TAILIEUCHUNG - Summary of doctoral thesis: Study on breeding medium maturity maize hybrid with high yield for Southeast region and Central highland of Vietnam

Purposes of research: breeding and selecting some inbred lines and promissing crosses for maize breeding and production program in Southeast and centre Highlands Breeding new hybrid varieties with medium maturity (90- 96 days), high yield, good quality, suitable to conditions in these regions; determining some cultivation technologies such as plant density and row spacing, fertilzer doses for new hybrids with the purpose of introducing and transfering inovative techniques for farmers in these regions. | Ì1 lí MINISTRY OF EDUCATION MINITRY OF AGRICULTURE AND TRAINING AND RURAL DEVOLOPMENT VIETNAM ACADEMY OF AGRICULTURAL SCIENCES VU NGOC QUY STUDY ON BREEDING MEDIUM MATURITY MAIZE HYBRID WITH HIGH YIELD FOR SOUTHEAST REGION AND CENTRAL HIGHLAND OF VIETNAM Ranch of study Genetic - PlantBreeding Code SUMMARY OF DOCTORAL THESIS Hanoi- 2014 Ì1 lí This theisis is completed at VIETNAM ACADEMY OF AGRYCULTURAL SCIENCES Science supervisor 1. Dr. Mai Xuan Trieu 2. As. Prof. Dr. Nguyen The Hung Critic 1 . Critic 2 . Critic 3 . The thesis will be defented before Council for thesis assessment at Institutional level held at Vietnam Academy of Agricultural Sciences 2014 This Thesis can be referred to at 1. National Library 2. Library of Vietnam Academy of Agricultural Scienses 3. Library of Naional Maize Research Institute Ì1 If 1 INTRODUCTION 1. URGENCY OF THE THESIS Southeast and Central Highlands are two large commodity maize producing regions in Vietnam s southern provinces. In 2012 the average maize yield in these regions was tons ha in which Southeast region and Central Highlands was tons ha and tons ha by 119 4 and 103 4 compared with country s maize yield tons ha and the global maize yield tons ha respectively. In order to improve the efficiency of maize production in Southeast region and Central Highlands through actively supplying seeds with cheap price it is essential to implement the thesis Study on breeding medium maturity maize hybrids with high yield for Southeast region and Central Highlands 2. PURPOSES OF RESEARCH Breeding and selecting some inbred lines and promissing crosses for maize breeding and production program in Southeast and centre Highlands Breeding new hybrid varieties with medium maturity 90- 96 days high yield good quality suitable to conditions in these regions. Determining some cultivation technologies such as plant density and row spacing fertilzer doses for new hybrids with the .

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