Salt tolerant of some native and exotic halophyte
1992
Arunee Yuvaniyama | Somsri Arunin (Land Development Department, Bangkok (Thailand). Soil and water Conservation Div. Soil Salinity Research Section)
Twelve species of exotic and native halophyte species were grown in sand cultured with Arnon's solution at five salinity levels ranging form 10 to 40 ppt in a net house. Survival percentage, fresh and dry weight of shoot and root, water and cations content in plant were recorded. Sporobolus virginicus, both coarse and smooth forms could survive 100 percent at 40 ppt. However native species could survive with normal growth at 10 to 20 ppt NaCl level and survival percentage decreased to 10 at 40 ppt. As salinity level increased, all species tended to have higher Na+(4) contents, lower K+(4) and water contents. Evapotranspiration at high saline solution of the plants at high saline solution was significantly decreased. S. virginicus, Spartina patens and Distichlis spicata excreted salt through leaves, while Sesuvium portulacustrum and Batis maritima showed succulence at higher concentration. S. virginicus S. patens, D. spicata and Batis maritima are designated euhalophyte. S. portulacustrum, Fimbristylis acaminata. Thyropyrum panticum, Jussiaea repens, Fimgristylis ferruinea, Ipomea pes-carpae, and Azima sarmentosa are designated miohalophyte.
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