Effects of mepiquat chloride on yield and main properties of cottonseed under different plant densities

Table 4 Effects of mepiquat chloride (MC) on cottonseed vigor characters under different plant densities in Sikang 1

MC	Plant density /(plant·m⁻²)	Germination percentage /%		Fresh weight of seeding /(g·plant⁻¹)		Germination index (GI)		Vigor index (VI)
MC	Plant density /(plant·m⁻²)	2013	2014	2013	2014	2013	2014	2013	2014
CK	1.35	52.7 a	51.0 a	0.48 a	0.60 a	4.6 a	5.0 a	2.2 a	2.4 a
	2.55	54.0 a	50.0 a	0.47 a	0.51 ab	4.1 a	4.2 a	2.0 a	2.1 a
	3.75	50.0 a	44.0 a	0.46 a	0.52 ab	4.1 a	3.3 a	1.8 a	2.0 a
	4.95	38.0 b	34.0 b	0.43 a	0.41 b	2.8 a	2.8 a	1.2 a	1.8 a
MC 135 g·hm^− 2	1.35	72.7 a	62.0 a	0.53 a	0.55 a	5.8 a	5.2 a	3.1 a	3.0 a
	2.55	66.7 ab	60.0 ab	0.50 ab	0.60 a	5.8 a	4.8 a	2.9 ab	2.9 a
	3.75	58.0 bc	54.0 b	0.48 bc	0.53 a	4.1 a	4.5 a	2.0 ab	2.2 a
	4.95	54.0 c	48.0 c	0.45 c	0.55 a	3.9 a	3.4 a	1.8 b	1.9 b
Source of variance
Plant density		*	**	*	*	ns	ns	*	*
MC		*	*	*	*	ns	ns	*	*
Plant density × MC		ns	ns	ns	ns	ns	ns	ns	ns

Values followed by the different letters within the same column are significant differences at 0.05 probability level; * and ** represent significant differences at 0.01 and 0.05 probability level, respectively; ns represents no significant differences

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