The Reproductive Biology of Limonium sinuatum and L. perezii—A Perspective for Future Breeding

This review examines the reproductive biology of Limonium, mainly L. sinuatum and L. perezii, and explores the breeding strategies employed for these species. Limonium is one of the 20 most cultivated genera in the ornamental plant industry worldwide, with novelty sought in traits such as flower color, stem quality and disease resistance. Approximately 85% of the species in this genus present pollen/stigma dimorphism and self-incompatibility, presenting both challenges and opportunities for breeding. Breeding strategies such as interspecific hybridization, ploidy manipulation and chromosomal mutation have been used to increase the diversity of material available to breeders. In this review, we highlight how insights into reproductive biology, combined with advanced breeding techniques, can accelerate the development of fertile interspecific hybrids and broaden the genetic base for future Limonium breeding programs.