Effect of hormone type (K-IBA or NAA) and concentration on the mean number of roots, root length, and plant height at harvest (8 wk after striking).
| Treatment | Mature cuttings | ||
|---|---|---|---|
| Mean number of roots | Mean root length | Mean plant height | |
| Control | 9.19±1.32 ab | 9.43±0.82 a | 3.71±0.37 c |
| K-IBA-1000 ppm | 7.5±1.35 ab | 8.5±0.89 a | 6.2±0.41 ab |
| K-IBA-3000 ppm | 11.94±1.35 a | 8.34±0.91 a | 7.94±0.42 a |
| K-IBA-5000 ppm | 11.1±1.35 ab | 7.79±0.86 a | 3.46±0.39 c |
| K-IBA-8000 ppm | 9.52±1.35 ab | 8.15±0.86 a | 4.4±0.39 bc |
| K-IBA-50 ppm | — | — | — |
| NAA-500 ppm | 5.75±1.35 b | 8.18±0.84 a | 4.74±0.38 bc |
| NAA-1000 ppm | 8.52±1.35 ab | 5.75±0.91 a | .28±0.42 c |
| NAA-1500 ppm | 9.87±1.35 ab | 6.5±0.94 a | 4.11±0.43 c |
| NAA-2000 ppm | 10.35±1.35 ab | 8.11±0.84 a | 4.23±0.38 c |
| Significancea | 0.0212 | 0.05 | < 0.001 |
Notes: Results depicted apply only to propagules collected from mature (2-y-old) stock plants collected and struck 6 wk after breaking dormancy yet prior to floral initiation. All values are reported in cm: 1 cm = 0.4 in. Standard error of the means are reported in addition to means. K-IBA = indole-3-butyric acid; NAA = 1-naphthaleneacetic acid.
↵a Significance of treatment effects (P > F; ns = not significant at the 0.05 level). Means in same treatment group (columns) not sharing a letter are significantly different at P < 0.05 level based on adjusted P values using Tukey HSD and a standard one-way ANOVA.