Table 1.

Influence of NPA treatment (50 μM) on subsequent rooting of P. hybrida determined at day 14 post excision

	Percentage of rooted cuttings (%)	No. of roots per rooted cutting	Length per root (cm)	Total root length per planted cutting (cm)
Control	95.8 ± 4.2	53.2 ± 3.3	1.4 ± 0.06	47.7 ± 7.8
NPA	20.8 ± 4.2*	8.0 ± 2.9*	0.6 ± 0.04*	1.0 ± 0.4*

Mean values ± SE of four replications (each consisting of six cuttings)

* Significant effect of NPA application (p ≤ 0.05, t test or Mann–Whitney U test in case of total root length)