Although bermudagrass can germinate in daytime temperatures as low as 20 ☌ and as high as 45 ☌, optimal germination has been reported as a daytime/night temperature combination of 30/20 ☌ ( Ahring and Todd, 1978). Dating back to the early 20th century, alternating temperatures of 35 and 22 ☌ have been used to germinate bermudagrass seed ( Bryan, 1918 Harrington, 1923). Likewise, germination of SB is also favored when environmental conditions include daytime temperatures of 30 to 35 ☌ ( Sandlin et al., 2006). Bermudagrass can germinate and grow in a wide range of environments from the transition zone to tropical climates ( Duble, 1989), and improved SB cultivars continue to be planted across temperate areas in the United States and throughout the world.īermudagrass is a warm-season species and optimal growth and development occur during the summer months when favorable temperatures are present. With the new focus on improved SB cultivars, germination characteristics have become increasingly important to improve stand establishment and overall turf quality. As the turfgrass quality of several SB cultivars have reached the level of vegetative industry standards ( Morris, 2002), the use of SB has increased. In recent years, many improved seeded bermudagrass cultivars have become commercially available. ![]() Keywords: AOSA Cynodon dactylon growth chamber ‘Riviera’ exhibited the lowest overall germination, whereas ‘Transcontinental’ and ‘Arizona Common’ exhibited the highest. Germination percentage was greatest with either the 35/25 ☌ or the 30/20 ☌ temperature regimes. ![]() However, both temperature regime and cultivar were significant factors. Overall, commercial seedcoating did not significantly affect SB germination. Cumulative count intervals occurred on Day 7, Day 14, and Day 21. The study compared two seed lots of coated and uncoated samples of the five cultivars for germination response to six temperature regimes. ![]() ‘Princess-77’, ‘Riviera’, ‘Transcontinental’, and ‘Yukon’ were selected for a series of 21-day germination studies with ‘Arizona Common’ included as a standard cultivar. The objectives of this study were to determine commercial coating effects on germination, compare germination among cultivars, and evaluate the effect of temperature on germination of five bermudagrass cultivars. However, germination of some of the new cultivars is not ideal. Currently, most improved seeded cultivars are marketed with a seedcoating unique to each seed company. Improved SB cultivars offer ease of establishment and convenience of storage while providing an economic advantage over vegetative propagation. As turfgrass quality of seeded bermudagrass (SB) cultivars has increased over the past 20 years, so has their use.
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