Articles
APPLICATION OF SORBARODS AND FLORIALITE TO ROOTING OF CRITICALLY ENDANGERED TREE SPECIES TROCHETIOPSIS EBENUS
Article number
616_26
Pages
211 – 214
Language
English
Abstract
Trochetiopsis ebenus (St.
Helena Ebony) is a critically endangered (World Conservation Union, IUCN) tree from St.
Helena, a South Atlantic Ocean island.
The plant grows and multiplies slowly in culture.
Roots produced at Stage III on agar based rooting media were thin and prone to damage whilst transplanting.
From the plants rooted on agar-based media only 32% of the plants established under glasshouse conditions upon transplanting.
Since the aim was to achieve a high rate of survival, a different strategy to achieve high transplantation rate was developed using supporting materials such as Sorbarods and Florialite in Stage III. Plantlets raised on Sorbarods and Florialite showed 73% and 90% survival respectively after 4 weeks.
Plantlets raised on Florialite showed improved quality in comparison to plants grown on agar or Sorbarods.
The implications of methods used are discussed in the context of conservation of endangered tree species, which pose problems in all stages of micropropagation.
Helena Ebony) is a critically endangered (World Conservation Union, IUCN) tree from St.
Helena, a South Atlantic Ocean island.
The plant grows and multiplies slowly in culture.
Roots produced at Stage III on agar based rooting media were thin and prone to damage whilst transplanting.
From the plants rooted on agar-based media only 32% of the plants established under glasshouse conditions upon transplanting.
Since the aim was to achieve a high rate of survival, a different strategy to achieve high transplantation rate was developed using supporting materials such as Sorbarods and Florialite in Stage III. Plantlets raised on Sorbarods and Florialite showed 73% and 90% survival respectively after 4 weeks.
Plantlets raised on Florialite showed improved quality in comparison to plants grown on agar or Sorbarods.
The implications of methods used are discussed in the context of conservation of endangered tree species, which pose problems in all stages of micropropagation.
Publication
Authors
V. Sarasan
Keywords
St. Helena Ebony, endemic, supporting materials, transplantation, micropropagation
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