EFFECTS OF PRETREATMENTS ON THE GERMINATION OF PISTACIO  OF ATLAS Pistacia atlantica DESF.

OUKARA Fatma Zohra; SALEM Kenza; CHAOUCH Fatma Zohra; BENREBIHA Fatma Zohra; CHAOUIA Cherifa

OUKARA Fatma Zohra Université Saad Dahlab, Laboratoire de Biotechnologie en Productions Végétales 09000 Blida, Algérie
SALEM Kenza Université Saad Dahlab, Laboratoire de Biotechnologie en Productions Végétales 09000 Blida, Algérie
CHAOUCH Fatma Zohra Université Saad Dahlab, Laboratoire de Biotechnologie en Productions Végétales 09000 Blida, Algérie
BENREBIHA Fatma Zohra Université Saad Dahlab, Laboratoire de Biotechnologie en Productions Végétales 09000 Blida, Algérie
CHAOUIA Cherifa Université Saad Dahlab, Laboratoire de Biotechnologie en Productions Végétales 09000 Blida, Algérie

Keywords: Germination, Pistacia atlantica, tegumentary inhibition, scarification, stratification

Abstract

Seeds of Atlas pistachio (Pistacia atlantica Desf.) are generally characterized by a dormancy especially integumentary inhibition. In this context and to optimize Pistacia atlantica seed germination and to overcome and remove the obstacle of tegumentary inhibition, we have tested the effect of various physical and chemical pretreatments. The obtained results showed various pretreatment tested allowed to improve the rate of seeding, to accelerate the speed of seeding and to reduce the average time of seeding. The biggest rate of seeding (100 %) is registered at the seeds which underwent a stratification in 4±1°C during 30 days combined in a mechanical scarification. Also, the treatment of seeds in the sulphuric acid concentrated during one hour and the mechanical scarification allowed of registered(recorded) the high rates of seeding or respectively 93 %, 97 %. However, the stratification of seeds in colds in 4±1°C in various periods showed average rates of seeding (74 %).