Topic
Renantanda
About: Renantanda is a research topic. Over the lifetime, 2 publications have been published within this topic receiving 14 citations. The topic is also known as: ×Renantanda.
Papers
TL;DR: RAPD markers generated by the decamer primer OPA1 convincingly confirmed the hybridity of Renanthera imschootiana and V. coerulea.
Abstract: Renanthera imschootiana and Vanda coerulea are two rare and endangered orchid species featuring in IUCN Red List of Threatened Plants as well as in Red Data Book of Indian Plants, and are renowned for their unique ornamental traits. Renanthera imschootiana and V. coerulea have different flowering periods and by taking opportunity of off-season flowering of V. coerulea which happened during the flowering season of R. imschootiana, the hybridization was effected by hand-pollination. Viable pollinia were present in the off-season flowers of V. coerulea and one out of four cross was successful when R. imschootiana was taken as female parent. Reciprocal cross was unsuccessful. The resulting immature hybrid embryos were germinated in vitro on Vacin and Went medium supplemented with 15% v/v coconut water. Best seedling growth was observed on half-strength Murashige and Skoog medium devoid of any plant growth regulators while the transplanted seedlings grew best on brick chips:charcoal pieces (2:1) potting mix in community earthen trays. First flowering of the hybrid seedlings happened four years ten months after transfer to ex vitro environment. RAPD markers generated by the decamer primer OPA1 convincingly confirmed the hybridity. Registration of the hybrid was made with the Royal Horticultural Society with the grex Renantanda Kebisana Shija.
25 citations
1 Feb 2010
TL;DR: Morphological as well as molecular characterizations of these hybrids have been made for confirmation of hybridity and other genetic information and produced beautifully coloured flowers with shelf-lives lasting from 1 to 1 1 / 2 months.
Abstract: The Indo-Burmese mega-biodiversity 'hotspot' houses a number of ornamental orchids belonging to rare, endangered, threatened and vulnerable species possessing highly attractive flowers. However, till date, many of these beautiful orchids growing in the pristine forests of north-east India have remained largely unexplored and unexploited. Renanthera imschootiana Rolfe is an IUCN red-listed rare and endangered orchid classified under Appendix-I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). This orchid is renowned for its bright crimson, long-lasting floriferous spikes which bloom during spring every year. Vanda coerulea Griff. ex. L., and Vanda testacea (L.) Reichb.f. are simultaneously deeply coloured flowers with high aesthetic values. Using Renanthera imschootiana as the female parent, we have crossed it with the Vanda species and intergeneric hybrids have been synthesized, viz., Renantanda Kebisana Shija (R. imschootiana × V. coerulea) and Renantanda Prof GJ Sharma (V. testacea x R. imschootiana). These hybrids have been registered in The International Orchid Register of the Royal Horticultural Society, London. We have also developed in vitro propagation protocols for these parents and their hybrids keeping in view of their conservational and eco-restorative considerations. The synthesized hybrids produced beautifully coloured flowers with shelf-lives lasting from 1 to 1 1 / 2 months. Morphological as well as molecular characterizations of these hybrids have been made for confirmation of hybridity and other genetic information.
3 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2010 | 1 |
| 2009 | 1 |