Alanine conjugate of indole-3-butyric acid improves rooting of highbush blueberries
2012
Mihaljevic, S., Rudjer Boskovic Inst., Zagreb (Croatia) | Salopek-Sondi, B., Rudjer Boskovic Inst., Zagreb (Croatia)
In attempt to improve rooting procedure for Vaccinium corymbosum, we investigated alanine conjugate of indole-3-butyric acid (IBA-Ala) as potential root-promoting compound and compared it with commonly used auxins, indole-3-butyric acid (IBA) and indole-3-acetic acid (IAA). The effect of different concentrations of auxins on the rooting of highbush blueberry stem cuttings (var. Bluecrop, Bluetta, Burlington and Jersey) and in vitro-derived microcuttings (var. Jersey) was investigated. Auxin treatments significantly promoted rooting of all four varieties. The most efficient rooting promoter in all varieties appeared IBA-Ala (provided up to 83%, and 93% of the rooted cuttings and microcuttings, respectively). Furthermore, IBA-Ala caused a vigorous, well-branched root system that resulted in better acclimatization and survival of plants.
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