Evaluation of Promising durum Wheat lines under on farm condition in Golestan Province.

In order to transfer new technology and research findings to the farmers, fields and to evaluate advanced and promising lines of durum wheat under on farm condition, four lines including the checks (Aria)and(Dna) as well as bread wheat (Milan/sha7) were evaluated in three regions of the Golestan province in 2008-2009. The experiment was laid out in an R.C.B.D with three replications and seven treatments, the plot size was 25 m-2, and seed rate was 450 per square meter. Rows were 20 centimeters apart. Lines studied in previous experiments at agricultural research station of Gonbad and in other temperate regions of the country, out yielded the checks. The study was carried out to compare their yield and other traits with check under on-farm condition. Note taking of the important characters were done during the season, simple and combined analysis of variance were performed. Result of yield trial of promising durum wheat lines in Gonbad (Haji Ghoshan) showed significant differences among lines. Lines 2 and 1 (KUCUK (DM-82-2) and SKEST //HUI/TUB/3/SILVER (DM-82-4), respectively) produced higher yield (3438 and 3883) than that of the check (Aria). There were significant differences among lines in Kalaleh at 0.01 probability level. Treatments 4 and 1 produced 4804 and 4029 Kg/ha out yielding check at 0.01 probability level. Treatments 3, a bread wheat, produced 6054 Kg/ha grain yield whereas treatments 1 and 4(DM-82-2) KUCUK respectively, had 4380 Kg/ha grain yield. The check produced 5471 Kg/ha. The combined analyzes of variance of promising lines of durum wheat in the three locations showed that the effect of location on yield was significant. The higher yield in Agh Ghala might be attributed to favorable environmental condition and to lesser head fusarium. The significant genotype x location interaction showed that genotypes responded differently to environments. The highest grain yield was obtained by treatment (Milan/sha7) with 5484 and treatment 1 KUCUK (DM-82-2) and E 90040/ MFOWL_13//LOTALL_6 (DM_85/5) ranked next producing 4380 and 4283 kg/ha, respectively.The check (Aria) produced 3823 kg/ha .Based on suitable agronomical traits and in order to avoid biotic and a biotic stresses, genetic variability is of great importance, such that if this condition occurs, farmers, crop will not fail. There fore genotypes KUCUK (DM_82_2) and (E90040/MFOWL_13//LOTAIL_6 (DM_85_5)) as well as Aria might be recommended for the target regions as a sustain abler crop production system.