. 2021 Oct 18;12:748523. doi: 10.3389/fpls.2021.748523

Table 2.

Effects of Se fertilization on the grain yield and yield components of wheat in the two seasons.

Seasons	Treatments	Grain yield (t·ha⁻¹)			Biomass (t·ha⁻¹)			Harvest index (%)
		BGW-1	BGW-2	WGW-2	BGW-1	BGW-2	WGW-2	BGW-1	BGW-2	WGW-2
2018–2019	T0	5.29 ± 0.22^Ca	4.56 ± 0.13^Cb	5.33 ± 0.13^Ca	17.2 ± 0.40^Ca	16.2 ± 0.38^Bb	17.3 ± 0.31^Ba	30.7 ± 0.62^Ca	28.2 ± 0.30^Cb	30.8 ± 0.25^Ca
	T1	5.84 ± 0.12^Ba	5.07 ± 0.18^Bb	5.89 ± 0.13^Ba	18.6 ± 0.35^ABa	17.1 ± 0.52^ABb	18.2 ± 0.30^ABa	31.5 ± 0.32^BCc	29.6 ± 0.35^Bb	32.3 ± 0.31^Ba
	T2	6.52 ± 0.13^Aa	5.56 ± 0.10^Ab	6.43 ± 0.14^Aa	19.5 ± 0.57^Aa	18.1 ± 0.46^Ab	19.2 ± 0.49^Aa	33.5 ± 0.35^Aa	30.7 ± 0.20^Ab	33.4 ± 0.20^Aa
	T3	5.90 ± 0.21^Ba	5.10 ± 0.23^Bb	5.82 ± 0.18^Ba	18.5 ± 0.40^ABa	17.3 ± 0.50^ABb	18.0 ± 0.38^Bab	31.9 ± 0.40^Ba	29.5 ± 0.61^Bb	32.4 ± 0.36^Ba
	T4	5.75 ± 0.17^Ba	4.90 ± 0.14^BCb	5.74 ± 0.22^BCa	18.1 ± 0.56^BCa	16.8 ± 0.40^Bb	18.1 ± 0.55^Ba	31.7 ± 0.25^BCa	29.1 ± 0.21^BCb	31.8 ± 0.21^Ba
2019–2020	T0	5.93 ± 0.27^Ca	4.79 ± 0.19^Cb	5.90 ± 0.12^Ca	19.0 ± 0.42^Ca	16.8 ± 0.55^Cb	19.0 ± 0.53^Ba	31.3 ± 0.76^Ca	28.5 ± 0.35^Cb	31.0 ± 0.32^Ca
	T1	6.68 ± 0.17^Ba	5.31 ± 0.15^Bb	6.51 ± 0.17^Ba	20.3 ± 0.21^Ba	17.7 ± 0.36^BCb	20.0 ± 0.21^ABa	32.9 ± 0.55^ABa	30.0 ± 0.26^Bb	32.5 ± 0.50^Ba
	T2	7.28 ± 0.20^Aa	5.99 ± 0.19^Ab	7.24 ± 0.25^Aa	21.4 ± 0.35^Aa	18.9 ± 0.25^Ab	21.2 ± 0.55^Aa	34.1 ± 0.45^Aa	31.8 ± 0.59^Ab	34.2 ± 0.41^Aa
	T3	6.52 ± 0.12^Ba	5.34 ± 0.20^Bb	6.48 ± 0.22^Ba	20.1 ± 0.26^Ba	17.9 ± 0.46^ABb	19.8 ± 0.47^Ba	32.5 ± 0.21^BCa	29.8 ± 0.50^Bb	32.6 ± 0.40^Ba
	T4	6.35 ± 0.28^BCa	5.22 ± 0.10^BCb	6.29 ± 0.14^BCa	19.8 ± 0.49^BCa	17.6 ± 0.26^BCb	19.7 ± 0.40^Ba	32.0 ± 0.61^BCa	29.6 ± 0.15^Bb	32.0 ± 0.35^BCa
		Spike number (m ² )			Grain number (spike⁻¹)			Thousand kernels weight (g)
2018–2019	T0	312.0 ± 13.9^Ac	385.1 ± 13.0^Ab	437.3 ± 16.7^Aa	63.9 ± 1.25^Ba	43.4 ± 0.76^Bb	42.7 ± 0.67^Bb	39.2 ± 0.51^Bb	38.9 ± 0.98^Bb	41.3 ± 0.89^Ba
	T1	310.7 ± 15.1^Ac	400.0 ± 16.0^Ab	449.7 ± 18.3^Aa	66.2 ± 1.21^ABa	46.7 ± 1.55^ABb	44.2 ± 0.69^ABc	41.8 ± 0.57^Ab	39.9 ± 1.01^ABc	43.6 ± 0.71^ABa
	T2	332.0 ± 14.4^Ac	410.3 ± 10.2^Ab	468.6 ± 9.97^Aa	67.7 ± 0.93^Aa	47.4 ± 1.50^Ab	45.8 ± 0.79^Ab	42.7 ± 1.30^Aab	42.0 ± 0.85^Ab	44.0 ± 0.87^Aa
	T3	313.2 ± 14.2^Ac	394.7 ± 12.2^Ab	446.2 ± 10.9^Aa	66.5 ± 1.10^ABa	46.3 ± 1.49^ABb	44.2 ± 0.85^ABb	41.6 ± 0.65^Aab	41.1 ± 1.20^ABb	43.4 ± 1.17^ABa
	T4	312.1 ± 15.8^Ac	392.0 ± 13.9^Ab	443.5 ± 12.0^Aa	65.3 ± 0.87^ABa	45.7 ± 1.15^ABb	43.9 ± 0.55^Bb	41.5 ± 1.15^ABab	40.3 ± 1.21^ABb	43.3 ± 0.95^ABa
2019–2020	T0	344.0 ± 8.00^Ac	416.0 ± 8.00^Ab	472.0 ± 13.9^Aa	64.0 ± 1.59^Ba	44.3 ± 1.81^Bb	44.1 ± 1.03^Bb	39.6 ± 0.95^Bb	38.2 ± 0.68^Cb	41.7 ± 0.64^Ba
	T1	352.0 ± 8.00^Ac	429.3 ± 4.62^Ab	485.3 ± 12.2^Aa	66.1 ± 1.42^ABa	46.3 ± 1.33^ABb	46.0 ± 1.06^ABb	42.2 ± 0.86^ABa	39.3 ± 0.61^BCb	42.9 ± 0.83^ABa
	T2	365.3 ± 4.62^Ac	437.3 ± 16.0^Ab	496.0 ± 16.0^Aa	68.2 ± 1.00^Aa	48.3 ± 1.22^Ab	48.3 ± 1.45^Ab	42.3 ± 0.94^Aab	41.5 ± 0.85^Ab	44.4 ± 0.81^Aa
	T3	349.3 ± 12.2^Ac	421.3 ± 4.60^Ab	488.0 ± 13.8^Aa	66.0 ± 1.20^ABa	46.0 ± 1.40^ABb	45.1 ± 1.42^ABb	41.6 ± 1.27^ABab	40.5 ± 0.50^ABb	43.3 ± 0.64^ABa
	T4	346.7 ± 9.24^Ac	418.7 ± 16.7^Ab	480.0 ± 16.0^Aa	65.1 ± 1.22^ABa	45.4 ± 1.56^ABb	44.3 ± 1.21^Bb	41.4 ± 1.04^ABb	40.4 ± 0.66^ABb	43.5 ± 1.29^ABa

Different capital letters in the same column indicate a significant difference at α = 0.01. Different lowercase letters in the same row indicate a significant difference at α = 0.05. T0, no Se fertilizer; T1, 1,080 g·ha⁻¹ pure Se; T2, 2,160 g·ha⁻¹ pure Se; T3, 3,240 g·ha⁻¹ pure Se; T4, 4,320 g·ha⁻¹ pure Se; BGW-1, black-grained wheat genotype Xihei 88; BGW-2, black-grained wheat genotype Heidali; WGW-2, white-grained wheat cultivar Pubing 151.