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Pandurangan, A. G.
- Occurrence of Twin Seedlings in Gluta travancorica Bedd.- a Rare and Endemic Tree of the Southern Western Ghats
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Indian Forester, Vol 131, No 1 (2005), Pagination: 118-120Abstract
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- Memecylon royenii Blume (Melastomataceae) : A New Record for India
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Indian Forester, Vol 132, No 2 (2006), Pagination: 229-232Abstract
Memecylon royenii Blume, a Sri Lankan element, is recorded for the first time from India. Detailed description with illustration and notes are provided based on fresh collections. Its phytogeographical significance from conservation point of view is also discussed.- Floral Biology of Impatiens trichocarpa Hook. f., (Balsaminaceae) an endemic Balsam of Western Ghats
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Authors
Affiliations
1 Tropical Botanic Garden and Research Institute, Palode-695 562 Thiruvananthapuram, Kerala, IN
1 Tropical Botanic Garden and Research Institute, Palode-695 562 Thiruvananthapuram, Kerala, IN
Source
Indian Journal of Science and Technology, Vol 2, No 2 (2009), Pagination: 30-34Abstract
Floral biology of Impatiens trichocarpa, an endemic and horticulturally promising balsam from Western Ghats, has been conducted. It flowers during July to November with optimum flowering in the month of September. Anthesis occurred in the night time between 0200 to 0300h and dehisced one day before anthesis. Pollen grains are spherical, light yellow in colour and 32.72μm in diameter. The maximum percentage of stigma receptivity (82%) observed on the day of anthesis. Bees, flies and butterflies forage at the flowers; but bees serve a better pollinator. Nectar production begins soon after anthesis and continues through flower life. The seed germination was limited to 35% which may be one of the reasons for its restricted distribution.Keywords
Anthesis, Floral Biology, Impatiens trichocarpa, Stigma Receptivity, Western GhatsFull Text
References
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- Vivipary in Gluta travancorica: Its Phytogeographic and Evolutionary Significance
Abstract Views :146 |
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Authors
Affiliations
1 Kerala Forest Research Institute Peechi, 680 653, Thrissur, Kerala, IN
2 Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Palode, 695 562 Thiruvananthapuram, Kerala, IN
1 Kerala Forest Research Institute Peechi, 680 653, Thrissur, Kerala, IN
2 Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Palode, 695 562 Thiruvananthapuram, Kerala, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 55 (2013), Pagination: 89-93Abstract
The occurrence of vivipary in Gluta. travancorica has been treated as a genetic linked adaptive strategy through an evolutionary process to sustain the minimum viable individuals in its habitats. The vicariance of Gluta spp. viz., Southern Western Ghats, Madagascar and New Guinea from the main stock of the Malayan peninsula implies the phytogeographic history of the peninsular India on the basis of continental drift and biotic ferry model of transoceanic movement in plants. Malayan peninsula accommodates about 10 species of the Gluta, which usually inhabit peat swamps or marshy places. The ever-ending physical vagaries experiences in the presently degraded shola/montane ecosystems of the southern Western Ghats has compelled the species to produce viviparous seed germination as an adaptation to make sure its progenies. Further, the vivipary in G. travancorica recalls its possible original habitats in the peat swamps since its allied species are growing as mangrove associates in the Malayan peninsula.Keywords
Vicariance, Phytogeography, Endemism, Evolution, Adaptation.Full Text
- New Population Records and Ecology of Humboldtia bourdillonii (Leguminosae: Caesalpinioideae) - A Critically Endangered Tree of Southern Western Ghats, Kerala
Abstract Views :150 |
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Authors
Affiliations
1 Jawaharlal Nehru Tropical Botanic Garden And Research Institute, Palode-695 562, Kerala, IN
2 PG Department of Botany, Christ College, Irinjalakuda-680125, Kerala, IN
3 Kerala Forest Research Institute, Peechi- 680 653, Kerala, IN
1 Jawaharlal Nehru Tropical Botanic Garden And Research Institute, Palode-695 562, Kerala, IN
2 PG Department of Botany, Christ College, Irinjalakuda-680125, Kerala, IN
3 Kerala Forest Research Institute, Peechi- 680 653, Kerala, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 62, No 1 (2020), Pagination: 40-45Abstract
Two new populations of Humboldtia bourdillonii Prain, an endemic tree of southern Western Ghats, Kerala, were recorded from Kulamavu forest, Idukki district,Kerala. The earlier populations reported are from Arjunankotta-Poonkavanam forests in Periyar Tiger Reserve of Peermede plateau. The population structure including number of mature individuals, gbh, age class along with major associates and seedling bank of the populations were analyzed as part of population ecology and subsequent in situ conservation of the species.Keywords
In situ Conservation, Kerala, New Populations, Population Ecology, Western Ghats.Full Text
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