Yield Performance and Stability of the New Durum Wheat Cultivar (Bani Sewef 7) = القدره المحصولية والثبات الوراثي لصنف قمح المكرونة الجديد (بني سويف 7)

The newly released durum wheat cultivar Bani Suef 8 was selected from the advanced lines among CTMMYT collections grown in Shandaweel Agricultural Research Station, Wheat Research Department, Field Crops Research Institute, Agricultural Research Center, Egypt, during 2014-2015 and 2015-2016 growing seasons. Then, it was evaluated in 24 yield trials (one screening yield trial, seven preliminary yield trials, sixteen advanced yield trials) started in 2016/2017 through 2018/2019 growing seasons. These yield trials were conducted in Middle and Upper Egypt either in old or new lands. Results proved the superiority and grain yield stability of the new durum wheat cultivar Bani Suef 8, since it out yielded the commercial durum wheat cultivars Bani Suef l, Bani Suef 5, Bani Suef 7, Sohag 4 and Sohag 5. Also, the new cultivar Bani Suef 8 possesses good resistance degrees against wheat yellow, leaf and stem rusts and powdery mildew, and stable grain yield under different agro-climatic zones of Egypt. The new cultivar is recommended to be cultivated in Middle and Upper Egypt. to its good performance and having high grain yield ability under old land in and Upper The new cultivar have good genetic resistance to the three rusts. The new cultivar, to yellow and stem rusts and was, at least, moderately resistant to leaf rust. which is considered a desirable character against rusts diseases. These results indicate the success of the policy of the Wheat Research Department in selecting varieties with high yield, resistance to rust diseases and high yield stability under various agricultural environments.