Case studies tagged with Variability

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The Value Chain of Aleppo Pine Seeds and the Value Added of Vegetable Oil Extracted from Seeds

Aleppo pine seeds & Vegetable oil extracted from Aleppo pine seeds

Aleppo pine seeds (commonly called Zgougou) derive all their originality and nobility from the fact that they are consumed by Tunisians as part of their cooking habits. Zgougou is considered one of the most interesting NWFP due to socio-economic role and commercial value.  Aleppo pine seed oil can be extracted as for nutrition, or for medicinal and cosmetic uses.

The present work studies the conditions of exploitation of seeds in the forest, the yield of vegetable oil extracted, its physicochemical qualities and the possibilities of valorizing the press cake obtained after...


Is the plasticity in response to the drought of Quercus suber linked to the geographical origin?

Seedlings of provenances of Cork Oak

The selection of forest species and the study of their behavior variability relative to the main environmental conditions change remains a major challenge. The aim of this study was to investigate the intraspecific variability responses of Quercus suber L. to drought conditions in order to determine the future sustainability of cork oak forest in Tunisia.


Intraspecific variability and genetic selection of Aleppo pine

Aleppo pine provenance trial in the comparative plantation of Jbel Abderrahmane - Cap Bon

Aleppo pine is one of the dominant forest species in Tunisia, favoured by its great regeneration capacity, plasticity, climatic stress tolerance, and multiple products: wood, edible seeds, vegetable seed oil, essential oils from leaves. For these reasons it has been used massively as for reforestation.

But  the wide geographical distribution of the species might imply variation in adaptive and productive traits. The use of genetic material well adapted to the environment and better performing allows for valorization of the resource and offers a guarantee of success for new...


Essential oils of Eucalyptus: Comparative performance and promotion of their use

1. Leaves and flowers of Eucalyptus lehmannii – Arboretum of Korbous / 2.Leaves and flowers of Eucalyptus gillii – Arboretum of HajebLayoun / 3.  Leaves and flowers of Eucalyptus leucoxylon – Arboretum of Korbous

The current exploitation of rosemary and myrtle (native species with relatively high yield of EO) occupies an important place in the forestry sector and a significant socio-economic interest. Eucalyptus trees can play a predominant and substantial role thanks to their richness in essential oils, their composition and their commercial value.

This objective necessarily involves the identification of eucalyptus EO species and the selection of the most efficient in terms of the yield of essential oils and the presence of the most dominant active compounds which are preferentially sought...