Table 1.

Description of samples collected for RNA-Seq at different panicle development stages

Symbol	Sampling points	Length of young panicle	Apical spikelet development stage
S1	Young panicle	1mm~2mm	Formation of palea, elongation of sterile lemma and lemma
S2	Young panicle	2mm~5mm	Formation of stamen and pistil primordia
S3	Young panicle	5mm~10mm	Stamen and pistil begin to differentiate, palea and lemma close up gradually
S4	Young panicle	10mm~15mm	Formation of pollen and ovule
SL	Sterile lemma	—	Booting stage