In vitro conservation of ornamental plants

Abstract

The market of flowers and ornamental plants is dependent on the diversification of species and the availability of high quality propagation materials. Actually, in vitro culture techniques performance a prominent role in the multiplication and maintenance of commercially propagated ornamental plant species, and are promising for the production of thousands of high quality plants in relatively short term. In addition, when market demand for a particular species is low or zero in a specific period of the year, in vitro culture techniques allow the conservation of cultures under aseptic conditions, by Slow Growth Storage (SGS), from a few weeks to one year (or more), without affecting their viability and potential regrowth. This can be achieved by modifying the constitution of the culture medium and the maintenance conditions of in vitro cultures. Obviously, the success of the technique depends on greatly on the physiological characteristics of the species to be conserved, as well. Once a SGS protocol is optimized, the expenses labor, the possibility of contamination and the probability of somaclonal variation can be reduced markedly.

Development of Cryopreservation Technique for Meristems of Syringa vulgaris L. Cultivars

“…However, the work on the protection and preservation of plant genetic resources was mainly focused on food crops and endangered species [7]. Scientists are calling for a coordinated international effort to preserve not only rare, endangered, extinct and economically valuable but also ornamental plant species [8,9].…”

Evaluation of Culture Media for In Vitro Conservation of Gladiolus Cultivars

“…Considering the potential risk of growth regulator application over a long period, the use of osmotic pressure method and modification of nutrient and culture environment in single or in combinations were preferred in preserving the plant under in vitro conditions (D. P. C. da Silva, Ozudogru, dos Reis, & Lambardi, 2018). Higher sugar concentration in the media was usually used as an osmoregulator to increase osmotic pressure and limit the soluble ions and water.…”

Micropropagation of Hardy Hibiscus (Hibiscus Moscheutos L.)

“…Seed propagation is rarely used, because plants do not retain all the characteristics of the original variety, and plants of interspecific hybrids may not form seeds at all. Moreover, breeding for sterility of Hibiscus x moscheutos L. is currently underway, since sterile hibiscus plants have a longer flowering period, and unsightly fruits develop and remain on the stems at the end of the flowering season, which significantly reduces the decorative value [7,8]. Reproduction by dividing the bush and green cuttings have difficulties in terms of the need to grow large numbers of mother plants, as well as the relatively low rooting rate of cuttings.…”