2.3 Determination of Starch Content
The 8th leaf sheath at the 9.5 leaf stage was sampled in the early
evening. The starch content was determined by a coupled enzyme assay
using an ENZYTEC Starch kit (Code No. E1268, r-biopharm,
http://www.r-biopharm.com/) as described previously (Morita et al.,
2015).