. 2025 Mar 28;16:1521113. doi: 10.3389/fpls.2025.1521113

Table 1.

Effect of irrigation on the grain yield and yield components of black-grained wheat in different Se soil in two seasons.

Seasons	Treatments	Grain yield (t·ha^-1)				Spike number (m²)
		BGW-1		BGW-2		BGW-1		BGW-2
		Se₀	Se₂₁₆₀	Se₀	Se₂₁₆₀	Se₀	Se₂₁₆₀	Se₀	Se₂₁₆₀
2018-2019	W₀	4.39 ± 0.15^Bb	5.09 ± 0.14^Ba	3.77 ± 0.12^Bb	4.32 ± 0.14^Ba	264.6 ± 10.8^Ba	281.6 ± 10.4^Ba	339.3 ± 11.5^Ba	360.0 ± 9.85^Ba
	W₁	4.70 ± 0.13^ABb	5.61 ± 0.15^Ba	4.04 ± 0.11^Bb	4.80 ± 0.16^Ba	288.0 ± 10.1^ABa	305.7 ± 11.9^ABa	360.0 ± 10.8^ABa	383.8 ± 11.8^ABa
	W₂	5.29 ± 0.22^Ab	6.52 ± 0.12^Aa	4.56 ± 0.13^Ab	5.56 ± 0.10^Aa	312.0 ± 13.9^Aa	332.0 ± 14.4^Aa	385.1 ± 13.0^Aa	410.3 ± 10.2^Aa
2019-2020	W₀	5.00 ± 0.16^Bb	5.78 ± 0.15^Ba	3.98 ± 0.16^Bb	4.60 ± 0.12^Ba	275.3 ± 13.0^Ba	294.7 ± 10.8^Ba	350.7 ± 9.00^Ba	372.0 ± 13.9^Ba
	W₁	5.32 ± 0.15^ABb	6.32 ± 0.14^Ba	4.13 ± 0.15^Bb	5.11 ± 0.15^Ba	305.2 ± 7.57^Ba	324.2 ± 8.40^Ba	378.2 ± 10.0^Ba	400.5 ± 11.3^ABa
	W₂	5.93 ± 0.27^Ab	7.28 ± 0.20^Aa	4.79 ± 0.19^Ab	5.99 ± 0.19^Aa	344.0 ± 8.00^Aa	365.3 ± 4.62^Aa	416.0 ± 8.00^Aa	437.3 ± 16.0^Aa
		Kernel number (spike^-1)				Thousand kernels weight (g)
2018-2019	W₀	59.5 ± 0.85^Bb	61.5 ± 0.82^Ba	39.0 ± 0.57^Bb	41.2 ± 0.51^Ba	37.5 ± 0.72^Ab	39.6 ± 0.59^Aa	37.3 ± 0.81^Ab	40.1 ± 0.56^Aa
	W₁	60.1 ± 0.99^Bb	63.2 ± 0.56^Ba	40.2 ± 0.78^Bb	43.1 ± 0.71^Ba	38.1 ± 0.64^Ab	40.9 ± 0.91^Aa	37.9 ± 0.62^Ab	41.3 ± 0.59^Aa
	W₂	63.9 ± 1.25^Ab	67.7 ± 0.93^Aa	43.4 ± 0.76^Ab	47.4 ± 1.50^Aa	39.2 ± 0.51^Ab	42.7 ± 1.30^Aa	38.9 ± 0.98^Ab	42.0 ± 0.85^Aa
2019-2020	W₀	60.0 ± 0.46^Bb	63.0 ± 0.77^Ba	40.1 ± 0.42^Bb	42.1 ± 0.42^Ba	37.7 ± 0.75^Aa	40.2 ± 0.65^Aa	36.4 ± 0.49^Ab	39.4 ± 0.68^Aa
	W₁	60.3 ± 0.81^Bb	64.8 ± 1.05^Ba	40.8 ± 0.64^Bb	43.7 ± 0.74^Ba	38.4 ± 0.85^Ab	41.5 ± 0.80^Aa	37.1 ± 0.59^Ab	40.7 ± 0.65^Aa
	W₂	64.0 ± 1.59^Ab	68.2 ± 1.00^Aa	45.1 ± 1.51^Ab	48.3 ± 1.22^Aa	39.6 ± 0.95^Ab	42.3 ± 0.94^Aa	38.2 ± 0.68^Ab	41.5 ± 0.85^Aa

Values with different capital letter in the same column are significantly different (α = 0.01). Values with different small letters in the same row are significantly different (α = 0.05). W₀, no irrigation throughout the entire growing period; W₁, irrigated at the wintering stage (Feekes 3.0); W₂, irrigated at both the wintering and greening stage (Feekes 4.0); Se₀, no Se fertilizer; Se₂₁₆₀, 2160 g·ha^-1 pure Se; BGW-1, black-grained wheat Xihei 88; BGW-2, black-grained wheat Heidali.