Table 1.
Dry matter accumulation at the pre-anthesis and post-anthesis stages in different elevated-temperature treatments and the effect of elevated temperature treatments on HI in 2015 and 2016.
| Variety | Treatment | 2015 | 2016 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Dry matter accumulated(g/m2) | Harvest Index (HI) | Dry matter accumulated(g/m2) | Harvest Index (HI) | ||||||
| Pre-anthesis | Post-anthesis | Whole duration | Pre-anthesis | Post-anthesis | Whole duration | ||||
| HHZ | CK | 973.9 ± 46.2 a | 558.3 ± 114.4 a | 1,532.2 ± 78.8 a | 54.1 ± 0.5 a | 693.1 ± 29.2 a | 639.4 ± 110.6 a | 1,332.5 ± 136.8 a | 43.5 ± 1.6 a |
| NW | 935.3 ± 45.8 a | 414.6 ± 43.7 a | 1,349.9 ± 80.0 a | 51.4 ± 1.1 a | 738.4 ± 52.5 a | 541.5 ± 95.0 a | 1,279.9 ± 53.8 a | 37.0 ± 2.9 ab | |
| DW | 988.9 ± 26.3 a | 426.1 ± 20.7 a | 1,415.1 ± 45.0 a | 52.6 ± 0.4 a | 655.5 ± 19.6 a | 367.6 ± 46.7 a | 1,023.0 ± 35.7 b | 32.1 ± 2.1 b | |
| AW | 940.3 ± 11.5 a | 445.4 ± 85.8 a | 1,385.6 ± 90.3 a | 41.0 ± 3.8 b | 731.2 ± 67.8 a | 537.3 ± 135.2 a | 1,268.5 ± 92.6 a | 15.1 ± 5.4 c | |
| SY63 | CK | 1,192.9 ± 58.2 a | 533.8 ± 36.2 a | 1,726.7 ± 83.8 a | 54.2 ± 0.8 a | 921.7 ± 25.4 a | 766.2 ± 130.4 a | 1,687.9 ± 109.1 a | 43.4 ± 0.6 a |
| NW | 1,328.2 ± 51.7 a | 569.5 ± 33.4 a | 1,897.7 ± 49.6 a | 51.6 ± 1.5 ab | 934.2 ± 57.9 a | 504.7 ± 18.2 a | 1,438.9 ± 52.3 a | 31.3 ± 4.9 ab | |
| DW | 1,276.0 ± 57.1 a | 500.3 ± 95.5 a | 1,776.3 ± 47.2 a | 54.5 ± 0.5 a | 971.2 ± 76.2 a | 439.8 ± 64.7 a | 1,411.0 ± 35.6 a | 36.9 ± 4.8 ab | |
| AW | 1,367.8 ± 28.2 a | 513.0 ± 199.4 a | 1,840.1 ± 172.5 a | 46.5 ± 4.6 b | 999.7 ± 58.3 a | 553.0 ± 138.8 a | 1,552.7 ± 128.9 a | 26.2 ± 3.9 b | |
| YLY6 | CK | 1,228.2 ± 77.3 a | 727.1 ± 91.3 a | 1,955.3 ± 30.6 a | 56.5 ± 0.4 a | 1,003.5 ± 34.5 a | 692.4 ± 47.8 a | 1,695.9 ± 33.6 a | 52.5 ± 0.8 a |
| NW | 1,327.5 ± 64.4 a | 445.7 ± 93.6 a | 1,773.2 ± 81.9 b | 55.0 ± 0.8 a | 1,093.2 ± 82.6 a | 608.2 ± 52.7 a | 1,701.3 ± 75.7 a | 44.0 ± 3.1 ab | |
| DW | 1,187.9 ± 27.5 ab | 568.9 ± 50.8 a | 1,756.8 ± 51.9 b | 53.6 ± 1.1 a | 1,011.1 ± 69.2 a | 489.1 ± 160.1 a | 1,500.2 ± 108.3 a | 49.0 ± 1.7 a | |
| AW | 1,105.8 ± 41.1 b | 573.2 ± 54.1 a | 1,679.0 ± 33.2 b | 47.5 ± 2.4 b | 1,056.8 ± 46.1 a | 471.3 ± 57.2 a | 1,528.1 ± 23.0 a | 27.4 ± 10.8 b | |
| LYPJ | CK | 1,267.4 ± 48.0 ab | 392.9 ± 80.5 a | 1,660.4 ± 63.8 a | 54.9 ± 0.5 a | 1,129.4 ± 60.3 a | 483.3 ± 52.4 a | 1,612.7 ± 54.8 a | 40.9 ± 0.9 a |
| NW | 1,231.7 ± 17.2 ab | 538.6 ± 43.8 a | 1,770.3 ± 52.9 a | 53.6 ± 1.2 a | 1,121.2 ± 48.0 a | 478.3 ± 57.9 a | 1,599.5 ± 31.9 a | 18.9 ± 3.6 b | |
| DW | 1,327.2 ± 61.7 a | 514.1 ± 116.2 a | 1,841.3 ± 72.3 a | 48.1 ± 1.3 ab | 983.5 ± 45.6 b | 474.3 ± 36.0 a | 1,457.8 ± 76.7 a | 24.1 ± 5.0 b | |
| AW | 1,199.5 ± 44.5 b | 494.5 ± 61.0 a | 1,694.0 ± 35.9 a | 39.0 ± 8.4 b | 993.9 ± 49.6 b | 640.1 ± 92.8 a | 1,634.0 ± 57.0 a | 15.6 ± 1.4 b | |
In the column for each variety, means followed by different letters are significantly different at the 0.05 probability level according to the least significant difference (LSD) test. Abbreviations: HHZ, Huanghuazhan; SY63, Shanyou63; YLY6, Yangliangyou6; LYPJ, Liangyoupeijiu. CK, ambient control; NW, night-time warming; DW, daytime warming; AW, and all-day warming treatments. Eight hills were used to measure the biomass in the pre-anthesis and ten hills were used to measure the biomass and HI in the maturity stage.