Resumo

HERNANDEZ-HERNANDEZ, F. et al. Anatomical differences and use of pulse solutions in two rose (Rosa sp.) cultivars. Rev. Chapingo Ser.Hortic [online]. 2009, vol.15, n.spe, pp.11-16. ISSN 2007-4034.

The aim of this research was to evaluate the susceptibility of two roses cultivars ('Grand Gala' and 'Vega') to water stress, the flower stems were pretreated with pulse solutions (4-hexylresorcinol, putrescine and water). In the other hand the leaf and stem anatomy were studied in order to know their relation with dry period. The results showed that the 4-hexylresorcinol solution reduced water stress in both cultivars, maintaining the quality characteristics. It was observed higher susceptibility to dry period in 'Vega' cultivar. The number of epidermal cells and stomata index and fresh weight loss in leaves of 'Grand Gala' leaves were significantly higher. In both cultivars, the stomata in leaves were hypoestomatics of paracitic type.

Palavras-chave : Grand Gala cultivar; Vega cultivar; 4-hexylresorcinol; dry period.

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