Abstract The experiment was carried out during 2003-2004 in a unit in the research glasshouses of Faculty of Agriculture, Ferdowsi University of Mashad. The design of experiment was factorial based on completely randomized design with twenty- one treatments and four replicates. Three cultivars were included Camarosa, Gaviota and Selva. The pot and tube system were used and the pots were filled with 1) 2peat moss+ 1sand(v/v), 2) sand 100%, 3) perlite 100%, 4) Peat moss 40%+ Perlite 60%, 5) Peat moss 100%, 6) Cocopeat 40% + Perlite 60% and 7) Cocopeat 100%. The temperature were set on 25 ºC day and 15 ºC night. Number of leaves, crowns, runners and inflorescences, petiole length, time of flowering and fruiting, mean weight of fruit, number of fruits and yield per plant, percentage of malformed fruits and soluble solids were recorded for each treatment. The highest number of leaves was in Camarosa in Cocopeat 100%, Peat moss 100%, Cocopeat 40%+ Perlite 60% and Peat moss 40%+ Perlite 60% substrates. In general Gaviota showed the highest petiole length and number of runners where Selva was lowest. Time of flowering was earliest in Selva and latest in Gaviota. Although the interaction between substrate and cultivar was significant, however the time of flowering was earlier in substrates without peat compares those with peat. Selva produced most inflorescences. Time of fruiting was earlier in Camarosa than two other cultivars. Camarosa in Cocopeat 40%+ Perlite 60% produced highest number of fruits and yield per plant. The yield in substrates with peat was higher than substrates without peat. The highest number of malformed fruits was observed in Sand 100% for Camarosa. The soluble solids of fruits were different with different cultivars and different substrates.It looks like that Camarosa in Cocopeat 40%+Perlite 60% is proper for glasshouse production under Pot and tube system.

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