Production and rooting of etiolated cuttings of West Indian and hybrid avocado



How to Cite

Production and rooting of etiolated cuttings of West Indian and hybrid avocado. (1984). Tropical Agriculture, 61(3).


Etiolated cuttings of avocado cvs. 'Pollock' (West Indian) and 'Lula· (Guatemalan X West Indian hybrid) were produced and successfully rooted. Hardwood and semi-hardwood stem cuttings (18cm long, 1.5 cm diameter) of 'Pollock' and 'Lula' avocado produced new shoots with etiolated bases from lateral buds when placed San under a vermiculite/perlite medium in a closed humidified propagating bin. These new shoots (12-16cm long, with 4-6 leaves and with an etiolated stem base 4-6cm long) were severed from the original cuttings and subsequently rooted. To increase the number of new shoots (etiolated cuttings) the original stem cuttings were treated with gibberellic acid (GA3). 6-benzylamino purine (BA) and their mixtures at 50 and 100 ppm. GA3 at 100ppm produced etiolated shoots in 93% of the original stem cuttings; and treatment with BA at 50 ppm induced multiple shoot development from single buds. In 'Pollock' and 'Lula' etiolated cuttings the percentages of rooting were 50 and 66, respectively; non-etiolated cuttings failed to root under mist. Application of indolebutyric acid (IBA) at 3000ppm improved the rooting of etiolated cuttings in the two cultivars by 16-17%, i.e. the percentage of rooting in 'Pollock' and 'Lula' increased to 66 and 83, respectively. The results of investigation provide a technique for propagating West Indian ('Pollock') and hybrid ('Lula' avocado by cuttings.