PROMOTIVE EFFECTS OF SEED VERNALIZATION ON FLOWERING AND POD SETTING OF SOME BROAD BEAN CULTIVARS

To investigate a possibility of regulating flowering time for breeding and for a forcing culture in Japan, the effects of seed vernalization on flowering and pod setting of 7 Japanese broad bean cultivars were investigated.
Seven cultivars of broad bean were used in this experiment.
After germinated seeds of these cultivars were chilled at 2EC in the dark for 30 days, they were seeded into black plastic pots each on November 2, 1995. As a control germinated seeds of each cultivar were also seeded in the same day.
They were grown in glasshouse where a minimum night temperature was kept at 25EC until their emergence became uniform.
Then they were transferred to plastic house on November 20 and grown there.
Budding, flowering and pod setting of broad beans were promoted by the chilling treatment of seeds.
There were cultivar differences in their effects.
Though in the case of ‘Wase-soramame’ pod setting of control plants was on March 28, but the pod setting of treated plants was on January 2 and then both flowering and pod setting were promoted highly by the chilling.
In the treated plots pod settings of ‘Umami-nagasaya’ and ‘Midori-issun’,’Sanuki-nagasaya’ and ‘Sanuki-issun’, and ‘Joyo-nagasaya’ occurred by January, February, and March, respectively.

VIII International Symposium on Timing Field Production in Vegetable Crops

Y. Fujime, Y. Mesuda, N. Okuda, W. Varanyanond

broad bean, flowering, pod setting, seed vernalization

https://doi.org/10.17660/ActaHortic.2000.533.7