روي ارقام حساس و مقاوم گوجه فرنگي در شرايط مزرعه PSEUDOMONAS SYRINGAE روند استقرار باكتري

Study of colonization dynamics Pseudomonas syringae on susceptible and resistant varities of tomato under field conditions

The population dynamics of Pseudomonae under field study showed an epiphytic life cycle of P.s.pv.syringae and P.s.pv. tomato on susceptible and resistant varieties of tomato. The path of P. syringae colonization on all plant life stages beginning from seedling to seed production was investigated. The results showed that level of colonization of the bacteria depends on interaction between bacterial and plant cells. Bacterial colonization inside the fruit was significantly lower than the growth parts of the plant. The level of bacterial colonization on susceptible plants was significantly higher than resistant plant. In the field conditions the results indicated that transferring of P.s.pv.tomato by seed was low. The ASFR (Amplification Selective Fragment Restriction) method for identification precies of P.syringae isolates was recognized suitable in the field condition. From the results obtained by ASFR method it is concluded that the epiphytic colonization of this bacteria depend on prime infestation and migrated bacteria in the air does not have any importance in epiphytic colonization.