Yahya Molaaldoila

 Physiology of tobacco and Soil Analysis for one year 1986 in Cuba.
 Plant physiology (Growth and Development of Plant) for three months in the Indian agriculture research Institute (1991), New Delhi, India.
 Breeding Methodology in Food and Feed legume at ICARDA- Aleppo- Syria.1993.
 International workshop in groundnut (1991) for one week in ICRISAT-India.
 International workshop in the agriculture research review held on September 1996 at Dhamar, Republic of Yemen.
 International training course on CO2 enrichment research and technology in the Indian agriculture research Institute (1999), New Delhi, India.
 Workshop in utilization of genetical mutation in improving agricultural production (13-17 December 2003, Sana'a arranged by the national atomic energy commission).
 A regional short-term training course in utilization of expert systems in agricultural research and production (17-28 September, 2005) Workshop maternal, Cairo, Egypt.
 Regional training course on the application of technology packages to breeding based on mutation induction and efficiency enhancing biotechnologies.7-11 April-2008 (IAEA). Vienna.