أداء و توريث بعض الصفات لأصناف من الشعير المدخلة

الملخص EN

To evaluate the productivity performance of some introduced Australian barley (Hordeum vulgare L.) genotypes for the mid- region of Iraq.

Field experiments were conducted at the Grain Crops Experimental Station / Ministry of Sciences and Technology at Toweatha District.

Ten genotypes (C/50, C/63, D/21, D/24, D30, CA2-38, CB2-38, B3-38, A2-40 and B3-40) with the control cultivar Arivat were evaluated for two seasons (2009-2010, and 2010-2011).

The experimental design was a RCBD with three replicates.

The characters studied were plant height, number of spikes / plant, number of seeds per spike, seed weights (weight of 1000 grain), grain yield/plant, and grain yield kg.

ha-1.

The results showed that some genotypes showed superiority in some characters, the genotype B3-38 gave higher plant height (109, and 112 cm) for both years respectively, while the genotype B3-40 gave higher number of spike/plant (10.1 and 9.2) , and higher number of seeds/plants (380,and 367 seeds/ plant)for both years respectively.

The genotype C/63 significantly produced more seed weights per plant (14.4 gm) in 2009-2010, and genotype D/30 produce 13.52 gm/plant in 2009.

The genotype D/30 was significantly higher than other genotypes in the weight of 1000 seed for both years.

For seeds yield, the genotype C/63 gave higher grain yield of 3800 kg ha-1in 2009-2010, and genotype D/30 (2920 kg.

ha -1) in 2010-2011.

The results indicate that most of the introduced genotypes were better than local variety in most of the characters studied.

Thus, This suggest that use of these genotypes in multi-location trials for identification of the wide and narrow adapted genotypes then we have to prove their yield productivity and their tolerance for the new environments and the resistance to the pathogenesis .

the higher broad sense heritability were 0.97 and0.98 for number grain per plant and weight thousand respectively these parameters used for improving introduced cultivars, because of higher genetic variance and lower environment variance .