Effects of Potato Virus Y Strains on Local Tomato Genotype "Sazlıca"

Authors : Musadik Abdullahi Ahmed, Eminur Elçi

Pages : 205-220

View : 8 | Download : 10

Publication Date : 2019-12-28

Article Type : Research

Abstract :The aim of the study was to investigate incidence of PVY and the effect of PVY strains at different development stages on yield and fruit quality of local tomato genotype "Sazlıca” which has importance for local producers. To investigate PVY incidence, symptomatic samples were collected from Sazlıca and 10 % of samples were found to be positive by DAS-ELISA. For the evaluation of effects of PVY strains, seedlings were mechanically inoculated with two different PVY strains in three combinations (PVY NW, NTN, and NW+NTN ) at four different growth stages (7, 14, 21 and 28 days old). PVY susceptible commercial tomato cultivar H2274 was used as control. Among the PVY strains, PVY NW has shown the maximum infection rates in the replications and varieties. For plant age, 7 days old inoculated plants have displayed the maximum PVY infections as expected, whereas, only one infection was observed in 28 days old plants. No any symptoms were detected on fruits for all replications. In the fruit quality and yield parameters, the highest fruit number, length, width, weight, and brix value were observed on PVY NW+NTN in 21 days plants. It can be concluded that there are some PVY infections on Sazlıca tomatoes and among the tested strains, PVY NW strain is the most effective strain on yield and fruit quality of Sazlıca tomatoes. The current study will be useful for the disease management on tomato.
Keywords : tomato, ELISA, PVY strains, inoculation, fruit quality