Nutrient Concentration of African Horned Cucumber (Cucumis metuliferus L) Fruit under Different Soil Types, Environments, and Varying Irrigation Water Levels

Horticulturae

Melvin Nyathi¹  MdungaziK Maluleke²  ShadungJ Moja³  DavidM Modise⁴ 

[1] Agricultural Research Council, Tshwane 0002, South Africa;College of Agriculture and Environmental Sciences, Department of Environmental Sciences, University of South Africa, Tshwane 0002, South Africa;Council of Geosciences, Water and Environment Business Unit: Geological Resource Division, Silverton, Tshwane 0002, South Africa;Faculty of Natural and Agricultural Sciences, School of Agricultural Sciences, North-West University, Potchefstroom 2520, South Africa;

关键词: biochemical constituents;    ꞵ-carotene;    vitamins;    micro-nutrients;    growing environments;   

DOI  :  10.3390/horticulturae7040076

来源: DOAJ

【 摘 要 】

The nutrient concentration of most crops depends on factors such as amount of water, growing environment, sunlight, and soil types. However, the factors influencing nutrient concentration of African horned cucumber fruit are not yet known. The objective of the study was to determine the effect of different water stress levels, soil types, and growing environments on the nutrient concentration of African horned cucumber fruit. Freeze-dried fruit samples were used in the quantification of ꞵ-carotene and total soluble sugars. The results demonstrated that plants grown under the shade net, combined with severe water stress level and loamy soil, had increased total soluble sugars (from 8 to 16 ˚Brix). Under the shade-net environment, the combination of moderate water stress level and loamy soil resulted in increased crude protein content (from 6.22 to 6.34% ˚Brix). In addition, the severe water stress treatment combined with loamy soil, under greenhouse conditions, resulted in increased ꞵ-carotene content (from 1.5 to 1.7 mg 100 g⁻¹ DW). The results showed that African horned cucumber fruits are nutrient-dense when grown under moderate water stress treatment on the loamy or sandy loam substrate in the shade-net and open-field environments.

【 授权许可】

Unknown