Somatic embryogenesis and plant regeneration of cassava (Manihot esculenta Crantz) landraces from Cameroon

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Table 3 Effect of auxins on secondary and cyclic somatic embryogenesis of five cassava cultivars from Cameroon

Varieties	Auxin (50 µM)	Frequency (%) of SE induction	Average number of SE per explant	Average days to complete the process
Sekelen	Pic	100.00 ± 0.00 a	56.25 ± 8.01 c	25.00 ± 2.22 a
	NAA	60.00 ± 0.00 d	22.00 ± 4.72 fg	11.00 ± 1.1 b
	2,4-D	73.33 ± 6.67 bc	55.67 ± 5.90 c	27.00 ± 3.5 a
Ngan Mbada	Pic	96.67 ± 3.33 a	37.20 ± 1.17 e	26.00 ± 3.7 a
	NAA	57.33 ± 1.33 d	11.33 ± 0.33 h	12.00 ± 1.5 b
	2,4-D	66.67 ± 6.67 cd	26.33 ± 2.60 f	24.00 ± 1.6 a
Ekona White	Pic	100.00 ± 0.00 a	92.33 ± 7.88 a	23.00 ± 2.3 a
	NAA	84.00 ± 2.08 ab	14.67 ± 2.72 gh	11.00 ± 1.6 b
	2,4-D	84.00 ± 2.08 ab	71.00 ± 11.23 b	22.00 ± 1.8 a
Local Red	Pic	100.00 ± 0.00 a	56.00 ± 4.93 c	28.00 ± 1.8 a
	NAA	100.00 ± 0.00 a	15.58 ± 1.52 g	12.00 ± 2.4 b
	2,4-D	100.00 ± 0.00 a	49.33 ± 8.11 cd	29.00 ± 0.8 a
Ekona Red	Pic	100.00 ± 0.00 a	44.00 ± 5.29 de	22.00 ± 4.2 a
	NAA	58.00 ± 2.00 d	11.00 ± 2.51 h	10.00 ± 0.6 b
	2,4-D	100.00 ± 0.00 a	46.67 ± 6.33 de	23.00 ± 4.5 a

Within the same column, mean values followed by the same letter are not significantly different at α = 5 % (Newman–Keuls test)
±, standard deviation; SE, somatic embryogenesis