Occurrence and Cytological Mechanism of 2n Pollen Formation in a Tetraploid Accession of Ipomoea batatas (Sweet Potato)
We evaluated a 4x accession of Ipomoea batatas (L.) Lam. and four 2x accessions of Ipomoea triloba for 2n pollen production. Approximately 90% of the genotypes of accession 81.2 (I. batatas, 4x) produced 2n pollen with different frequencies. In...
إيكاردا وسورية : خمسة وعشرون عاماً من التعاون والعطاء
استضافت حكومة الجمهورية العربية السورية المركز الدولي للبحوث الزراعية في المناطق الجافة والمعروف اختصاراً باسم إيكاردا منذ عام 1977 ليقوم بإجراء أبحاثه الهادفة لإيجاد أصناف جديدة وأساليب حديثة لإدارة الموارد الطبيعية ولتخرج نتائج هذه الأبحاث من...
Opuntias are multipurpose plants that are increasingly being used in agricultural systems in arid and semi-arid areas and are considered a key component for the productivity and sustainability of these regions. This publication presents current...
Comparison of European with West Asian and North African winter barleys in tolerance to boron toxicity
Three plastic-house experiments were conducted to compare the tolerance of European with West Asian and North African (WANA) winter barleys to boron (B) toxicity. Experiment I screened 24 winter barley entries with diverse origins. Experiment...
Efficiency of spatial methods in yield trials in lentil (Lens culinaris ssp. culinaris)
Incomplete block (IB) analysis of lentil yield trials in lattice block designs substantially reduced experimental error variability compared to randomized complete block (RCB) analysis. Spatial variability, which may exist in two dimensions in...
Caravan 15: Special Issue on ICARDA's work in Africa
ICARDA serves its African stakeholders through two of its seven regional programs. These are the Nile Valley and Red Sea Regional Program (NVRSRP), which covers Egypt, Ethiopia, Eritrea, and Sudan; and the North Africa Regional Program (NARP)...
Links between ICARDA and Spain are long established. A glance at any map of the Mediterranean will help explain why both have benefited from this collaboration. Spain is an active member of the European Union but it is also separated...
First record of Beet western yellows virus, Chickpea chlorotic dwarf virus and Faba bean necrotic yellows virus affecting faba bean (Vicia faba) crops in Iraq
A survey to identify virus diseases affecting faba bean (Vicia faba) in Iraq was conducted during April 2000. Around 4400 samples were collected from 36 faba bean fields distributed in five governorates (ten in Baghdad, nine in Al‐Anbar, three...
First record of Barley yellow dwarf virus and Cereal yellow dwarf virus in Tunisia
A survey for Barley yellow dwarf (BYDV) and Cereal yellow dwarf viruses (CYDV) was carried out during April 2001 covering seven major cereal-growing regions (Beja, Bizerte, Cap-Bon, Jendouba, Le Kef, Siliana and Zaghouan) of Tunisia. A total of...
يعد هذا التقرير السنوي الذي تنشره إيكاردا لعام 2000 الأول من نوعه الذي يعكس البنية الجديدة لكتابة التقارير والتي تعتمد على المواضيع الخمسة للمجموعة الاستشارية للبحوث الزراعية الدولية CGIAR ألا وهي: تعزيز الأصول الوراثية، إدارة نظم الإنتاج، إدارة...
