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Germination and Early Seedling Growth of Mustard and Wheat as Affected by Allelopathic Activity of Pinus Needle Extracts

Author Affiliations

  • 12 Department of Botany, Govt. Shri Krishnaji Rao Pawar P. G. College, Dewas, MP, INDIA
  • 2 Department of Botany, Govt. College, Kannod, Dewas, MP, INDIA

Int. Res. J. Environment Sci., Volume 3, Issue (5), Pages 27-34, May,22 (2014)


An experiment has been conducted to assess the Allelopathic potential of Pinus needles on seed germination and early seedling growth of Wheat and Mustard. Phenomenon ofAllelopathy could be defined as involvement of phytochemicals in the growth and development of surrounding plants, which could be direct or indirect. Moreover the effects could be positive or negative. Plants release phyto-chemicals in the surrounding soil and environment. Allelochemicals are primarily phenolic compounds which are involved in causing number of problems, such as reduction in crop production due to changes in chemical as well as microbial composition of soil, changes in the structure of ecosystem and failure in regeneration of natural forests. In the present study we demonstrate the toxic effects allelochemicals from Pinus needles on Wheat and Mustard seeds. The main aim of this study is to draw attention to the allelopathic potential of phenolic compounds present in pine needles in as the main cause of reduction in crop production.


  1. Rizvi S.J.H., Haque H., Singh V.K. Rizvi V., A discipline called allelopathy. In: S.J.H. Rizvi, & V. Rizvi (eds.). Allelopathy: Basic and applied aspect,. Chapmann & Hall Publishers, 1-8 (1992)
  2. Nandal D.P.S., Birla S.S., Narwal S.S., Koushik J.C. Allelopathic interactions in agroforestry systems. In: Allelopathy in Agriculture and Forestry, Jodhapur, 93-130 (1994)
  3. Rizvi S.J.H., Rizvi V. Allelopathy: Some new terminological considerations, Current Sciences, 85, 191-192 (1986)
  4. Rice E.L., Allelopathy, Academic Press Inc., New York, 353 (1974)
  5. William B. Critchfield & Elbert L. Little, Jr.,Geographic distribution of the pines of the world, Miscellaneous publication no. 991, U.S. Department of Agriculture and Forest Service, Washington D.C., February, (1966)
  6. Zafar I., Fatima A., Khan S.J., Rehman Z., Mehmud S. GCMS studies of needles essential oil of Pinus roxburghaii and their antimicrobial activity from Pakistan, Electr J Environ Agric Food Chem., 9(3), 468-473 (2010)
  7. Heath R.L. and Packer L., Photoperoxidation on isolated chloroplasts, I. Kinetics and stachiometry of fatty acid peroxidation, Arch. Biochem. Biophys., 125, 189-198 (1968)
  8. Ohno T., Doolan K.I., Zibilske L.M., Liebman M., Gollandt E.R., Berube C. Phytotoxic effect of red clover amended soils on wild mustard seedling growth, Agricult. Ecosyst. Environ., 78, 187-192 (2000)
  9. Bogatek R., Gniazdowska A., Zakrzewska W., Oracz K., and Gawroński, S.W., Allelopathic effect of sunflower extracts on mustard seed germination and seedling growth. Biol. Plant. 50, 156–158 (2006)
  10. Cruz-Ortega R., Anaya A.L., Hernandez-Bautista B.E., Laguna-Hernandez G., Effects of allelochemical stress produced by Sicyos deppei on seedling root ultrastructure of Phaseolus vulgaris and Cucurbita ficifolia. - J. chem. Ecol. 24, 2039-2057 (1998)
  11. Radosevich S.R. Holt J.S., Weed-ecology: Implications for vegetation management. Wiley-Interscience Publications. 93-138 (1984)
  12. Rice E.L., Allelopathy-an update, Bot Rev., 45, 15-109 (1979)
  13. Putnam A.R., Weed allelopathy. In: S.O. Duke (ed.). Weed physiology, 1, Reproduction and Ecophysiology, CRC Press, 131-155 (1985)
  14. Loponen J., Lempa K., Ossipov V., Kozlov M. V., Girs A., Hangasmaa K., Haukioja E. Pihlaja K. Patterns in content of phenolic compounds in leaves of mountain birches along a strong pollution gradient, Chemosphere, 45(3), 291-301 (2001)
  15. Huang Z., Liao L., Wang S. and Cao G., Allelopathy of phenolics from decomposing Stump-roots in replant Chinese fir woodland, J. Chem. Ecol., 26(9), 2211–2219 (2000)
  16. Chandramohan D., Purushothaman D. and Kothandaraman R., Soil phenolics and plant growth inhibition, Plant and Soil, 39(2), 303-308 (1973)
  17. Srinivas J., Purushotham A.V. and Murali Krishna K.V.S.G The effects of Heavy metals on Seed Germination and Plant Growth on Coccinia, Mentha and Trigonella Plant Seeds in Timmapuram, E.G. District, Andhra Pradesh, India. Int. Res. J. Environment Sci.Vol. 2(6), 20-24 (2013)
  18. Raval A.A. and Desai P.B., Rhizobacteria from Rhizosphere of Sunflower (Helianthus annuus L.) and their effect on Plant Growth, Res.J.Recent Sci., 1(6), 58-61 (2012)
  19. Nabatte P. and Nyombi K., Effect of Pine Plantation Surface fires on Soil Chemical Properties in Uganda, Res. J. Agriculture and Forestry Sci., 1(7), 10-14 (2013)
  20. Dangwal L.R. and Singh Tajinder Comparative Vegetational Analysis and Pinus roxburghii Sarg regeneration in relation to their disturbances in some Chirpine forest of block Nowshera, district Rajouri, J and K, India, 1(1), 47-54 (2012)
  21. Kil B.S. and Yim Y.J., Allelopathic effects of Pinus densiflora on undergrowth of red pine forest, Journal of Chemical Ecology, 9, 1135-1151 (1983)
  22. Kil B.S., Allelopathic effects of five pine species in Korea. In: C.H., Chou, & G.R. Waller (ed.), Phytochemical Ecology: Allelochemicals, Mycotoxins and Insect Pheromones and Allomones. Institute of Botany. Academia Sinica Monographs Series No 9. Taipei, ROC. 81-99 (1989)