The influence of cuttings season and plant hormone on rooting of soft and woody cuttings of some ornamental plants
DOI:
https://doi.org/10.54172/mjsc.v30i1.129Keywords:
Centaurea, Leucanthemum, Lantana, Hibiscus, 1-naphthylacetic acidAbstract
This experiment was conducted on four ornamental plants. After nearly two weeks of planting, new foliar buds were observed on some cuttings of the four plants; Centuria, Margrita, Hibiscus and Lantana which showed the success of rooting. After 45 days of planting all cuttings has been removed from the planting media, and the roots formed were counted and root lengths were measured. Results showed that number of roots and lengths in Centuria was more without using hormone (NAA) than in the case of using recommended or half-concentration, where the number of roots in control exceeds the treatment of 50% of the concentration of the hormone by more than six-fold and full concentration of the hormone increased nine-fold. In case of roots length, control treatment exceeds 13 times for 50% treatment and 39 times for treatment of full concentration of the hormone. Margrita plant showed a clear response regarding the revitalization of rooting by the hormone, where treatments of 50% , 100% of hormone concentration outperformed control treatment (without hormone), it has doubled the number of roots in the treatment of 50% of the concentration of the hormone has more than tripled control treatment and up to 19 times in the treatment of 100% hormone more than control treatment, as it was also observed that the lengths of the roots reached in the case of half the concentration of the hormone treatment twice control treatment and about 13 times in the case of total concentration of the hormone. In case of Hibiscus and Lantana which woody cuttings were used, the number and lengths of the roots were very low compared with Centuria and Margrita in which they propagated by soft cuttings. Hibiscus cutting showed weak response to hormone concentrations and without significant differences with respect to root lengths, while control treatment does not appear any response. In the case of Lantana, hormone treatments were less than control (without hormone) in root length and without any significant differences between them.
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