Isolation distance for production of certified seeds of Okra is

Isolation distance for production of certified seeds of okra is 200 m.
Isolation distance is the minimum separation required between two or more varieties of the same species for the purpose of keeping seed pure.
Isolation prevents unwanted cross-pollination and is the primary practice required to keep varieties true to type. Isolation begins with an understanding of the distance required to limit or eliminate chances of cross-pollination between two varieties of the same species.