Wow, I can't believe it was back in 2010 that I first tried this, but due to the toxicity in the PVA Glue, it actually burnt off the flowers and the project died through lack of interest.
A Chilli flower dipped in PVA
The idea behind this is pretty straight forward, as with Capsicum and Chillies being self fertile, the idea of gluing the petals of the flower closed to stop cross pollination occurring. These plants are notorious for cross pollinating and there would then be no need to bag blossoms in order to collect 'pure' seed..
After 7 years growing Tomatoes and Capsicums 12 months of the year, I am more familiar with the Capsicum flowers and will be experimenting with this type of 'saving pure seed' again this Summer.