Table 5.

Spike-setting characteristics among different temperature treatments (compared with the CK of the same variety) after harvest.

Variety	Treatment	Grains per Spike	Grain−Setting Loss Rate	Grains per Upper Spikelet	Upper Spikelet Grain−Setting Loss Rate	Grains per Middle Spikelet	Middle Spikelet Grain−Setting Loss Rate	Grains per Lower Spikelet	Lower Spikelet Grain−Setting Loss Rate
YN19	72 h −2 °C	3.40 ± 1.00 e	52.02%	0.00 ± 0.00 g	100.00%	1.40 ± 1.14 g	92.55%	2.00 ± 2.35 bcd	80.00%
	72 h 0 °C	4.00 ± 0.00 e	51.26%	0.00 ± 0.00 g	100.00%	4.00 ± 0.71 f	78.72%	0.00 ± 0.00 f	100.00%
	72 h 2 °C	4.20 ± 0.58 e	51.01%	0.00 ± 0.00 g	100.00%	4.20 ± 1.63 f	77.66%	0.00 ± 0.00 f	100.00%
	48 h −2 °C	9.60 ± 0.58 d	44.19%	0.00 ± 0.00 g	100.00%	7.80 ± 2.95 cde	58.51%	0.60 ± 0.55 def	94.00%
	48 h 0 °C	9.20 ± 0.00 d	44.70%	1.20 ± 0.84 fg	91.30%	7.40 ± 0.55 de	60.64%	1.80 ± 1.64 bcdef	82.00%
	48 h 2 °C	13.80 ± 0.58 c	38.89%	1.40 ± 0.89 fg	89.86%	10.00 ± 1.22 c	46.81%	2.40 ± 2.51 bc	76.00%
	24 h −2 °C	14.80 ± 1.00 c	37.63%	4.60 ± 1.52 cd	66.67%	9.00 ± 0.71 cde	52.13%	1.20 ± 1.1 bcdef	88.00%
	24 h 0 °C	20.20 ± 1.00 b	30.81%	5.60 ± 1.52 bc	59.42%	12.00 ± 1.41 b	36.17%	2.60 ± 1.52 b	74.00%
	24 h 2 °C	21.40 ± 0.58 b	29.29%	6.60 ± 1.34 b	52.17%	12.40 ± 0.89 b	34.04%	2.40 ± 0.89 bc	76.00%
	ck	44.60 ± 0.58 a		13.80 ± 0.84 a		18.80 ± 1.30 a		10.00 ± 1.87 a
XM26	72 h −2 °C	3.00 ± 0.00 f	53.79%	0.00 ± 0.00 g	100.00%	3.00 ± 0.71 fg	84.38%	0.00 ± 0.00 f	100.00%
	72 h 0 °C	4.00 ± 1.00 f	52.53%	0.00 ± 0.00 g	100.00%	4.00 ± 1.00 f	79.17%	0.00 ± 0.00 f	100.00%
	72 h 2 °C	4.00 ± 1.00 f	52.53%	0.00 ± 0.00 g	100.00%	4.00 ± 1.00 f	79.17%	0.00 ± 0.00 f	100.00%
	48 h −2 °C	8.00 ± 1.00 e	47.47%	0.60 ± 1.34 fg	95.77%	7.20 ± 3.70 e	62.50%	0.20 ± 0.45 ef	97.96%
	48 h 0 °C	9.80 ± 0.58 de	45.20%	1.20 ± 0.84 fg	91.55%	7.80 ± 0.83 cde	59.38%	0.80 ± 0.84 cdef	91.84%
	48 h 2 °C	14.00 ± 0.58 bc	39.90%	1.20 ± 0.84 fg	91.55%	10.00 ± 1.58 c	47.92%	2.80 ± 0.84 b	71.43%
	24 h −2 °C	12.40 ± 1.00 cd	41.92%	2.80 ± 1.1 e	80.28%	9.00 ± 1.41 cde	53.13%	0.60 ± 0.89 def	93.88%
	24 h 0 °C	15.80 ± 0.58 b	37.63%	3.60 ± 0.89 de	74.65%	9.60 ± 1.34 cd	50.00%	1.40 ± 0.55 bcdef	85.71%
	24 h 2 °C	15.00 ± 0.58 bc	38.64%	3.80 ± 1.3 de	73.24%	9.80 ± 2.28 c	48.96%	2.60 ± 1.14 b	73.47%
	ck	45.60 ± 0.58 a		14.20 ± 1.3 a		19.20 ± 1.10 a		9.80 ± 1.79 a

Data represent mean ± SE (n = 3). Different letters following the data within each column mean significant difference at p ≤ 0.05.