Effect of water stress on plant growth in Atriplex hortensis L (original) (raw)
Investigations on the effects of water-deficit stress conditions on the physiological characteristics of plants may provide a means to understand the basis of drought resistance. Atriplex spp. have been used as a resource for the rehabilitation of degraded land. The responses of two varieties of Atriplex hortensis [green orach (A. hortensis L. var. purpurea) and red orach (A. hortensis L. var. rubra)] to four levels of soil moisture (100, 80, 60, or 40% of field capacity) were investigated. The experiment was conducted under greenhouse conditions. Growth declined progressively with the application of increasing water stress. Water-stressed plants exhibited significant reductions in height and biomass. Water-deficit stress also caused a significant decline in total leaf area, but had no significant effect on leaf water content in red orach. Reductions in soil water content caused reductions in the relative water content (RWC) of leaves in both varieties of A. hortensis, but the decre...
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