The Allopathic Effects of Cyperus Rotundus Extract on the Germination of Lycopersicon esculentum L. Var Chef Flat

Document Type: Original Article


1 Young Researchers and Elite Club, Islamic Azad University, Jiroft Branch, Jiroft, Iran

2 MS.c student, Department of Agroecology, University of Jiroft, Iran

3 MS.c Student, Lorestan Agricultural & Natural Recourses University, Lorestan, Iran


This experiment was conducted to determine allopathic effects of Cyperus rotundus extracts on the tomato germination. It was a completely randomized design (CRD) with four replications, carried out in the laboratory of the Agricultural College of University Jiroft during 2011. The various test treatments were extracts of Cyperus rotundus taken from aerial organs, root, and combinations of both plant parts, at densities of 0, 25, 50, 75 and 100 percent. Experimental units were Petri dishes in depths and diameters of 3 and 9 cm, respectively. The shoot and root length, shoot and root fresh weight, germination percentage and rate  was measured. The use of the cyperus extract reduced the germination, and it significantly decreased by increasing its in density, such that at the 75% and 100% densities, germination was terminated. Based on the test results, it could be said that the cyperus extract has a severe inhibitory effect on the tomato germination. With time passing, the germination speed decreased over the measurement period, and reached its minimum at day 14. The maximum fresh weight of the root and shoot were achieved from the control treatment (no extract)


An, M., Pratly, J and Hajg, T (1998). Allelopathy. From concept to reality. In proceeding 9 the Australian agronomy conference. Wagga, Australia. pp: 563-566.

Beutner, S., Bloedorn, B., Frixel., S, Blanco., I.H., Hoffman, T and Martin, H (2001). Quantitative assessment of antioxidant properties of natural colorants and phytochemicals: carotenoids, flavonoids,phenols and indigoids. The role of β-carotene in antioxidant functions. J Sci Food Agric 81: 559-568.

Bohrani, J (1994). Allelophatic effect of cultivar plants on the each other. Key paper. Third conference agronomy and breeding of Iran plants. Tabriz, pp: 436.

Burgos, N.R., Talber, R.E and Mattice, J.D (1999). Cultivar and age differences in the production of allelochemicals by secale cereal. Weed sci., 47: 481-485.

Challa, P and Ravindra, V (1998). Allelopathy Journal, 5: 89-92.

Gonzalez, L., Souto, X.G and Rrigosa, M.J (1997). weed Control by capsicum ammum. Allelopaty journal.4:102-110.

Ghiazdowsk, A., Oracz, K and Bogatek, T (2007) . Allelopathy Journal 19(1): 54.

Holm, L.G., plucknett., D.L., pancho, J.V and Herberger, J.P (1977). The world worst wed distribution and biology. Univ. press ofHavaii,Honovlu.pages 8-24,54 -61,125-133.

Jung, W.S., Kim, K.H., Ahn, J.K., Hahn, S.J and Chung, I.M (2004). Crop Protection, 23: 211-218.

Kiemnec, G.L and Mcinnis, M.L (2002). Weed Technology. 16: 231- 234.

Kohli RK and Batish DR. 2001. Allelopathy in agro ecosystems, USA. Food products press.

Kocacaliskan, I and Teriz, F (2001). Journal of Horticultural Science and Biotechnology, 76: 436-440.

Leather, G.R (1993). Weed Science. pp: 31-37.

Mengel, K., Kirkby, E.A., Kosegarten, H and Appel., T (2001). Principles of plant nutrition. Kluwer Academic Publishers, Dor- drecht, The Netherlands.

Mostafavi, K., Sadeghi Geive, H., Dadresan, M and Zarabi, M (2011). Effects of drought stress on germination indices of corn hybrids (Zea mays L.). International Journal of AgriScience, 1(2): 10-18.

Narwal, S.S (1994). Allelopathy in crop production Department of agronomy CCS Haryana agricultural university. Jodhpur. India.

Putnam, A.R (1988). Allelochemical from plant as herbicides. Weed technology, 2: 510-518.

Qasem, J.R (1992). Hort. Sci. 67: 421-427.

Rice, E.L (1984). Allelopathy, seconded. Academic press Inc, Orlando, FL, pp: 422.

SAS (2002). SAS/STAT® user’s guide, SAS Institute, Cary, NC, USA. 9.1.

Sanchez, T.R., Gesto, M.D.V and Vieites, E (1973). Growth Substances isolated from Tubers of cyperusesculentusvaraureus.physiol plant. 28:195-200.

Seigler, D.S (1996). Agron. J. 88: 876-885.