One week of cold treatment affects the seed production offum2.2 plants
Arabidopsis Col-0 and fum2.2 plants grown in control conditions and plants that received one week of cold treatment after 8 weeks growth, were transferred into a growth cabinet with a 16-hour photoperiod to induced flowering. Plants were allowed to set seed and seed yield estimated (Figure 8). No significant difference was seen between the seed yield of Col-0 plants maintained at 20oC and those that experienced a cold treatment. In contrast, when fum2.2 plants were exposed to cold for 7 days before being transferred to long photoperiods, the final seed yield was significantly reduced. This reduction was due to a lower number of siliques being formed, rather than a reduction in the number of seeds per silique.