Table 1 Callus formation from leaf segments of Piper hispidinervum under the effect of different combinations of growth regulators, α-naphtalenoacetic acid (NAA), and 6-benzylaminopurine (BAP), aiming at somatic embryogenesis, after 30 and 60 days of cultivation

From: Indirect somatic embryogenesis of Piper hispidinervum L. and evaluation of the regenerated plants by flow cytometry

	Cultivation time
NAA + BAP (mg L⁻¹)	30 days	60 days
0.0 + 0.0	0.0 cA*	0.0 cA
5.0 + 0.0	0.0 cA	0.0 cA
10.0 + 0.0	0.0 cA	0.0 cA
0.0 + 2.5	4.0 bA	32.0 aB
5.0 + 2.5	12.0 aA	32.0 aB
10.0 + 2.5	12.0 aA	12.0 bA
Average	5.0 A	20.6 B

*Means followed by the same letter (uppercase for horizontal comparison and lowercase for vertical comparison) do not differ statistically by the Scott-Knott test at 5% significance

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