extremely significantP < 0.01
For the spikelets per panicle, the means of AP3, AP8 and AP9 were 119.50, 124 and 144.73, respectively, which showed an extremely significant difference ( P < 0.01) between AP9 and AP3, and a significant difference ( P < 0.05) between AP8 and AP9 (Fig. 2c ).