Research objectives: Studies on agronomic traits associated with drought tolerant ability of some materials were carried out for selection of inbred lines and development of promising maize hybrids for production. | Summary of agricultural dissertation: Agronomic traits associated with drought tolerance of tropical-derived germplasm for hybrid maize breeding MINISTRY OF EDUCATION AND TRAININ MINISTRY OF AGRICULTURE AND RURAL DEVELOPMENT VIETNAM ACADEMY OF AGRICULTURAL SCIENCES --------------------------------- DO VAN DUNG AGRONOMIC TRAITS ASSOCIATED WITH DROUGHT TOLERANCE OF TROPICAL-DERIVED GERMPLASM FOR HYBRID MAIZE BREEDING Specialized: Genetics and Plant Breeding Code: SUMMARY OF AGRICULTURAL DISSERTATION HANOI - 2018 The work was completed in: VIETNAM ACADEMY OF AGRICULTURAL SCIENCES Science advisor: 1. . Le Quy Kha, Institute Of Agricultural Science for Southern Vietnam 2. . Pervez Haider Zaidi, International Maize and Wheat Improvement Center (CIMMYT) in India. The dissertation would be defended on Foundation level examination board Vietnam Academy of Agricultural Sciences August, 2018 Dissertation can find out at: 1. Vietnam Academy of Agricultural Sciences 2. Maize Research Institute 1 GENERAL INTRODUCTION In Vietnam, drought is one of major constraints for maize production. Consequently, damage caused by drought was estimated more than 30%, up to 70- 80% or no harvest at all. Vietnam is one of the most affected countries by climate change and drought has been more and more regular and severe. Therefore, it is annually about and million ha maize area facing more stresses especially drought. Maize area, grain yield and production in Vietnam in 2017 was respectively that it is lower than the global average ( ). Meanwhile, the demand becomes more and more, leading to exceeding the supply Therefore, breeding drought tolerant maize varieties is the most important orientation for rainfed maize areas. Therefore, it is essential for the thesis “Agronomic traits associated with drought tolerance of tropical-derived germplasm for
