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An experiment was initiated to evaluate the effects of previously recommended seed treatments for baldcypress [ Taxodium distichum  (L.) Rich.] or pondcypress [ Taxodium distichum  (L.) Rich. var.  imbricarium  (Nutt.) Croom] on Montezuma cypress [ Taxodium distichum  (L.) Rich. var.  mexicanum  Gordon], and to determine which, if any, provided optimum germination. Factorial combinations of seed treatments and stratification (2 °C for 0, 45, or 90 d) were applied to seeds of Montezuma cypress. Treatments included: 1) 90% ethanol 5 min soak, 2) ethyl ether 5 min soak, 3) 100 mg·L -1  citric acid 48 h soak, 4) mechanical scarification, 5) five hot water baths (42 °C) allowing the water to cool to room temperature between baths, and 6) a non-treated control. Three more seed treatments consisted of water soaks at room temperature (25 °C) for 0, 45, or 90 d. Seeds were germinated on moist filter paper in a growth chamber with a 12-h day/night photoperiod at a constant 25 °C. Data was collected daily for 14 d and then weekly for the following 4 wks. Radicle elongation of 1 cm was considered germination. Without stratification, 100 mg·L -1  citric acid and the hot water bath treatments were significantly different from other treatments by 7 d, though not from each other, with a mean cumulative germination of 15.6% and 12.2%, respectively. By 14 d, the 100 mg·L -1  citric acid treatment differed only from the ethyl ether wash attaining 28.9% and 14.4% germination, respectively. There were no other statistically significant differences observed among any other treatments without stratification. Germination percentages were low,&lt;30%, without stratification. Effects of additional stratification will also be discussed.

Effects of Seed Coat Treatment and Stratification on the Germination Rate of Montezuma Cypress