Abstract

This research was carried out in three season (2008 / 2009 , 2009 / 2010 and 2010
/ 2011) , in two locations ( Haditha and Tikrit) , with six barley varieties five of them
newly derived ( Showa , Towatha , Sammer , Al – Kair and Bowadi) , with variety
cultivated locally (Arevat) . In order to evaluate the response of these varieties across
sites and seasons and determining appropriate for each site . Been using (RCBD)
design with three replicates for all experiments
At matured stage the following traits were recorded: plant height , number of
spikes / m2 , number of grains / spike , 1000 grain weight and grains yield .
The results showed the following :
1- Varieties : The varieties Bowadi superior in number of spikes / m2 (267.7 spikes),
Sammer in 1000 grains weight (41.31 gm), while the varieties Sammer and Al – Kair
in number of grains / spike (48.91 and 46.83 grains respectively ), and the Sammer
and Al – Kair superior the others in grains yield was 4.21 and 4.05 ton . ha-1
respectively.
2- Sites : Tikrit site gave the highest rate of number of spikes / m2 (254.4 spikes ) ,
1000 grains weight (37.54 gm ) and grains yield (3.79 ton . ha-1)
3- Seasons : The season 2008 / 2009 superior in number of spikes / m2 (247.4 spikes ) ,
2009 / 2010 in number of grains / spike (42.87 grain) and 2010 / 2011 in 1000 grains
weight (37.63 gm ) and grains yield (3.78 ton . ha-1).
4- Interaction : The interaction between the factors of this study {( varieties × sites ) , (
varieties × seasons ) , (sites × seasons) and (varieties × sites × seasons) } was
significant for almost traits .