Self-incompatibility was first reported in

Answer: Option D

Self-incompatibility was first reported in Virbaseum phoeniceum.
Self-incompatibility is a widespread mechanism in flowering plants that prevents inbreeding and promotes outcrossing. The self-incompatibility response is genetically controlled by one or more multi-allelic loci, and relies on a series of complex cellular interactions between the self-incompatible pollen and pistil.
Verbascum phoeniceum is a dicot plant that begins with rosette growth in late spring and into summer. The first observation of self-incompatibility in plants was made on V. phoeniceum in the late 18^th century and published by Joseph Gottlieb Kölreuter.