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Table 3 Correlation coefficients among 2-AP, GABA, total nitrogen, and proline content in grains

From: Shading during the grain filling period increases 2-acetyl-1-pyrroline content in fragrant rice

Index 2-AP content Grain GABA content Proline content Total nitrogen content
Yuxiangyouzhan     
2-AP content 1 0.8326** 0.5460 −0.5557
GABA content 0.8326** 1 0.6926 −0.3402
Proline content 0.5460 0.6926 1 −0.2272
Total nitrogen content −0.5557 −0.3402 −0.2272 1
Nongxiang 18     
2-AP content 1 0.5442 0.5356 −0.1758
GABA content 0.5442 1 0.3565 0.3836
Proline content 0.5356 0.3565 1 0.3267
Total nitrogen content −0.1758 0.3836 0.3267 1
  1. Significant correlations at **p < 0.01.