تاثیر برخی از آمینواسیدها بر فعالیت نماتد ریشه گرهی Meloidogyne javanica در گیاه گوجه فرنگی

Root-knot nematodes of Meloidogyne javanica are among the most important pathogens that cause great damage to agricultural products. The management of this pathogen is difficult due to its expansion and wide host range. Some agricultural operations such as rotation, fallowing, cultivation of non-sensitive plants and some soil additives are effective in reducing root-knot nematode damage. While, these methods do not completely eliminate nematodes in the soil, but they reduce their population. Considering the disadvantages of chemical nematicide application and the ineffectiveness of other methods. Therefore, the use of resistant cultivars is considered a suitable method. There are a large number of living and non-living factors that can increase the host's resistance against the pathogen. In general, in field conditions, the use of fertilizers affects the occurrence of diseases and pests caused by the nutritional status of plants and indirectly causes the creation of dense masses and changes in light and moisture inhibition in the product. In this research, the effects of some amino acids such as glycine, methionine, glutamic acid and histidine were investigated on increasing plant resistance and reducing root-knot nematode damage in tomato plants. The results showed that the glutamic acid, with the lowest number of root galls, egg masses, eggs and second instar larvae in the soil and consequently the lowest nematode population, was recognized as the most effective amino acid in this research. Also, this compound increased the vegetative characteristics such as fresh root weight, fresh foliage weight, root dry weight, foliage dry weight and foliage length in plants. Therefore, application of glutamic acid can be applied to protect tomato plants against M. javanica.