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Table 1 Effects of nitrogen regimes on the leaf morphology, anatomy and biomass in a shade-tolerant plant Panax notoginseng

From: Photosynthetic performance and photosynthesis-related gene expression coordinated in a shade-tolerant species Panax notoginseng under nitrogen regimes

Variables

 

Nitrogen level

 

LN

MN

HN

Upper epidermis (μm)

11.209 ± 0.024 c

17.694 ± 1.927 a

14.738 ± 0.269 b

Lower epidermis (μm)

10.590 ± 1.027 c

13.177 ± 2.186 a

11.420 ± 0.918 b

Spongy tissue (μm)

42.551 ± 2.194 c

70.378 ± 0.182 a

56.518 ± 0.189 b

Palisade tissue (μm)

17.069 ± 1.283 c

32.867 ± 0.173 a

24.490 ± 1.825 b

Palisade/spongy

0.401 ± 0.002

0.467 ± 0.016

0.433 ± 0.016

Leaf length (cm)

6.484 ± 1.980 c

7.515 ± 1.068 a

6.795 ± 1.238 b

Max width (cm)

2.777 ± 0.698 c

3.114 ± 0.621 ab

3.273 ± 0.519 a

Leaf length/max width

2.341 ± 1.339

2.413 ± 0.8445

2.076 ± 0.879

Leaf dry weight (g plant− 1)

0.413 ± 0.040 c

0.545 ± 0.025 a

0.496 ± 0.064 b

Total dry weight (g plant− 1)

1.068 ± 0.294 c

1.649 ± 0.181 a

1.524 ± 0.088 b

  1. Values are means ± SD. (n = 7). Different letters among nitrogen regimes indicate significant difference (P ≤ 0.05)