Dear Dicko

First calculate the germination percentage, then say after 7 days measure the root length and shoot length of germinated seed. Add root length and shoot length and then multiply with germination percentage. The whole number which comes this will be seedling vigour index I.e. SVI. If more svi then seed has good quality or inoculation improved the vigour of germinating seed.

Regards 

Dear Hamadoun,

You can calculate by the following formula. I think it will be helpful. If it is not clear let me know i will forward you some reference papers.

Best Wishes,

Shah

Seedling vigor Index were calculated by the following formula

 S.V. I. = Root Length + Shoot Length x % Germination

Dear Collogue,

Thanks a lot, I will do that.

Simple and powerful excel tool for seed germination measurements...You can measure 9 germination measurements in a single shot.

Youtube video tutorial: https://lnkd.in/eZGEudw

Download link for excel tool: https://lnkd.in/eSxCanD

(SVI-I = Seedling length X Germination & SVI-II = Seedling Dry Wt. X Germination)