Table I.

Rate of starch synthesis and degradation in LD, LS, SD, and SL

PhotoperiodRate of Starch Metabolism
SynthesisaDegradationb
μmol glc g−1 FW h−1
LD6.41 ± 0.4713.19 ± 1.61
LS5.34 ± 1.334.14 ± 0.19
SD8.30 ± 1.374.39 ± 0.40
SL8.01 ± 0.328.22 ± 2.69
  • a Values are slope ± se of a linear regression of all the daytime values of starch over the duration of the day.

  • b Values are slope ± se of a linear regression of all the nighttime values of starch over the duration of the night.