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This study was conducted to compare in vitro salt tolerances during germination and seedling growth of 7 turfgrass species those have been commonly used in home garden, park, athletic field, and golf courses in Korea. Seeds of 7 turfgrasses were germinated on MIS media solidified with agar containing 0, 0.01, 0.1, 0.5, 1, or 2% NaCl. Ranks of overall salt tolerance among species were somewhat consistent in germination rate, shoot length, root length, fresh weight and dry weight of seedling. The germination rate of Z. koreana tended to increase at the NaCl concentration between 0 and 0.5%, and then decrease to 4% as the level increased to 1% NaCl. The germination of creeping bentgrass, bermudagrass, Kentucky bluegrass, and tall fescue rapidly declined with increased concentration of NaCl, and then hardly germinated at 2% NaCl. Also, seedling growth of Z. koreana and Korean lawngrass were better than the other grasses in agar medium containing 1 to 2% NaCl. Z. koreana was the most salt tolerant species during germination and seedling growth in agar medium containing NaCl. Korean lawngrass was also shown to be salt tolerant, whereas creeping bentgrass and tall fescue were sensitive. Korean lawngrasses were more salt tolerant than the other grasses, and Z. koreana was more tolerant to sodium chloride than Korean lawngrass which is already known to be highly salt tolerant.
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