Early flowering species - model plants for studies of ontogenesis in vitro

Chenopodium rubrum L. and Chenopodium murale L. are two annual weed species with different photoperiodic demands. The use of species from the same genus, with a similar type of morphogenesis but with different photoperiodic demands, is valuable for comparative studies of flowering. In addition, being classified as early flowering species, these two species represent model plants suitable for studies of ontogenesis in vitro. This review describes part of our results obtained on these two model plants under the guidance of Professor Ljubinka Ćulafić, starting with early development, such as somatic embryogenesis, followed by photoperiodic and hormonal regulation of flowering, to the photoperiodic control of different stages of ontogenesis.