Role of Meloidogyne javanica on severity of vascular bacterial wilt of eggplant

摘要

The present investigation was aimed to know the effect of time and order of inoculation of Meloidogyne javanica and Ralstonia solanacearum on bacterial wilt disease severity and plant growth of eggplant. Results showed that M. javanica caused reduction in shoot length (39%). Concomitant presence of both pathogens before transplanting resulted into lowest shoot fresh weight (41.70g). Significantly higher root fresh weight (16.75g) was recorded due to higher number of gall (925.67) and eggmass (771.66)per root system in sole inoculation of M. javanica prior to R. solanacearum. Lower root galling and eggmass production was recorded when R. solanacearum inoculated prior to and simultaneously with M. javanica (275 & 220.67; 390.67 & 248.67; 402 & 351.67; 453.33 & 274). Conclusively prior inoculation of M. javanica aggravated the disease severity (60-75%) than R. solanacearum alone (35.00%).