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Genetic Studies of Major Agronomic Traits in Hybrid Populations of Maize Inbred Lines.  

김남수 (강원대학교 농업생명과학대학 생명공학부)
이주경 (강원대학교 농업생명과학대학 생명공학부)
박종열 (강원대학교 산람과학대학 산림자원학부)
박기진 (강원대학교 산람과학대학 산림자원학부)
류시환 (강원대학교 산람과학대학 산림자원학부)
신지현 (강원대학교 농업생명과학대학 생명공학부)
이명숙 (강원대학교 농업생명과학대학 생명공학부)
민황기 (강원대학교 산람과학대학 산림자원학부)
Publication Information
Korean Journal of Plant Resources / v.17, no.3, 2004 , pp. 304-313 More about this Journal
Abstract
This study was conducted to find out the scientific maize breeding protocol for developing high performing single cross hybrid using introduced U.S. elite inbred lines; the pattern of inheritance, heterosis and heritabilities of six agronomic traits were studied in the progenies derived from five crosses (Mo17/B14A, Va85/B73, C103/ND203, FR35/Oh43, Wf9/A632). Among the five cross combinations, the cross combination of Mo17/B14A showed the highest heterosis for the most agronomic traits. Among 6 agronomic traits, the grain yield showed the highest heterosis effect in most cross combinations. Most of the agronomic traits in this study showed more than 50% heritability for six cross combinations, with an exception of the ear length trait. In conclusion, since Mo17/B14A showed excellent performance for most of the agronomic traits, these inbred lines were desirable combination and regarded as superior germ plasm sources for F1 hybrid development. The results of current studies will be utilized for developing high performing single cross hybrid from maize inbred lines, and will be used for the further genetic analysis of agronomic traits and maize breeding programs.
Keywords
agronomic trait; cross combination; $F_1$ hybrid development; Maize; maize breeding program;
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