Fig. 5 Relationship between specific leaf nitrogen at anthesis and green leaf area at maturity for nine sorghum hybrids grown under terminal water deficit (r = 0.68, n = 24, P < 0.001). Total N content was the sum of green leaf N content, dead leaf N content, stem N content, and panicle N content. In the case of AQL39/RQL36, AQL39/RQL12, and AQL41/RQL12, one of these components was missing, preventing the calculation of SLN for those samples. Hence, there are only 24 points on the graph out of a potential of 27 points
