Sensitivity of some varieties of tomatoes and cucumbers grown in Salahaddin province, to Root- knots Nematoda Meloidogyne javanica | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 12, Issue 3, September 2012, Pages 77-84 | ||
| Author | ||
| Iftikhar Musa Jebara | ||
| Abstract | ||
| By testing the ability of six varieties of tomato (Supermarmads, Rwad p.s., Murjana, Warda, Dhaheb, Rabeaa), and four varieties of the cucumber (Nickerson, Royal, Najm, Rwad) towards the infection of Nematoda root-knot M. javanica, the study found that five varieties of tomato were sensitive to Nematoda infection, according to the average number of knots and damage index ,but the variety Rabeaa was a moderate resistance, with an average number of knots number and damage index (2.333, 5.111), respectively, compared to other varieties studied, The result showed that all varieties studied were sensitive to the infection of Nematoda M. javanica with different degrees ,two varieties (Rwad, Nickerson) were sensitive to a high infection with an average number of knots and damage index (35.7, 8, 60, 8.3) respectively, but the two varieties (Najm, Royal) were susceptible to nematode infection, with an average number of knots and damage index (16, 9.3, 5.3, 6.4), respectively. The result also showed the impact of root-knot Nematoda infection on the growth of tomato and cucumber plants represented by the total weight of the root and wet vegetative as well as plant height, the infection caused a significant decrease of all indicators of growth for tomato varieties studied compared to the control, as well as for all cucumber varieties studied for the average weight of the total wet vegetative and plant height, except Rwad variety , which showed a significant increase in the weight of the total roots of the treatment (0.1967g) compared to the control (0.0800 g) and to the rest varieties studied. | ||
| Keywords | ||
| Tomatoes; cucumbers; root | ||
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