Seed maturation timing in Quercus leucotrichophora A. camus along an altitudinal gradient in Uttarakhand Himalaya
Ashish Tewari, Amit Mittal and Nandan Singh
Department of Forestry and Environmental Science, D.S.B. Campus, Kumaun University, Nainital, Uttarakhand, India
Abstract
Quercus leucotrichophora A. Camus is a dominant forest forming species in Central Himalayan region between 1600 and 2100 m elevation. The species is under severe anthropogenic pressure and failing to regenerate in its natural environment. Climatic irregularities may further aggravate the problem as acorn ripening time may shift. Acorns of Q. leucotrichophora were collected from three sites located along the altitudinal limits of the species to determine the acorn maturation time. Across the sites the mean weight of acorns between the first and final collection ranged from 9.3±2.2 gm to 21.6±2.1. Inspite of variation in moisture content initial germination commenced at the same time across the sites. Maximum acorn germination was between 56.7±1.2 and 59.6±0.6. The mean acorn size was larger at the lower elevation site than higher elevation site across the collection dates. The change in acorn colour from green to dark brown, the removal of acorns cap with ease and acorn moisture content between 36.4±0.8 – 37.6±1.2 at the time of maximum germination appear to be reliable indication of maturity. Comparison with an earlier study indicates that acorns are now maturing earlier which can be severely affects its regeneration potential.
Climate Change, Germination, Himalaya, Moisture, Quercus leucotrichophora, Seed Maturity
Adler, P. B. andLambers, J. H., 2008. The influence of climate and species composition on the population dynamics of ten prairie forbs. Ecology, 89: 3049–3060.
Baeten, L.;Frenne, P. D.; Verheyen, K.;Graae, B. J. and Hermy, M., 2010. Forest herbs in the face of global change: a single-species-multiple-threats approach for Anemone nemorosa. Plant Ecology and Evolution, 143: 19–30.
Bhatt, J., Tewari, A. and Mittal, A.,2016. Regeneration Problem in Quercus leucotrichophora A. Camus in Nainital Forest Division of Kumaun Himalaya.Int. J. Pure App. Biosci.,3(3): 284-290.
Bhatt, J. and Ram, J.,2005. Seed Characteristics and Germination in Quercus leucotrichophora A. Camus Along the Elevation Gradient in the Uttaranchal Himalaya; Ecology and Environmental Management, New Delhi, 15: 207-213.
Bhatt, J. and Ram, J.,2007. Seed and seedling characteristics of Himalayan Hornbeam (Carpinusviminea Wall.)India. Ecol. Res., 22: 156-159.
Bhatt, J. and Ram, J.,2015. Seed Maturity Indices in CarpinusViminea (Himalayan Hornbeam) Along Altitudinal Gradients in Relation to Climate Change. Int. J. Rec. Sci. Res., 6 (7): pp. 5237-5242.
Brand, J.E., Effendi M. and Fox, J.E.D., 1994. Seed size and germination of Santalum album from Timor. In: Preparation, Mulga Research Center, School of Environmental Biology. Curtin University of Technology, Perth, WA6001.
Champion, H.G. and Seth, S.K.,1968. A revised survey of the forest types of India. Govt. of India press. Nasik, India.
Fitch, E.A., WalckJ.L. and Hidayati, S.N., 2007. Agroecosystem management for rare species of Paysonia (Brassicaceae): integrating their seed ecology and life cycle with cropping regimens in a changing climate. American Journal of Botany, 94: 102–110.
Griffin, J. R., 1971. Oak regeneration in the upper valley California. Ecology, 52: 862- 865.
Harper, J.L., 1977. Population Biology of Plants. Academic Press, London, 892.
S. T.A. 1993. International rules for seed testing (supplement), Zurich, Switzerland.
Juhnel, H., 1957. Effect of height on germination of forest tree seed. Proceedings of International Seed testing association, 26: 437-452.
Negi, A.K. and Todaria, N.P., 1995. Effect of seed maturity and development on germination of five species from Garhwal Himalaya, India. J. Trop. For. Sci., 8: 255-258.
Newman, J. A., Bergelson, J. and Griffin, A.,1997. Blocking factor and hypothesis test in Ecology: does your statistics rong? Ecol., 78: 1312-1320.
Pandit, A., Pant, K. and Ram, J.,2002. Effect of collection date of capsule moisture content and germination of Populus ciliate Wall ex. Royle from central Himalaya. New Forest, 23: 121-130.
Paul, D.K., 1972. A handbook of nursery practice for Pinus caribaeavar. Hondurensisand other conifers in West Malaysia. Working Paper No. 19 FO: SF/Mal 12, UNDP/FAO Kualalumpur.
Purohit, V.K., Palni, L.M.S.and Nandi, S.K., 2009. Effect of pre-germination treatments on seed physiology and germination of central Himalayan oaks. Physiology Mol. Biol. Plants, 15: 319-326.
Rao, P.B., 1984. Regeneration of some trees of Western Kumaun Himalaya. Ph.D. Thesis. Submitted to Kumaun University, Nainital , Uttarakhand, India.
Schopmeyer, C.S., 1974. Seeds of Woody Plants in the United States U. S. Department of Agriculture. Agriculture Hand book. 450.
Shah, S., Tewari, B., BishtS. and Tewari, A.,2006. Seed Maturation Indicators in PyrancanthacrenulataRoxb. in Kumaun Central Himalaya. New Forest, 32: 1-7.
Silori, C.S., 2001. Status and distribution of anthropogenic pressure in the buffer zone of Nanda Devi. Biosphere Reserve in western Himalaya, India. Biodivers. Conserv. 10: 1113–1130.
Singh, J.S. and Singh, S. P., 1987. Forests Vegetation of the Himalaya. Bot. Rev. 53: 80–192.
Singh, S.P., 1998. Chronic disturbance, a principal cause of environmental degradation in developing countries. Environmental Conservation, 25(1): 1–2.
Singh, S.P., Singh V. and Skutsch, M.,2010. Rapid warming in the Himalayas: Ecosystem responses and development options.Climate and Develop. 2: 221-232.
Tewari, A., Bhatt, J., Mittal, A.,Singh N. and Tamta, K. K.,2016. Regeneration issues and indicators of seed maturity in Mallotusphillipensismuel. Arg. in the tropical Forests of Uttarakhand. Ecology Environment & Conservation, 22(2): 767-773.
Tewari, B.,Tewari, A.,Shah, S.,Pande, N,.and Singh, R. P.,2011. Physical attributes as indicator of seed maturity and germination enhancement in Himalayan Wild Cherry (PrunuscerasoidesD.Don.). New For., 41: 139-146.
Walck, J.L. and Dixon, K.W.,2009. Time to future-proof plants in storage. Nature, 462, 721.
Woodward, F.I. and Williams, B.G., 1987. Climate and plant distribution at global and local scales. Vegetatio, 69: 189–197.
Tewari, A., Mittal, A., & Singh, N. (2017). Seed maturation timing in Quercus leucotrichophora A. camus along an altitudinal gradient in Uttarakhand Himalaya. Environment Conservation Journal, 18(3), 53-59.
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© ASEA
Received: 12.07.2017
Revised: 28.08.2017
Accepted: 08.09.2017
First Online: 21.12. 2017
Publisher Name: Action for Sustainable Efficacious Development and Awareness (ASEA)
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