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Felix Irudhyaraj, D.
- Reproductive Biology of Elaeocarpus blascoi Weibel, an Endemic and Endangered Tree Species of Palni Hills, Western Ghats, India
Abstract Views :259 |
PDF Views:178
Authors
Affiliations
1 Department of Biology, The Gandhigram Rural Institute – Deemed University, Gandhigram 624 302, IN
1 Department of Biology, The Gandhigram Rural Institute – Deemed University, Gandhigram 624 302, IN
Source
Current Science, Vol 110, No 2 (2016), Pagination: 234-240Abstract
Elaeocarpus blascoi Weibel is a lesser known endemic tree species growing in the Vattakanal shola forest of Palni Hills, Western Ghats, India. A study on reproductive biology of the species was conducted in the natural habitat to study its phenology, floral biology, pollen biology, fruit set and seed germination. Flowers are bisexual, anther dehisces 2-3 hours after anthesis and stigma becomes receptive on the day of anthesis and extends up to 6 days. Breeding experiments confirmed that the species permits autogamy and geitonogamy. Six different pollinators were observed during peak flowering period and Apis dorsata (honey bee) was found to be an effective pollinator and it takes 55 ± 15 sec per flower. Percentage of fruit set observed in the natural habitat was 78% and seed germination rate was found to be less than 5% in the natural habitat. Tests showed that more than 70% of seeds lost their viability after a year and most of the seeds were infested with Fusarium sp., Lasiodiplodia sp. and Penicillium sp. Further, the natural habitat of the species is altered by commercial plantations, tourism and urbanization in the Palni Hills, which leads to their reduction.Keywords
Elaeocarpus blascoi, Endemic Species, Reproductive Biology, Shola Forest.Full Text
- Rediscovery of Elaeocarpus gaussenii Weibel:A Little Known Endemic Tree of the Western Ghats of Tamil Nadu, India
Abstract Views :301 |
PDF Views:76
Authors
Affiliations
1 Department of Biology, The Gandhigram Rural Institute – Deemed University, Gandhigram 624 302, IN
1 Department of Biology, The Gandhigram Rural Institute – Deemed University, Gandhigram 624 302, IN
Source
Current Science, Vol 112, No 12 (2017), Pagination: 2372-2374Abstract
Elaeocarpus, the largest genus of the family Elaeocarpaceae, has 350 species across the world, from Madagascar in the west to Hawaii in the east. In India, the genus is represented by 25 species and is mostly confined to the North East and southern India. They generally prefer to grow in warm and humid climate, and occur between 500 and 2000 m amsl. The fruits of most of the species of Elaeocarpus are edible and their seeds are used as beads for rosaries and bracelets.Full Text
References
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- Irudhyaraj, D. F. and Ramasubbu, R., J. Threat. Taxa, 2014, 6(11), 6473–6476.
- Vijayan, A., Sudhakar, J. V. and Rajasekaran, S. C., J. Econ. Taxon. Bot., 2011, 35(3), 618–620.
- Zmarzty, S., Kew Bull., 2001, 56, 405–447.
- World Conservation Monitoring Centre, Elaeocarpus gaussenii. The IUCN Red List of Threatened Species 1998: e. T33640A9799867, 1998; http://dx.doi.org/10.2305/IUCN.UK.1998.RLTS.T33640A9-799867.en (downloaded on 28 September 2016).