Kavita Madhwal , Pankaj Kumar , S. Nautiyal , S. P. Rayal , D. P. Nautiyal

Abstract

The ischolar_maining response of juvenile shoot cuttings (mononodal cuttings) of Terminalia chebula was studied to develop a mass propagation protocol for cloning the desired genotypes. The effect of ischolar_maining hormones was observed for five concentrations (1000, 2000, 3000, 4000 and 5000 ppm) of IBA, IAA and NAA. The maximum ischolar_maining response was observed in case of IBA 4000 ppm (55%) treated cuttings followed by IBA and IAA 3000 ppm (35%) treatments. Only 25 per cent ischolar_maining was observed in case of cuttings without treatment (control). The maximum main ischolar_main length was observed in IBA 1000 and IBA 4000 (8.22 cm) followed by NAA 4000 and NAA 5000.

Keywords

Terminalia chebula, Vegetative Propagation, Cloning, Genotype, Rooting Hormones,
IBA, IAA, NAA

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S. Nautiyal , D. P. Nautiyal , H. C. S. Bhandari , Pankaj Kumar , Rakesh Prakash

Abstract

No abstract

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A. K. Parandial , Pankaj Kumar , H. B. Naithani , T. C. Pokhriyal

Abstract

The Garhwal Himalayas are one of the richest floristic zones for the medicinal plants of Indian subcontinent. It provides matchless wealth of more than 300 rare and endangered species of medicinal plants having therapeutic properties. The over exploitation of these precious material from himalayan forest ecosytstem over last few decades have not only pushed these towards extinction but also enhanced the problem of soil erosion, land degradation and loss of biodiversity in the area. Introduction of nitrogen fixing plants may provide an important tool for the ecorestoration attempts in this area. Advocating nitrogen fixing plants having medicinal uses may provide wider acceptability among the local populace from economic as well as soil conservation point of view. The adoptability of indigenous species may be useful for planting and rejuvenating the degraded sites in different altitudinal zones of the Himalayan ecosystem. In the present article an attempt has been made to enumerate the existing nitrogen fixing species of medicinal values at various altitude for the conservation of degraded sites in Garhwal Himalayas.

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Rajeev K. Srivastava , V. P. Khanduri , C. M. Sharma , Pankaj Kumar

Abstract

Temperate forest structure, species composition, dispersion, diversity and regeneration behaviour in relation to the physico-chemical properties of soil were studied in the Oakmixed coniferous forest in a part of Garhwal Himalaya during the year 2000. The study indicated that the total density and basal cover values in the tree layer varied from 630 to 1,590 stems/ ha and 20.04 to 82.51 m²/ha respectively. The maximum number of saplings and seedlings (520 and 720 stems/ha respectively) were observed on the highest altitude (2,100m asl), whereas, the minimum number of saplings and seedlings (200 and 100 stems/ha respectively), on the lowest altitude (1600m asl). The study further revels that the moist temperate forest is characterized by a patchy distribution of species and individuals with mixed species composition and the sites are represented by different dominants and codominant species. The values of diversity and concentration of dominance oscillated between 1.33 to 2.01 and 0.27 to 0.45, respectively. Physico- chemical properties of soils were found to be promising for the growth of forest. Availability of higher average organic carbon and nitrogen contents might have given birth to higher total basal cover values on 1,700m and 1,800m altitudes, whereas, lesser prevalence of these parameters on 1,900m and 2,000m altitudes apparent to lower total basal cover values.

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Rakesh Kumar , S. Nautiyal , Pankaj Kumar , Anjali Bahuguna

Abstract

An attempt was made to study the variation in seed traits among different seed sources of Acacia catechu from Haryana, Punjab, Uttaranchal and Jammu & Kashmir. Further, correlations among various seed traits, germination percentage and growth behaviour of parent trees was also estimated. The correlation matrix revealed that statistically significant correlation exists between seed weight and germination per cent, therefore seed weight can be considered as an important trait for early selection of seed sources. Comparatively, the seed sources i.e. Manjhi-l, Manjhi-2 (Hoshiarpur, Punjab); Pinjour (Haryana) and Rudraprayag (Uttaranchal) performed better in germination study.

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Vijay Rawat , Dhan Singh , Pankaj Kumar

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No abstract

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Vijay Rawat , Dhan Singh , Pankaj Kumar

Abstract

Climate change is a phenomenon of completing over time scale of hundred , thousands and millions of years. The features like increased flooding , landslide and storm damage , increased death from heat strokes , failure of traditional agricultural system through drought are all scenarios , which could be due to climate change. Global warming may also have serious implications for forest ecosystems , especially for plantations and the matching of tree species with sites , which may be affected by changed climatic conditions. Forests play an important role in sequestration of carbon globally. The study of potential impact of climate change on existing forest ecosystem is inevitably required for the further mitigation to the problem. The present paper examines the impact of global climate change on forest biodiversity.

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Amit Kotia , Pankaj Kumar , Umesh Kumar L. Tiwari , Amar Nath Parsad , Gopal Singh Rawat

Abstract

Dendrobium peguanum Lindl. and Liparis deflexa J.D.Hook, are two orchid species which are reported for the first time from Chhattisgarh state (Kanger Valley National Park) or we can say past Madhya Pradesh state. The present article deals with the description and distribution map of the species.

Keywords

Dendrobium peguanum, Liparis deflexa, Orchidaceae, Kanger Valley National Park, Chhattisgarh

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Kirti Rawat , Monika Tyagi , S. Nautiyal , Pankaj Kumar

Abstract

Genetic parameters for five seed traits (length, width, thickness, weight, and volume) and percentage germination were studied in twenty seed sources of Pinus wallichiana, mostly from the states of Uttaranchal and Himachal Pradesh in two successive years 2002 and 2003. Values for variability and expected genetic gain were calculated for all individual characters. Seed weight and volume exhibited high genetic variability, heritability and genetic gain. Almost all the seed characteristics were found to be highly heritable at 5% level of significance. Heritability values were maximum for seed weight and minimum for seed length. Hence, heavy and large seeds have to be chosen for the good results. A correlation study showed that seed length, width, thickness, weight and volume were positively correlated with each other. Seed thickness had the highest direct effect on seed width. Germination characteristics were also found positively correlated with each other.

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S. K. Verma , Gireesh Chand , Pankaj Kumar

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Amit Kotia , Pankaj Kumar , Sumit Dookia

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No Abstract

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