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2021 Vol.66, Issue 2 Preview Page

Original Research Article

Evaluation of Regional Adaptability in Introduced Super Sweet Corn Hybrids and Heritability of Agronomic Traits

도입 초당옥수수 교잡종의 지역 적응성 및 농업 형질의 유전력 평가

Shin-Young Lee1
,
Jong-won Kang1
,
Seung-hyun Wang2
,
Tai-choon Park1
,
Jong-Wook Chung3*
,
Yoon-Sup So4*
이 신영1
,
강 종원1
,
왕 승현2
,
박 태춘1
,
정 종욱3*
,
소 윤섭4*
1Graduate Student, Department of Agronomy, Chungbuk National University, Cheongju 28644, South Korea
2Junior Scientist, Maize Research Institute, Gangwon-do Agricultural Research and Extension Services, Hongcheon 25160, South Korea
3Associate Professor, Department of Industrial Plant Science & Technology, Chungbuk National University, Cheongju 28644, South Korea
4Associate Professor, Department of Crop Science, Chungbuk National University, Cheongju 28644, South Korea
1충북대학교 대학원 농학과 대학원생
2강원도농업기술원 옥수수연구소 농업연구사
3충북대학교 특용식물학과 교수
4충북대학교 식물자원학과 교수
*Corresponding Author
*Corresponding Author
1 June 2021. pp. 130-137
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Abstract

This study evaluated newly introduced, commercial super sweet corn hybrids (Zea mays L.) for their potential as breeding materials. Agronomic traits were measured and variance components were obtained using a linear mixed model to estimate the heritability. The trials were carried out in 2018 at two locations (Haenam and Oksan in South Korea). All traits had low heritability, except for mid tasseling and silking days. These traits with low heritability mostly had low genetic variance component estimate. In case of ear height ratio, significant genotype by location appeared to be responsible for low genetic variance, which in turn led to low heritability. Low heritability estimates from the trials with commercial hybrids were perhaps because those hybrids were highly improved for commercial success. Hence, this does not necessarily point to them having poor potential as breeding materials. To overcome low heritability, significant genotype by environment interaction, and achieve high selection efficiency, intermating among hybrids is recommended to create new recombinants before inbred line development.

Keywords
adaptability
agronomic trait
breeding
heritability
super sweet corn
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Information
  • Publisher :The Korean Society of Crop Science
  • Publisher(Ko) :한국작물학회
  • Journal Title :The Korean Journal of Crop Science
  • Journal Title(Ko) :한국작물학회지
  • Volume : 66
  • No :2
  • Pages :130-137
  • Received Date : 2021-02-19
  • Revised Date : 2021-05-09
  • Accepted Date : 2021-05-10
  • DOI :https://doi.org/10.7740/kjcs.2021.66.2.130
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