The effect of naphtenic acids on white poplar (Populus alba L.) microcuttings' rooting | Efekat naftenskih kiselina na ožiljavanje mikroizbojaka bele topole (Populus alba L.)
2008
Kovačević, B., Institut za nizijsko šumarstvo i životnu sredinu, Novi Sad (Serbia) | Kevrešan, S., Poljoprivredni fakultet, Novi Sad (Serbia) | Ćirin-Novta, V., Prirodno-matematicki fakultet, Novi Sad (Serbia) | Kuhajda, K., Prirodno-matematicki fakultet, Novi Sad (Serbia) | Kandrač, J., Poljoprivredni fakultet, Novi Sad, (Serbia) | Miladinović, D., Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia)
Naphthenic acids, by-product in oil refinement, are well known soil pollutants and active substances in preparations for plant protection. The results of multiannual research indicated the possibility of their utilization for stimulation of cutting rooting. In order to examine their effect on white poplar genotype Populus alba cl. LBM, selected in Institute for Lowland Forestry and Environment, Novi Sad (Serbia), experiments in vitro were established. Two to three cm high microshoots were set for one hour on ACM medium with 4, 16 or 48 microM concentration of indol-3-butyric acid, 1-naphthalene acetic acid or Na-salts of naphtenic acids (for which the effect of 10 and 30 minutes treatment on medium with 48 microM was also examined), and then transferred on ACM medium without hormones. Analysis of covariance showed lack of the influence of number of microshoots in the jar. In spite poor rooting capacity of its hardwood cuttings, microshoots of genotype LMB showed high rooting potential in vitro. The differences among treatments were the most distinguishable for rooting percentage after two weeks of cultivation. One-hour treatment on the medium with 16 microM and 30 minutes treatment on medium with 48 microM of Na-naphthenates gave the best results. These results indicate the dynamics of root formation, suggesting faster root formation after treatments with Na-naphthenates, which could be interesting in rooting of green cuttings in nursery production. This work confirms earlier results on simulative effect of Na-naphthenates on rooting of cuttings of different tree species.
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