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Table 1 Effects of K supply on morphological and physiological traits of leaves and siliques

From: The photosynthetic and structural differences between leaves and siliques of Brassica napus exposed to potassium deficiency

Organs

Treatment

Biomass (g)

Area (cm2)

M A (g m−2)

Thickness (μm)

Density (g cm−3)

Chl (g m−2)

K concentration (%)

Leaf

-K

2.48 ± 0.17b

336.8 ± 28.2b

73.9 ± 1.8a

313.9 ± 4.3b

0.235 ± 0.006a

0.42 ± 0.06b

0.89 ± 0.06b

+K

3.02 ± 0.07a

401.9 ± 14.7a

77.1 ± 2.3a

327.6 ± 2.8a

0.235 ± 0.007a

0.64 ± 0.06a

2.12 ± 0.05a

Silique

-K

0.11 ± 0.00b*

6.6 ± 0.1b*

73.1 ± 3.8b

304.8 ± 5.2b*

0.240 ± 0.012a

0.20 ± 0.01b*

2.05 ± 0.06b*

+K

0.13 ± 0.01a*

7.4 ± 0.2a*

85.9 ± 2.0a*

333.6 ± 4.8a

0.257 ± 0.006a*

0.32 ± 0.02a*

3.27 ± 0.03a*

  1. M A, leaf (silique) mass per area; Chl, chlorophyll content. Data represent mean ± standard error (SE) of four replicates for biomass, area, M A, density, Chl and K concentration, and at least 16 replicates for leaf thickness
  2. Different letters indicate statistically significant differences (P < 0.05) between the -K and +K treatments
  3. *Indicates statistically significant differences (P < 0.05) between the two organs under the same treatment conditions