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논문 기본 정보

자료유형
학술저널
저자정보
류시환 (강원대학교) 최재근 (강원도농업기술원) 김문종 (강원도농업기술원) 한정헌 (강원도농업기술원) 왕승현 (강원도농업기술원) 김희연 (강원도농업기술원) 김기선 (강원도농업기술원) 남궁민 (강원도 농업기술원) 박종열 (강원도농업기술원) 박기진 (강원도농업기술원)
저널정보
강원대학교 농업생명과학연구원(구 농업과학연구소) 농업생명환경연구 농업생명환경연구 제34권
발행연도
2022.10
수록면
248 - 256 (9page)

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초록· 키워드

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The main procedures of maize breeding are inbred line development and hybrid selection. Inbred line development is an essential procedure for the creation of good hybrids, but in South Korea, inbred line development is completely dependent on conventional breeding methods. This conventional inbred line development system is a tedious and time-consuming procedure. Doubled haploid technology in maize is a rapid inbred line development method and many foreign maize research institutes are actively using this technology. In this study, we aimed to set up and utilize doubled haploid technology in our breeding program. Inducer lines, which can produce haploid seeds, are a prerequisite for doubled haploid breeding. The Maize Research Institute secured the right to use tropically adapted haploid inducer lines (TAILs). The number of days to silking for TAILs was 72 and the flowering time was appropriate for crossing with other populations. When 48 maize populations were crossed with the inducer, the average haploid induction rate was 6.0%. Haploid induction rate for 2014 through 2017 were 3.9, 4.8, 6.7, and 8.3%, respectively. When we compare the chromosome doubling stage, the inbred line production rate of seedlings was higher than that of germinated seeds. Agronomic characteristics of inbred lines developed by doubled haploid technology were tested and those lines will be good resources as parent plants for making hybrids. Future work will aim to increase induction rate and the selection efficiency of haploid seeds, but our breeding efficiency and capacity in South Korea will be greatly improved by this technology.

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