Longevidade pós-colheita de hastes florais e vegetativas de Costaceae

Abstract

This study aimed to evaluate the vase life of floral and vegetative stems of Costaceae and describe their morphological characteristics. To evaluate the vase life of floral and vegetative stems, four and six species were used, respectively. Three cutting stages were established for floral stems. Stems were cut a few days before flower opening at stage 1, upon opening of the first flower(s) (anthesis) at stage 2, and when floral stems showed more than 15 opened flowers at stage 3. However, only two different stages were applied for each species. Floral stems were standardized with 50 cm in length, while vegetative stems were standardized with 70 cm in length. The morphological characteristics determined for floral stems included diameter of the floral stem, length of inflorescence, diameter of inflorescence and fresh mass of floral stem. For vegetative stems, we considered diameter and fresh mass. After the first evaluation, stems were maintained at 22 ºC and 53% of humidity. The total number of post-harvest days (global longevity) in which the quality of floral and vegetative stems was acceptable were evaluated. The highest vase life for floral stems at stage 1 was observed for Costus woodsoni, Costus arabicus x Costus spiralis (Costus Tropicales), and Costus scaber. Hellenia speciosa showed higher vase life at stage 3. H. speciosa showed the highest vase life and C. woodsonii the lowest values for morphological characteristics. The vase life of vegetative stems for the six species was satisfactory. Costus scaber (orange) showed the shortest longevity and Costus arabicus (yellow) longest longevity. Dimerocostus strobilaceus showed the highest values of morphological characteristics, and Costus arabicus (pink) showed lowest values. Based on the results, both floral and vegetative stems of Costaceae can be used for cutting.