Hi Mohammed, It is very low probability of transmission of P. infestans via tomato seeds,

Please find these useful manuscript about that issue.

https://link.springer.com/content/pdf/10.1007/BF02979818.pdf

https://articles.extension.org/pages/18361/organic-management-of-late-blight-of-potato-and-tomato-phytophthora-infestans

https://www.ctahr.hawaii.edu/oc/freepubs/pdf/PD-45.pdf

Dear Muhammed,

It is known that any previous infection can cause the spread of the late blight disease in later time. The spread of the disease is not restricted to seeds only. any previous plant residues can be a source of infection to tomato or potato nearby.

Regards,

Thank so much for your response

If the disease infected the fruit, it can be transmitted via seeds.

Dear Mohammed Fayyadh

Please check these files

Thank you Dr.Tony

@ Dr. Mohammed Fayyadh

Phytophthora infestans is seed borne in tomato.

Thanks!

This oomycete has a chance to infect and survive on tomato seeds only if the oospores are issue from the mating of strains A1 and A1