents of Chia (Salvia hispanica L.) under Egyptian Conditions

Abstract

The pot experiment was carried out during two successive seasons (2016/2017 & 2017/2018) to study the effect of five levels of salinity and three levels of silicon (Si), as a foliar-spray application as well as their combinations on growth, productivity and chemical constituents of chia (Salvia hispanica L.) plants. Results showed that there was a negative relationship between vegetative growth measurements i.e., plant height, fresh weight and dry weight, flowering growth and yield parameters i.e., main inflorescence height, main inflorescence weight, inflorescences weight, seeds weights, weight of 1000 seeds and calculated seeds yield /m2 and root growth measurements i.e. root length, root weight and root diameter values and salinity treatments in both seasons. Hence, as the concentrations of salinity increased, the values of these parameters decreased to reach the maximum decreasing at the high concentration (4.69 dS m-1). Therefore, the combination treatment between 0.68 dS m-1 salinity concentration and 2000 ppm silicon scored the highest values of these parameters, in the 1st and 2nd seasons. Meanwhile, the maximum values of N, P and K contents were recorded by the combination treatment between 0.68 dS m-1 salinity concentration and 2000 ppm silicon in both seasons. Whereas, the highest values of free proline, sodium and chloride content were gained by the high concentration of salinity 4.96 dS m-1 especially those received silicon at 0 ppm in both seasons. Conclusively, the highest growth, productivity and chemical constituents of chia (Salvia hispanica L.) plant, it is preferable to grow the plants under saline water irrigation concentration at (0.68 dS m-1) and spray with silicon at 2000 ppm.

Effect of foliar organic fertilization and some biostimulants on growth and productivity of chia (Salvia hispanica L.) plant.

“…Silva et al [52] studied the quantification of fatty acids in chia seed oils obtained with different solvents and reported αlinolenic (61.48-62.94%), linoleic (18.1-19.8%), oleic (6.92-6.87%), palmitic (9.13-9.95%), and stearic (2.92-2.99%). Moghith [53] identified 23 compounds in the fixed oil composition of chia, with the main components being α-linolenic acid (54.97-63.22%), linoleic acid (15.82-21.36%), oleic acid (6.19-15.86%), and palmitic acid (6.30-8.15%). Mohamed and Ghatas [40] reported that the main component in chia was α-linolenic acid (37.26-39.73%).It is worthy note that the quality of chia plant represented by crude fatty acids content improves when treated with bio-stimulants compared to the recommended mineral NPK fertilization [53].…”

Effectiveness of Various Potassium Sources on Vegetative Growth, Flowering, Essential Oil Productivity and Some Chemical Constituents of Yarrow (Achillea Millefolium L.) Plant

“…(2009) on of oregano plants, Jabeen and Ahmad (2011) on sunflower and safflower plants, Matin et al (2015) on Narcissus tazetta plants, Basiouny (2020) on Taxoduim disticum plant and Swietenia mahagoni plant, Ghatas and Mohamed (2020) demonstrated that, monopotassium phosphate with EM or phosphorein were the best for improving growth parameters of Oenothera biennis L. plant and Moghith et al (2020) reported that the maximum growth parameters of the chia (Salvia hispanica L.) plant have been shown to be preferred for cultivation under saline water irrigation at (0.68 dSm -1 ) and potassium silicate spray at 2000 ppm.…”

“…Ghatas and Mohamed (2020) mentioned that, monopotassium phosphate with EM or phosphorein were the best for improving chemical constituents of Oenothera biennis L. plant. Moghith et al (2020) It was shown that the combination therapy reported maximum N, P and K content values of the chia (Salvia hispanica L.) plant between 0.68 dSm -1 salinity concentration and 2000 ppm potassium silicate.…”

Exogenous Application of Gamma Aminobutyric Acid Improves the Morpho-Physiological and Biochemical Attributes in Lavandula dentata L. under Salinity Stress

“…Additionally, Wang et al [7] reported that plant height, leaf freshness, and dry weight of maize seedlings were curtailed under salinity stress (150 mM and 300 mM NaCl concentration). Furthermore, Moghith et al [3] argued that elevating salinity levels lowered the vegetative growth of Salvia hispanica L. plants. In a study conducted in Cyprus, the authors discovered that the plant height of Lavandula angustifolia Mill.…”

“…Generally, the influences of salinity on plants are exhibited by a severe-to-moderate contraction in plant development and yield [2][3][4][5][6]. Plants can adapt to the adverse effects of salinity via both enzymatic and nonenzymatic antioxidant protective mechanisms to eliminate provoked ROS to protect plants against unfavorable influences of salinity.…”