Effect of temperatures on bolting and flowering, measured as
days to internode extension (bolting) and to flower bud
visibility, respectively, were studied in carrot (Daucus
carota) cultivar (cv.) "Nantes" grown in a controlled
environment. All carrot plants raised from stecklings
subjected to 10 weeks chilling at 3, 6 and 9 C bolted and
flowered under subsequently warmer temperatures (18 C).
However, only 33% of the stecklings given 1 and 12 C
temperature pretreatments for a similar duration flowered. No
flowering was observed for plants whose stecklings were
pre-treated at 15 C for 10 weeks or those exposed to 1 C for 5
weeks. Plants chilled for 10 weeks required less days to
bolting and flowering (P
Keywords
Bolting, Daucus carota, flowering, stecklings