EFFICACY OF GROWTH MEDIUM (MURASHIGE&SKOOG) SUPPLEMENTED WITH CERTAIN ESSENTIAL OILS ON TOMATO ROOTS SUITABILITY TO Meloidogyne incognita INFECTION UNDER GREENHOUSE CONDITIONS. | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 5, Volume 32, Issue 8, August 2007, Page 6809-6819 PDF (584.39 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2007.220164 | ||||
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| Authors | ||||
| A. H. Nour El-Deen,; A. G. El-Sherif; Fatma A. M. Mostafa; A. R. Refaei | ||||
| Nematology Research Unit, Agric. Zoology Dept. Fac. Agric., Mansoura Univ., Egypt. | ||||
| Abstract | ||||
| The influence of six essential oils i.e. garlic, sesame, neem, castor, chamomile, and linseed added to aseptic culture (MS medium) used for growth of tomato seedlings cv Strain-B before transplanting in pots with sterilized sandy loam soil on Meloidogyne incognita infection was studied under greenhouse conditions 30±5°C. Results indicated that all of the tested essential oils introduced into growth media protected and improved tomato plant growth of either the infected or uninfected with nematodes to a certain extent. Among all tested materials, castor oil gave the highest increment in fresh weight of the whole plant either infected or uninfected with values of 135.42% and 217.59%, respectively. The same trend was observed with castor oil in respect to increasing shoot dry weight of the healthy tomato plants (37.14%) whereas recorded the second to linseed oil treatment with the infected plants with values of 32.56% and 35.2%, respectively. Moreover, sesame oil application achieved the second values to castor oil treatment in increase percentage of both fresh weight of whole plant (132%) as well as shoot dry weight (29.24%), respectively. The highest reduction percentage in nematode population was obtained with castor oil treatment which amounted to 93.53% followed by linseed oil application with value of 92.71%. Among all tested essential oils, sesame oil significantly decreased number of galls on tomato roots with reduction percentage of 90%, followed by those treated with either chamomile or linseed oils with value of 87.5% each. M. incognita did not produce egg-masses on plants treated with all of the tested materials and considered as highly resistant due to egg-masses indices (zero each) whereas those received linseed oil as very resistant with egg-masses index value of 3 and reduction percentage value of 97.4%. | ||||
| Keywords | ||||
| Aseptic culture (MS medium); essential oils; Meloidogyne incognita; tomato; resistance | ||||
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