Phenotypic values of grain size traits of main crop and ratoon rice under two environments

All the 159 indica rice accessions were planted, with a randomized complete block design, in Wuhan in 2021. This experiment was replicated two times in different fields, namely environments 1 and 2. Each material was planted in one plot with 10 seedlings, row spacing was 16.7 cm × 20 cm, and one line empty between cells. At yellow ripening stage, grain width (GW) (mm), grain length (GL) (mm), and thousand grain weight (TGW) (g) for each accession in mian crop (MC) and ratoon rice (RR) were measured for three times. GL in MC is abbreviated as GL-MC, and it is true for other traits.