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

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

MC Plant density /(plant·m−2) Germination percentage /% Fresh weight of seeding /(g·plant−1) Germination index (GI) Vigor index (VI)
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
  1. 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