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Jose, P. A.

• Albino Seedlings and its Genetic Significance in Humboldtia vahliana Wight and Syzygium mundagom (Bourd.) Chithra - two Endemic Trees of Southern Western Ghats

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Authors

P. A. Jose , N. Mohanan , A. Hussain

Source

Indian Forester, Vol 135, No 1 (2009), Pagination: 137-139

Abstract

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• Occurrence of Twin Seedlings in Humboldtia Vahliana Wight and Syzygium Mundagom (Bourd.) Chithra-Two Endemic Trees of Southern Western Ghats

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Authors

P. A. Jose , N. Mohanan , A. Hussain

Source

Indian Forester, Vol 135, No 2 (2009), Pagination: 290-292

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• New Record of Seed Pest, Cryptorhynchus indicus Motschulsky (Coleoptera : Curculionidae) in Humboldtia vahliana Wight

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Authors

P. A. Jose , N. Mohanan , A. Hussain

Source

Indian Forester, Vol 134, No 6 (2008), Pagination: 849-850

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• Occurrence of Twin Seedlings in Gluta travancorica Bedd.- a Rare and Endemic Tree of the Southern Western Ghats

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Authors

P. A. Jose , A. G. Pandurangan

Source

Indian Forester, Vol 131, No 1 (2005), Pagination: 118-120

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No abstract

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• An Account of the Vegetative Propagation in Terminalia chebula Retz.

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Authors

P. A. Jose , Jacob Thomas

Source

Indian Forester, Vol 124, No 5 (1998), Pagination: 357-359

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• Vegetative Propagation of Ochreinauclea missionis (wall. Ex G. Don) Ridsd. a Rare and Threatened Tree Species of Western Ghats

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Authors

P. A. Jose , Jacob Thomas , P. N. Krishnan

Source

Indian Forester, Vol 121, No 12 (1995), Pagination: 1159-1164

Abstract

Ochreinauclea missionis (Wall ex G. Don) Ridsd. is an extremely rare and threatened medicinally important tree, endemic to Western Ghats. Vegetative propagation of the plant was tried using stem cuttings treated with auxins (IAA, IBA and NAA) during summer, monsoon months and air layering in order to develop promising propagation methods to aid for its conservation. Soft cuttings treated with IBA at a concentration of 1000 ppm during monsoon and air layering during August-October were found to be ideal methods of vegetative propagation of the species.

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• Vivipary in Gluta travancorica: Its Phytogeographic and Evolutionary Significance

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Authors

P. A. Jose ¹, A. G. Pandurangan ²

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

Source

Nelumbo - The Bulletin of the Botanical Survey of India, Vol 55 (2013), Pagination: 89-93

Abstract

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.

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• New Population Records and Ecology of Humboldtia bourdillonii (Leguminosae: Caesalpinioideae) - A Critically Endangered Tree of Southern Western Ghats, Kerala

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Authors

Rahul Jose ¹, E. J. Vincent ², K. Subin ³, P. A. Jose ³, A. G. Pandurangan ¹

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

Source

Nelumbo - The Bulletin of the Botanical Survey of India, Vol 62, No 1 (2020), Pagination: 40-45

Abstract

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.

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References

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• Rarity Analysis of an Endangered Tropical Tree Species of the Western Ghats, India

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Authors

K. Subin ¹, P. A. Jose ¹, A. S. Vivek ¹

Affiliations
1 Sustainable Forest Management Division, Kerala Forest Research Institute, Peechi 680 653, IN

Source

Current Science, Vol 123, No 1 (2022), Pagination: 67-72

Abstract

The rarity of Atuna indica, an endemic and endangered tropical tree species of the Western Ghats, India has been analysed in this study. The phenology, floral bio­logy, including pollen–ovule ratio, pollinators, fruit development and biotic interactions in natural dyna­mics were studied. Extreme reduction in the number of flowering individuals, microhabitat conditions, low fruit set, seed infestation and fruit predation were identified as the factors leading to rarity of the species in situ.

Keywords

Atuna Indica, Endangered Species, Phenological Changes, Rarity Analysis, Reproductive Biology

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