Table 1.
The 44 assimilate distribution and spike morphology traits in this study.
| Running number | Trait | Affected plant parts |
|---|---|---|
| 1 | Grain A | main shoot |
| 2 | Grain C | main shoot |
| 3 | Grain B | main shoot |
| 4 | grain number for tillers | tiller |
| 5 | grain weight for tillers (g) | tiller |
| 6 | TKW (g) | tiller |
| 7 | grain area (mm2) | tiller |
| 8 | grain width (mm) | tiller |
| 9 | grain length (mm) | tiller |
| 10 | tiller number | tiller |
| 11 | tiller DW (g) | tiller |
| 12 | stem length (cm) | main shoot |
| 13 | leaf number | main shoot |
| 14 | leaf DW (g) | main shoot |
| 15 | main DW (g) | main shoot |
| 16 | spike length (cm) | main shoot |
| 17 | total spikelet number | main shoot |
| 18 | fertile spikelet number | main shoot |
| 19 | spike DW (g) | main shoot |
| 20 | main stem DW (g) | main shoot |
| 21 | grain number/spike | main shoot |
| 22 | grain weight/spike | main shoot |
| 23 | spike chaff (g) | main shoot |
| 24 | TKW (g) | main shoot |
| 25 | grain area (mm2) | main shoot |
| 26 | grain width (mm) | main shoot |
| 27 | grain length (mm) | main shoot |
| 28 | spikelet density | main shoot |
| 29 | spike fertility index | main shoot |
| 30 | grain weight/spike chaff | main shoot |
| 31 | spikelet fertility | main shoot |
| 32 | spike DW/main stem DW | main shoot |
| 33 | plant DW (g) | whole plant |
| 34 | grain number | whole plant |
| 35 | grain weight (g) | whole plant |
| 36 | TKW(g) | whole plant |
| 37 | grain area (mm2) | whole plant |
| 38 | grain width (mm) | whole plant |
| 39 | grain length (mm) | whole plant |
| 40 | harvest index | whole plant |
| 41 | tiller DW/main DW | tiller/main |
| 42 | Max.Floret A | main shoot |
| 43 | Max.Floret C | main shoot |
| 44 | Max.Floret B | main shoot |
Note: A and B indicate the third spikelet from the top (apical) and bottom (base) of the spike while C (central) indicates spikelets from the middle of the spike; DW, dry weight; TKW, thousand kernel weight. Grain number A, C, B is the grain number per spikelet at different spikelet positions. Max. Floret A, C, B is the maximum number of floret primordia per spikelet at different spikelet positions. Spike chaff is the DW of spike without grains. Main DW, main stem DW, total spikelet number mean the main shoot DW, main shoot DW without spike, spikelet number per spike on the main shoot, respectively. Tiller DW/main DW, spike DW/main stem DW, grain weight/spike chaff imply the ratios between tiller DW and main shoot DW, between spike DW and main stem DW, between grain weight and spike chaff. Spike fertility index is the ratio between grain number and spike chaff of the main shoot. Spikelet fertility is the ratio between the number of fertile spikelet and total spikelet. Harvest index is obtained as the ratio between grain weight and total aboveground dry weight. The attribution of traits suggests the traits from main shoot or tillers. Grain size traits (grain length, width, area, TKW) are measured for main shoot, tillers and the whole plant (including main shoot and tillers), respectively.