PJB-2018-837
ANATOMICAL RESPONSE OF OLIVE (Olea europaea L.) TRANSPLANTS TO LIGHT INTENSITY AND SOME CHEMICAL SUBSTANCES
Haliz Arif Abdulrahman
Abstract
Abstract: This study was performed to investigate the effects of two different light intensity (100% and 50%) and some chemical substances [calcium (0.25%, 0.50%) and boron (50 and 100 mg.L-1)] on anatomical response of olive (Olea europaea L.) transplants of two cultivars (Xestawi and Suranni) in Duhok/Kurdistan region/ Iraq, 2016. The observed parameters were the thickness of lamina, the thickness of cuticle (upper and lower), epidermis (upper and lower), mesophyll layers (palisade and spongy). When the light intensity was 100%, the thickness of leaf lamina increased and subsequently thicknesses of cuticle, epidermis and mesophyll layers increased. Once the light intensity became 50%, the thickness of all anatomical parameters reduced. As for the effect of chemical substances on anatomical features, their impacts varied. Most of the anatomical parameters significantly increased when the transplants were treated with foliar spray of calcium (0.25% and 0.50%) except with upper cuticle thickness and palisade thickness which significantly decreased in (untreated and 50 mg.L-1boron) transplants respectively.
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