IJHAF | Effect of the exposure period to different water salt levels on the morphological behavior of olive plants

Indexing and Abstracting

Effect of the exposure period to different water salt levels on the morphological behavior of olive plants

Zouhour Hamza , Sofiene B.M. Hammami , Narjes Baazaoui , Sonia Labidi , Karim Aounallah , Asma Maazoun , Rim Khefacha , Besma Sghaier-Hammami

International Journal of Horticulture, Agriculture and Food science(IJHAF), Vol-6,Issue-5, September - October 2022, Pages 13-17, 10.22161/ijhaf.6.5.3

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Article Info: Received: 06 Aug 2022; Received in revised form: 03 Sep 2022; Accepted: 11 Sep 2022; Available online: 14 Oct 2022

Abstract:

The increasing salinity of water and soil is one of the environmental factors that most threatens the sustainability of olive cultivation systems in the Mediterranean basin. The identification of plant material with high tolerance to this stress would be one of the ways to solve this challenge, but it is generally a slow and expensive process. The selection of the most reliably parameters involved in the response of the plant to salinity and that are easy to evaluate, could help to speed up the identification of the most tolerant genotypes. The objective of this study is to determine the most interesting morphological characters which could be used in future as early criteria in the selection process of olive tolerant genotypes. For that, young plants, three-month-old, were exposed to salinity (0, 4 and 8 g/L NaCl) during different periods of time (30, 50 and 70 days), and several morphological parameters were assessed. The obtained results showed that most of the parameters were affected by the concentration 8 g/L of NaCl after a treatment period of 50 days. The most affected parameters by this level of salinity were the plant height, the leaf number and the number of lateral shoots. The PCA analysis showed that the number of lateral shoots was poorly correlated with the other parameters, but the height and the leaf number were highly correlated with each other.

Keywords:

Salt stress, Olea europaea, early selection, salt tolerance, olive growth parameters.

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