I’m not an expert on okra, but I’ve grown my share. Just some of the criteria I look for in an okree plant. =)
Bushing versus non bushing trait - Okra picking is a hot, itchy business, and never any fun for those few people very allergic to the Okra sting. Because of this some growers like to grow their okra closely spaced together in a row garden layout. The lower leaves are removed as well as any suckering. This leaves a few nodes at the top with leaves and flowers and very easy to see and easy to harvest okra pods. As the plant grows new nodes on top, the same number of nodes below have the leaves removed to keep up with the upward growth. For this type of grower, selections that do not sucker and want to bush out as much are preferred over those that want to go to bush form. One of the most productive commercial garden varieties is jambalaya but it also has some of the strongest okra stings you can get and have seen some growers who could handle growing and harvesting it one season come down with a bad reaction the next to the point they stop growing that one variety.
Tall versus short growth habit - A shorter growing okra has longer harvest period if using the row garden layout. Once okra gets too tall, you have to bend them over to try and get to the pods which can lead to damage to the plant. That or start pulling out ladders!
Pod length to woodiness - A lot of the short fat okra pod varieties are much more difficult to tell with a quick look at the pods if they are at optimal harvest size or have crossed over and gone to a woody texture. For this reason a lot of growers prefer the longer pod varieties. Selections are usually for those plants that can grow the longest pods before woodiness affects the pods. This is hampered at the end of the season when natural environmental stress tends to make the pods go woody quicker.
End use for pods - Do you want to fry okra? you want a lot of surface area for breading to stick to and shorter fatter pods and pods with spine ridges give more surface area. Do you want to pickle okra? You want smooth pods without spine ridges so you can fit more pods into a jar for pickling and have less wasted space.
Pod color - Not as important if you consider once cooked most colored okra goes green when cooked. But if you want to catch the eye and sell seeds from a Baker Creek catalog then having colored pods will help you sell to someone a bit bored with the standard green varieties.
Based on all the above criteria, I have kept a shorter growing, spined, less powerful sting okra for general use that has one of the longer pod lengths before they go woody, the Burmese variety.
Based on all the above criteria, I have kept a shorter growing, smooth, less powerful sting okra for pickling use that has one of the longer pod lengths before they go woody, the Choppee variety.
Others will have other criteria and varieties that suit their needs better. But if you don’t have a lot of experience in selecting an okra, this might help someone in developing their own selections from their okra landrace/s.