K. ChandraSekar , S. K. Srivastava

Abstract

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K. ChandraSekar , S. K. Srivastava

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P. S. N. Rao , S. K. Srivastava

Abstract

A list of 15 promising orchid species out of about 90 occurring in the islands is given for possible commercial exploitation so that this potential resource is turned into wealth in a long run without disturbing the natural habitats. A few suggestions are also made for curbing bulk collections from nature and for successful cultivation in gardens/orchidaria before they are eventually exploited.

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P. Lakshminarasimhan , S. K. Srivastava

Abstract

Salacia macrosperma Wight, S reticulata Wight and S. salacioides (Roxb.) Rolla Rao & Hemadri is reported here as additions to the genus Salacia L. of Andaman and Nicobar Islands.

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Kumar Ambrish , S. K. Srivastava

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Kumar Ambrish , S. K. Srivastava

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Gopal Krishna ¹, S. K. Srivastava ¹

Affiliations
1 Central National Herbarium, Botanical Survey of India, Howrah-3, West Bengal, IN

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G. S. Panwar ¹, L. I. Chanu ¹, S. K. Srivastava ¹, K. Ambrish ¹

Affiliations
1 Botanical Survey of India, Northern Regional Centre, Dehradun-248195 (Uttarakhand)

Abstract

Leaf, pollen and seed morphology of Eremostachys superba was studied using scanning electron microscopy (SEM) to facilitate identification of this critically endangered medicinal herb. The SEM analysis of the species showed that the leaf of the species is covered with unicellular sparse indumentum of short or longer simple hairs and more pronounced at the margins. The seeds of E. superba are triradiate with triquetrous surface and a tuft of stiff multicellular hairs are present at the apical end. The pollen grains are tricolpate with reticulate surface.

Keywords

Eremostachys Superba, Morphology, Pollen Grains, Identification

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K. Chandra Sekar ¹, Aseesh Pandey ¹, S. K. Srivastava ², Lalit Giri ¹

Affiliations
1 G.B. Pant Institute of Himalayan Environment & Development Kosi - Katarmal, Almora - 263 643, Uttarakhand, IN
2 Botanical Survey of India, Northern Regional Centre, 192-Kaulagarh Road, Dehradun - 248 195, Uttarakhand, IN

Abstract

The present paper deals with the invasive alien plants found in the state of Himachal Pradesh, India. A total number of 125 invasive alien species under 83 genera, belonging to 39 families have been recorded based on field observations, herbarium and literature consultation. Tropical American elements contribute 75% of alien species found in the state. Among the invasive, annuals comprise 63%, herbs constitute 79% and only four tree species recorded as invasive species. Invasive species based habitat shows that 44% of invasive species were most abundant in wasteland, while cultivated fields, roadsides and forests were preferred by 20, 16 and 9% species respectively. Among the invasive alien elements, 70 species (56%) are being used by local inhabitants for different medicinal uses. Early detection and monitoring of naturalized weeds are essential for better control.

Keywords

Invasive Species, Himachal Pradesh, India.

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G. S. Panwar ¹, S. K. Srivastava ¹

Affiliations
1 Botanical Survey of India, Northern Regional Centre, Dehradun, Uttarakhand, IN

Abstract

The present study describes seed viability, germination and storage behaviour studies of Eremostachys superba seeds under controlled condition. Eremostachys superba is an endangered medicinal and ornamental herb of North-West Himalaya. Fresh seeds exhibited 98% seed viability and a gradual decrease in seeds stored for different durations at room temperature (RT) and 0-4°C in refrigerator. Maximum germination percentage was observed in seeds stored at 0-4°C for 6-months (35.15%) as compared to the freshly collected seeds (5.7%). Seed germination percentage was enhanced by presoaking the seeds in different concentrations of gibberellic acid. Presoaking of seeds in 400ppm of GA₃ was found most effective and 79.32% and 29.43% germination was reported in the seeds soaked in 400ppm GA₃ and stored for 6-months at 0-4°C while 29% germination was seen in freshly collected seeds stored at the same temperature and duration. Seeds stored for 6 months at 0-4°C, after presoaking for 24 hours in 400ppm GA₃ and sowing in the month of August were found to be most conducive for propagation.

Keywords

Dormancy, Eremostachys Superba, Gibberellic Acid, Seed Germination, Seed Storage.

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R. Manikandan ¹, S. K. Srivastava ¹

Affiliations
1 Botanical Survey of India, Northern Regional Centre Dehradun, Uttarakhand, IN

Abstract

The paper deals with information on floristic composition of the Govind Pashu Vihar Wildlife Sanctuary compriseing 821 species, 8 subspecies, 11 varieties and a few cultivated species of Angiosperms, distributed over 479 genera and 125 families, of these, 9 species are critically endangered, 14 species are endangered, 9 species are vulnerable and 7 species are Least Concern. In addition, medicinal plants which form the basis for certain life saving drugs have also been incorporated.

Keywords

Medicinal Plants, Threatened Plants, Govind Pashu Vihar Wildlife Sanctuary, Western Himalaya.

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Ambrish Kumar ¹, S. K. Srivastava ¹

Affiliations
1 Botanical Survey of India, Northern Regional Centre, Dehradun (Uttarakhand), IN

Abstract

No Abstract.

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G. S. Panwar ¹, Amber Srivastava ¹, S. K. Srivastava ¹

Affiliations
1 Botanical Survey of India, Northern Regional Centre, Dehradun, Uttarakhand, IN

Abstract

Pittosporum eriocarpum (Pittosporaceae), commonly known as agni, is an endangered and endemic species of North-West Himalaya and facing a grim situation in the wild. Bark of the species is widely used for the preparation of traditional medicines for the treatment of narcotic, expectorant, bronchitis as well. Microprogation of the species has been carried out by using the shoot tip explant and 93.54% shooting was reported in MS medium supplemented with BAP (5.7 μM) and NAA (1.59 μM) with 24.6 average number of shoots and 5.8 cm shoot length. The in vitro regenerated shoots were shifted to the ischolar_maining medium and quarter-strength basal MS medium fortified with IBA (7.3μM) was observed as the optimum medium for the ischolar_main induction and 95.78% ischolar_maining was reported with 17.4 average numbers of ischolar_mains and 3.6 cm ischolar_main length. After proper development of ischolar_mains (3 weeks) with average ischolar_main length 3.6 cm, 50 plantlets were washed properly and shifted to polythene bags containing mixture of vermiculite and soil (1:1w/v) and maintained in the green house. Initially the pots were covered by the transparent polythene bags to ensure the required humidity content and watered with 1/₄ modified Hoagland's solution on alternate day. These acclimatized plants were transferred to the field with survival rate of about 84%.

Keywords

Conservation, Pittosporum eriocarpum, Narcotic, Expectorant, Bronchitis, Micropropagation, Vermiculite.

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Vineet Singh ¹, S. K. Srivastava ²

Affiliations
1 Botanical Survey of India, Central Regional Centre, Allahabad 211 002, Uttar Pradesh, IN
2 Botanical Survey of India, Northern Regional Centre, Dehradun 248195, Uttarakhand, IN

Abstract

The Parvati Aranga Bird Sanctuary is one of the largest natural flood plain wetland in Uttar Pradesh, situated in Tarabganj tehsil on way to Gonda district between 27°10'' to 27° 24'' N latitude and 82° 15'' to 82° 20'' E longitude. It was named after two important lakes Parvati and Aranga located in the Wildlife sanctuary. These are rainfed horse shoe shaped lakes in a deep natural depression in the Gangetic plains of the terai region 2 established in 1990 with an area of about 11 km².

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