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

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

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	9^a	5.28^b	2.58^c
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

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

ISSN: 1471-2229