Abstract
Background and objectiveResearches on compost introduced the evidence of its benefits to plant productivity and soil fertility. These advantages are noticed in forms of improving soil water holding capacity and nutrient availability for plants. These changes can also improve plants’ capability to overcome salinity stress conditions. The application of osmo-protectant materials (proline and trehalose) and/or compost addition enhances plant antioxidative defense system against stress conditions. This experiment conducted to study the effect of spraying quinoa plants with proline and trehalose with and without soil compost addition under salinity stress on some morphological and physiological aspects.Materials and methodsQuinoa plant was grown with or without compost in the soil and foliar sprayed with proline or trehalose under salt irrigation. Plant samples were taken after 60 days from sowing and at the end of the experiment for growth, yield, and biochemical measurements.ResultsGrowth and yield measurements were decreased with salinity stress. High levels of both proline and trehalose recorded the highest values of total soluble sugars, proline, and free amino acids in both unstressed or salinity stressed plants with or without compost addition. The use of compost in soil for cultivating quinoa plants with either proline or trehalose treatments increased growth parameters, photosynthetic pigments, and yield attributes. In addition, these treatments improved the accumulation of some organic solutes in leaves and promoted antioxidant enzyme activities.ConclusionCompost addition to soil with spraying proline or trehalose improved quinoa growth and yield and produced seed nutritional value.
Highlights
A large number of people around the world about 780 million persons are located in the undeveloped regions according to the FAO (2014)
Growth and yield measurements were decreased with salinity stress
Plants grown in the presence of compost showed significant (P < 0.05) enhancement in its growth compared to the corresponding control
Summary
A large number of people around the world about 780 million persons are located in the undeveloped regions according to the FAO (2014). During the last decade, quinoa played an important role in food security, focusing global attention on nutrition and poverty eradication event by the United Nations declaring the year 2013 as its international year (FAO 2013). It has been used as a staple food crop for thousands of years (Martinez et al 2015). The application of osmo-protectant materials (proline and trehalose) and/or compost addition enhances plant antioxidative defense system against stress conditions This experiment conducted to study the effect of spraying quinoa plants with proline and trehalose with and without soil compost addition under salinity stress on some morphological and physiological aspects
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