IMPACT OF MS MEDIUM SUPPLEMENTED WITH CERTAIN AMINO ACIDS OR MINERAL SALTS ON TOMATO SUITABILITY TO INFECTION WITH MELOIDOGYNE INCOGNITA UNDER GREENHOUSE CONDITIONS

The effect of certain amino acids, i.e., glutamic acid or proline or mineral salts, i.e., ferric sulphate or urea in comparison with oxamyl at the recommended dose added to MS medium used for growth of tomato seedlings cultivar ‘Strain-B’ before transplanting in pots with sterilized mixture soil/pot (1 loam:1 sand, v:v) on Meloidogyne incognita infection was evaluated under greenhouse conditions at 30±5°C. Results indicate that among tested treatments, glutamic acid gave the highest percentage increase in shoot and root lengths, fresh weight of the whole plant and shoot dry weight for both the infected tomato seedlings by M. incognita; and uninfected plants as well, since their values averaged 94.1, 60.7, 99.8 and 77.8%; and 87.9, 87.2, 128.9 and 114.0%, respectively.
Plants receiving oxamyl treatment accomplished the highest reduction percentage in root-knot nematode population; however, it ranked second to glutamic acid treatment in reducing number of galls and egg-masses.

III International Symposium on Tomato Diseases

A.H. Nour El-Deen

tissue culture, glutamic acid, proline, ferric sulphate, urea, nematode population

https://doi.org/10.17660/ActaHortic.2011.914.47