In field, the correlations studies expressed in Table 9(a) indicate that panicle length (0.217) panicle number (0.191), spikelet
per panicle (0.812), well field grains per panicle (0.189), HD grain weight (0.336), TDMP (0.468) and HI (0.141) were
positively correlated with grain yield. All the parameters showed a positive correlation with economic yield under red light
condition. Under low light condition, HI (0.991*) had a significant positive correlation with grain yield. Panicle length