573 PB 044 SEED PROPAGATION OF SOUTHERN SEAOATS IN PEAT-BASED SOILLESS MEDIA

in HortScience
Authors:
Gary R. BachmanDepartment of Horticulture, Clemson University. Clemson. SC 29634-0375

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Ted WhitwellDepartment of Horticulture, Clemson University. Clemson. SC 29634-0375

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Southern seaoats (Uniola particulata) are difficult to propagate from seed due to low seed numbers produced and cold dormancy effects. To efficiently produce southern seaoats in the nursery industry the dormancy must be effectively broken to assure quick and even germination. 24 hr soaks in gibberillic acid (100 and 500 ppm) or scarification of the seed coat combined with GA soaks were compared. Seeds were planted in 50/50 peat/perlite medium 2.5 cm deep. 21 DAT both the 100 and 500 ppm GA soaks had higher germination rates. The 100 ppm GA was determined to he most effective (56% germination) with the seedlings being 3 cm in length. The 500 ppm treated seeds were 6 cm in length hut twisted from the GA causing excessive cell elongation.

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