Etude de la contribution des paramètres phéno-morphologiques dans la sélection du blé dur (triticum durum desf.)‎ dans le climat semi-aride

الملخص EN

The objective was to investigate of the contribution of some phenological and morphological traits such as the duration of the vegetative phase, above ground biomass accumulated at headiny and plant height to the adaptation of twenty varieties of durum wheat (Triticum durum Desf.) under semi-arid conditions The present investigation was conducted during the 2002/2003 year on the ITGC experimental of Setif and the ITCMI experimental of Oum El Bouaghi..

Plant material was grown in a randomized complete blocs design.

Measured traits were crop dry matter accumulated at headiny, duration of vegetative period, grain yield and yield components, water use efficiency to produce above ground biomass and grain yield, crop growth rate.

Results showed that high yield was due to the contribution of high grain number /m2.

Grain number/m2 and plant height contributed at headiny.

Biomass and harvest index showed significant direct effects on grain yield formation.

The morpho- phenological parameters can by their close relationship with the yield to be good indicators for a more relevant selection of varieties adapted to semi arid conditions of Algeria.