Table 3 Cotton seed micronutrients reserves as influenced by plant density, foliar boron nutrition and mepiquat chloride application.

From: Effect of Plant Density, Boron Nutrition and Growth Regulation on Seed Mass, Emergence and Offspring Growth Plasticity in Cotton

Treatments

Seed boron (µg g−1 DW)

Seed zinc (µg g−1 DW)

Seed iron (µg g−1 DW)

Seed manganese (µg g−1 DW)

2014

2015

2014

2015

2014

2015

2014

2015

Density (D) (plants ha −1 )

53333

48.2 ± 1.1 A

41.5 ± 0.2 A

44.8 ± 0.56 A

44.7 ± 0.56 A

186.2 ± 2.35 A

170.7 ± 2.05 A

21.0 ± 0.30 A

21.4 ± 0.26 A

88888

38.6 ± 1.2 B

33.0 ± 0.2 B

42.4 ± 0.63 B

41.7 ± 0.53 B

178.8 ± 2.28 B

164.6 ± 2.12 B

19.2 ± 0.28 B

19.9 ± 0.31 B

Boron nutrition (B)

Control

36.7 ± 1.30 C

30.8 ± 0.99 C

41.3 ± 0.60 C

41.1 ± 0.67 C

169.6 ± 1.84 C

158.6 ± 2.34 C

21.2 ± 0.38 A

21.8 ± 0.30 C

600 mg/L

45.2 ± 1.52 B

38.8 ± 1.37 B

43.4 ± 0.55 B

43.4 ± 0.69 B

184.1 ± 1.74 B

168.1 ± 1.58 B

20.1 ± 0.31 B

20.7 ± 0.31 B

1200 mg/L

48.3 ± 1.44 A

42.0 ± 1.38 A

46.0 ± 0.75 A

45.2 ± 0.58 A

193.8 ± 1.81 A

176.3 ± 2.07 A

19.0 ± 0.38 C

19.4 ± 0.33 A

Mepiquat chloride (MC)

Control

39.5 ± 1.55 C

33.8 ± 1.26 C

41.4 ± 0.58 B

41.4 ± 0.67 B

178.9 ± 2.68 B

162.6 ± 2.43 B

20.7 ± 0.37 A

21.2 ± 0.39 A

Squaring

46.7 ± 1.86 A

39.8 ± 1.75 A

45.2 ± 0.71 A

44.8 ± 0.70 A

185.0 ± 2.91 A

170.6 ± 3.01 A

19.5 ± 0.40 B

20.2 ± 0.35 B

Flowering

44.1 ± 1.69 B

38.1 ± 1.70 B

44.2 ± 0.76 A

43.4 ± 0.69 A

183.6 ± 3.19 AB

169.8 ± 2.07 A

20.1 ± 0.43 AB

20.5 ± 0.40 AB

Source of variation (Pr > F)

D

<0.001

<0.001

<0.001

<0.001

<0.001

0.002

<0.001

<0.001

B

<0.001

<0.001

<0.001

<0.001

<0.001

<0.001

0.001

<0.001

MC

<0.001

<0.001

<0.001

<0.001

0.001

0.001

0.032

0.032

D × B

0.024

0.036

0.738

0.526

0.645

0.519

0.828

0.838

D × MC

0.128

0.034

0.999

0.967

0.764

0.653

0.746

0.744

B × MC

0.036

0.002

0.433

0.754

0.973

0.238

0.985

0.995

D × B × MC

0.649

0.134

0.530

0.835

0.874

0.940

0.952

0.841

  1. Values are mean ± SE of three replications. Means in a column followed by different letters are significantly different at P < 0.05. Interactions with P < 0.05 are italicized to indicate their significance.
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