Effects of plant extracts and auxins on sprouting and rooting of stem cuttings of Spondiathus preussii Engl Var

Abstract

The study assesses the influence of Growth Regulators on Stem Cuttings of Spondiathus Preussii. Synthetic auxin and plant extracts at 150mgL-1, 250mgL-1, and 500mgL-1and 30%, 50%, and 70% were evaluated with a view to promoting its conservation. Cuttings of three physiological ages (apical, middle and basal) were set in two growth medium (Sharp River sand
and well decomposed sawdust). Cuttings were assigned to Indole Butyric Acid, Naphthalene Acetic Acid, Coconut milk extracts, Pawpaw seeds extract and Bryophyllum pinnatum Leaf Extract. Percentage Sprouting, shoot numbers, leaf number, were monitored for 8 weeks, rooting parameters of cuttings and callus formation were also recorded. Data were analyzed using
ANOVA at (α 0.05). PSE 70% gave the highest sprout (11.26), followed by NAA 500mgL-1 having the least (0.00). PSE 70% had highest shoot and leaf numbers (15.7) and (62.71). IBA 250mgL-1 had the highest rooted stem cuttings and number of (0.22 and (0.33). Similarly, PSE 30% had the highest callus formations (1.89). The results of this study shows that stem cuttings
and plant extracts has significant implication and is a potential, viable and economical method of improving sprouting of S. preussii.