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Table 3 Internal oxygen concentration determination in different depths of cassava root

From: Genome-wide survey of the phosphofructokinase family in cassava and functional characterization in response to oxygen-deficient stress

Individual plant Diameter (cm) Air oxygen concentration(%) Oxygen concentration in region 1 (%) Oxygen concentration in region 2 (%) Oxygen concentration in region 3 (%)
Arg7–1 5.5 22.2 9a 5.28b 2.58c
Arg7–2 4.8 22.2 11.2 a 7.28 b 3.96 c
Arg7–3 5.9 22.2 10.42 a 8.35 b 3.96 c
SC124–1 6.4 22.2 6.95 a 5.46 b 3.7 c
SC124–2 6.6 22.2 7.86 a 6.31 b 5 c
SC124–3 9.3 22.2 8.66 a 6.27 b 5.2 c
  1. The middle segment of the tuber root was divided into three regions: region 1 refers to the periderm, which includes the sclerenchyma, parenchyma and phloem; region 2 refers to the storage parenchyma; and region 3 refers to the tuber centre, which includes xylem vessels and fibres. Values with different letters within one dividual are significantly different at p < 0.05