Nonstructural Carbohydrates in Axillary Branches and Main Stem of Senescent and Nonsenescent Sorghum Types

(...) The objective of this study was to test the hypothesis that nonsenescent hybrids of semidwarf sorghum accumulate more nonstructural carbohydrates in branches and in the main stem than senescent hybrids after black layer. Plants were labeled (exposed to 14 CO 2 ) 14 d before, at, and 14 d after black layer formation under field conditions. Nonstructural carbohydrates in branches and in lower and upper portions of the main stem were sampled 5 or 7 d after labeling (...)