Table 1 Effect of citric acid (CA) and malic acid (MA) spray treatments on rooting of herbaceous cuttings in ‘Sherbet’ roses
Treatment | Rooting percentage (%) | Root count | Mean root length (mm) | Longest root length (mm) | Shoot length (mm) | Shoot dry weight (g) | Root dry weight (g) | Root/shoot ratio (DW) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DW | 94.6 (± 4.62) | b | 4.6 (± .6) | b | 25.2 (± 1.6) | b | 39.2 (± 6.6) | c | 54.9 (± 5.1) | bc | .090 (± .016) | c | .012 (± .002) | b | .14 (± .01) | ab |
CA 3 mM | 97 (± 5.2) | ab | 7.1 (± .4) | a | 33.1 (± 3) | a | 51.9 (± 7.5) | a | 77 (± 5.5) | a | .138 (± .022) | ab | .018 (± .002) | ab | .13 (± .03) | ab |
CA 6 mM | 100 (± 0) | a | 7.7 (± .8) | a | 34.5 (± 1.4) | a | 51.1 (± 3) | a | 79.8 (± 5.2) | a | .148 (± .033) | a | .017 (± .002) | ab | .12 (± .02) | ab |
CA 9 mM | 100 (± 0) | a | 6.5 (± .6) | ab | 35.2 (± 4.6) | a | 48.7 (± 3.2) | ab | 73.7 (± 2.8) | a | .124 (± .003) | abc | .023 (± .007) | a | .19 (± .06) | a |
MA 3 mM | 100 (0) | a | 6.1 (± 1.9) | ab | 29.7 (± 5.5) | ab | 41.1 (± 7.5) | bc | 63 (± 6.7) | ab | .113 (± .014) | bc | .017 (± .006) | ab | .15 (± .07) | ab |
MA 6 mM | 100 (0) | a | 6.7 (± 1.3) | ab | 29.4 (± .5) | ab | 47 (± .1) | bc | 39.1 (± 3.7) | cd | .151 (± .011) | a | .015 (± .005) | ab | .10 (± .03) | b |
MA 9 mM | 100 (0) | a | 6.0 (± 1.6) | ab | 34.3 (± 1.49) | a | 49.3 (± 1.6) | ab | 34 (± 23) | d | .096 (± .012) | c | .017 (± .003) | ab | .18 (± .03) | ab |