Evaluation of gerbera cultivars under open field, plastic house and glasshouse conditions [bud abortion; blind plants]
1989
Muammar, R.Y.
A study was conducted in two successive seasons to evaluate the performance of eight Gerbera jamesonii cultivars for yield, flower quality adaptability, vase life, bud abortion, blind plants; earliness and number of days from visible bud to bloom under open field and plastic and glasshouse conditions. The results showed that in 1986/87, Marleen did not stand open field conditions during autumn while Victoria , Prestige and Cleopetra did, especially Cleopetra, thus it could recommended for fall production. However, Victoria stood glass and plastic houses conditions better than Marleen and was productive: thus it could be recommended for fall planting only under glasshouse conditions. For longer flowering stems Victoria, Marleen, Prestige and Cleopetra were recommended in plastic and glasshouses. To get early flowers, the cultivars Victoria and Prestige were recommended. Results of evaluation of the cultivars Terra Visa, Terra Sun, Terra Nivalis and Queen Rebecca in 1987/88 showed: The four cultivars were recommended for heated glass or plastic house, as the most sensitive to low temperature was Queen Rebecca. Temperature during the growth period influenced flower quality and heated glasshouse conditions brought longer stems, larger flowers and thicker stems. For early production in fall Terra Visa was recommended: however, Queen Rebecca was the latest, while Terra Nivalis and Terra Sun were intermediate. For winter production heated glass and plastic houses were preferable over unheated, since they shortened the period for visible bud to bloom. Queen Rebecca was notorious for blind plants and aborted buds. Vase life period depended on the temperature during growth and harvest. Terra Visa has the longest vase life under the conditions of the study
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