بررسی تحمل به خشکی ژنوتیپ های پیشرفته گندم نان در آزمایش مقایسه عملکرد در اقلیم کشور ‭ARWYT-DROUGHT‬

In ordre to determine the adaptation and evaluation of terminal drought tolerance in 20 bread wheat lines/varieties in five experimental field stations: Zabol/ Ahwaz, Dezful,Darab and Iranshar for one cropping seasons (2004-05) were conducted in two experiments: I-Full Irrigation (FI), 2- Terminal drought stress (TDS), using randomized complete block design (RCBD), with three replications/ These lines/varieties selected from PRWYT- Drought (2003-04) in warm and dry region of country (ZONE II)/ Based on correlation between stability parameters ,statistics as total mean grain yield (from FI and TDS) yield index ratio (YIR), and Susbtibility Drought Index (Sm) were used in selection of superior lines/Selected lines had higher total mean grain yield, low SDR and YIR in sm and desired agronomic characteristic/ Lines no/ 3,8,10, and 11 with total mean grain yield (FI and TDS) of5017,490l,5037 and 4923, and percent YIR (TDS) 114,106,107 and 107 and sm 0/31,0/79,0/95 and 0/73 recpectivility/ Showed wide adaptation, toloreance to terminal drought stress, higher mean grain yield, lower SDR and greater YIR (TDS) and greatly yield stability in TDS condition and desired agronomic characteristic/ four lineas based on the above criteion were selected to be studied in the Elite Regional Uniform Yield trail drought stress (ERWYT_DRUOGHT /ZONE II) in southern warm and dry Zone in the 2005-06 cropping seasons.

Keywords:

گندم نان , گندم امیدبخش , ژنوتیپ , تنش خشکی , عملکرد دانه , اهواز , دزفول , ایرانشهر , زابل , داراب