Document Type : Full Paper
M. Sc. Student , Faculty Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Associate Professor, Faculty Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran
In order to investigate the effect of various concentrations of nano-chelated calcium (0, 2 and 3 g/l) on growth, morphological parameters and vase life of three gerbera cultivars in hydroponic system, a factorial experiment based on compelitly randomized design with three replications was carried out. The results showed that nano-chelated calcium treatment increases the post-harvest vase life of gerbera cut flower. The highest vase life (10 days) belonged in 3 l/g of nano-chelated calcium in Intense cultivar and the lowest vase life (5 days) was observed in control Amlet cultivar. By nano - chelated calcium spraying the calcium content in the treated plants increased compared to the control plants. There was a positive relationship between the application of nano-chelated calcium and increased photosynthetic pigment, relative leaves water content, soluble carbohydrate content and stomata conduction, while there was no positive relationship between nano-chelated calcium and proline. However, in different growth factors, there was no significant difference between two levels of 2 g/l and 3g/l. Therefore 2 g/l nano-chelated calcium treatment before harvesting is recommended to improve the growth conditions as well as to improve the post-harvest survival of gerbera cut flower.