An organism can be defined as "Biologically Successful" if it passes on its genes to future generations.
Cultivars show various degrees of biological success. It can be measured by the number of descendants. Relative success can be seen by comparing the number of registered offspring to other cultivars in the same generation.
The most successful cultivars make up the foundation of the current gene pool. They have been named "Foundation Irises"
Here is a list of years for which success has been evaluated
Relative Biological Success of 1950 Registration Cultivars (under construction) * In 1950 there were 269 registrations of tall bearded irises * 156 Had no d...
Relative Biological Success of 1960 Registration Cultivars * In 1960 there were 413 registrations of tall bearded irises * 248 Had no descendants that were ...
Relative Biological Success of 1970 Registration Cultivars (under construction) * In 1970 there were ### registrations of tall bearded irises * ## Had no de...
Relative Biological Success of 1978 Registration Cultivars (under construction) * In 1978 there were ### registrations of tall bearded irises * ## Had no de...
Relative Biological Success of 1979 Registration cultivars. * In 1979 there were 337 registrations of tall bearded irises * 159 Had no descendants that were...
Relative Biological Success of 1980 Tall bearded Registration cultivars. * In 1980 there were 269 registrations of tall bearded irises * 137 Had no descenda...
Relative Biological Success of 1981 Registration Cultivars (under construction) * In 1981 there were 269 registrations of tall bearded irises * ## Had no de...
Relative Biological Success of 1990 Registration Cultivars (under construction) * In 1990 there were ## registrations of tall bearded irises * ## Had no des...
Relative Biological Success of 1994 Registration Cultivars (under construction) * In 1994 there were ### registrations of tall bearded irises * ## Had no de...