It is a worthwhile effort to pollenate any area showing the white,typical of stigma surface. Sometimes the tubes to the ovary will be complete,sometimes not.I have pollinated some which appeared very unlikely to be functional,but which worked.
The greater the number you have, of a single variety,the greater the liklihood, that you will see female flower parts, in the doubles.
Your pictures show,that indeed you are doing something right.
Del

Br. Arif, I have already done that. I found stigma on one of my doubles. I pollinated it with Dancing Queen. I got about 25 seedlings which are now in their second year.The seeds were very healthy and thick:just like 'sheesham' seeds.Today I detected one more orange double with a defomred stigma, let's see it takes pollen or not.In fact, these doubles are semi-doubles. I don't think fully doubles are bestowed with a female organ.

This
{{gwi:398729}}

This
{{gwi:398732}}

It is worth trying anyway.