بررسی خصوصیات زراعی و عملکرد دانه ژنوتیپ های گندم نان در آزمایشات مقایسه عملکرد مناطق دیم گرمسیر و نیمه گرمسیر

In order to identify high yielding, stress tolerant and adaptable varieties of bread wheat genotypes for warm and semi-warm dryland areas of country this study was onducted on 910 genotypes of bread wheat through preliminary and advanced bread wheat yield trials including A and B-tests at 2003-2004 wheat growing season in Gachsaran, Kohdasht, Moghan and Gorgan Agricultural Dryland Research tations.The PWYT performed observational and without replication but A and B trials conducted through RCB design with 3 and 4 replications consequently. During the growing season datas were recorded from some agronomical and morpho- physiological traits such as early vigour, PLH, DHE, DMA, grain yield and its components and reaction to YR and LR. In PWYT,new genotypes were compared with check varieties Zagros and Kohdasht through a bar diagram but in other trials simple analysis of variance was performed on grain yield and mean comparisons was done through LSD method. Selection was done on PWYT based on grain yield and field appearance. Some genotypes which outyielded from Zagros variety and possesed good agronomical traits were selected . In advansed yield trials only a few genotypes outyielded significantly comparing with check variety Zagros. These results again lead us to develope our gentic materials resourses and improve our local crossing programs.

Keywords:

گندم نان , مقایسه عملکرد , عملکرد دانه , گرمسیری , نیمه گرمسیری , دیم , گچساران , کوهدشت (لرستان) , مغان , گرگان , مغان , گرگان , گندم زاگرس , ژرم پلاسم , زنگ زرد , علف های هرز پهن برگ , علف های هرز نازک برگ , صفات مورفوفیزیولوژیکی