The interaction with season collection of cuttings, Indol Butyric Acid (IBA) and juvenility factors on root induction in olea europaea L.( Cultivar “Kalinjot”)

Abstract

Differences in the root ability of olive cuttings in the juvenile and mature form are reported. The root ability of cuttings from juvenile and mature olive shoots together with the influence of season stem collection and different concentrations of IBA has been studied. Shoot proliferation and rooting of the olive explants were improved with editing to the nutrient media of 20 mg/l and 50 mg/l crude extract from olive ovule, respectively. Also, it is found that the extract of olive ovule has high content of IAA That means that shoots coming from the olive ovule located at the base of the tree have juvenility factors. Leafy stem cuttings of olive cultivar “Kalinjot” were obtained from 1-year-old olive shoots sampled on March 25 th , April 15 th , August 1 st and September 1 st during the 2013 growing season. The shoots were collected from the olive ovule located at the base of the tree (juvenile form) and on the crown of the tree (mature form) To improve the rooting of olive cuttings, different concentrations of IBA , (0,2000,4000,dhe 6000 ppm) After treatments, the stem cuttings, equipped with an automatic mist system, were planted in the greenhouse. 60 days after the beginning of rooting treatments, cuttings were scored for the presence of callus, percentage of rooted cuttings, root number per cutting and root length. In all the seasons and all the concentrations of IBA the juvenility modified significantly higher rooting of cuttings. The percentage of rooted cuttings sampled on April 15 th was markedly greater than that of rooted cuttings sampled on the other seasons. The concentration 4000 ppm of IBA was better.