The Free Gibberellins of Cichorium intybus L. Root: Identification and Changes During Vernalization

Cichorium intybus L – cultivation, processing, utility, value addition and biotechnology, with an emphasis on current status and future prospects

“…The so‐called early cultivars, ie those that form their chicory heads early in the postharvest culture period, can flower in vitro without prior cold treatment 118. Previous research has shown that gibberellins are not involved in stem elongation and flowering of chicory root explants in vitro ,119, 120 and the gibberellin composition and concentration in chicory roots change during the growing season and as a result of vernalisation treatment 121. 122 Recent research has shown that chicory root explants can be cultured in vitro under various photoperiodic regimes for the induction of different stem types 123…”

Vernalization and Gibberellin Physiology of Winter Canola (Endogenous Gibberellin (GA) Content and Metabolism of [3H]GA1 and [3H]GA20

“…Although a few studies have investigated the endogenous GA content of vernalized compared to nonvernalized plants using either bioassays or GC-MS, results have been variable (Suge, 1970;Michniewicz et al, 1981;Joseph et al, 1983;Lin and Stafford, 1987). Bioassay results with Brassica napus (Margara, 1963), Brassica rapa (Suge and Takahashi, 19821, chicory (Joseph et al, 19831, radish (Suge, 1970;Michniewicz et al, 1981), and winter wheat (Chailakhyan and Lozhnikova, 1962;Reda et al, 1978) have indicated the presence of additional GA-like substances or increases of certain GA-like substances in vernalized tissues.…”