Vegetative propagation of laurocerasus officinalis l. using semi-hardwood cuttings
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Author: Valeria Ivanova
This research was conducted to study the effects of different doses of IBA, IAA and NAA on the rizogennata power of green cuttings from Laurocerasus officinalis L., under greenhouse conditions during the period 2013-2014. Laurocerasus officinalis L. is a species that has an economic importance for the pharmaceutical industry and is also often used in ornamental horticulture. Fixing the appropriate conditions for propagation by cuttings would have an effect on the cost of production. The cuttings were treated with 30, 40, 50 и 60 mg/l indole-3- butyric acid (IBA), 100, 150, 200 и 250 mg/l indolyl-acetic acid (IAA), and 20, 30, 40, и 50 mg/l naphthyl acetic acid (NAA). The results were reported after three months and were statistically processed by (ANOVA) and Duncan test. They following indicators were reported: percentage of rooted cuttings (%), number of roots per cutting and average root length (cm). The results showed that the percentage of rooted cuttings and the quality ofthe root system were dependent on the concentration of IBA, IAA, NAA. The largest number of rooted cuttings was obtained when using 40 mg/l IBA for most of the variants. The treatment with 200 mg/l IAA resulted in roots of the greatest length. The average length of the roots was increased by treatment with 30 mg/l and 40 mg/l NAA. High doses of IBA, IAA, NAAled to a weak, brittle root system which reduced the chances of successful adaptation in replanting.