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Assessment of DNA Markers Related to Days to Heading Date, Tiller Number, and Yield in Korean Wheat Populations
국내 밀 집단의 출수일수, 분얼수 및 수량 관련 표지인자 평가
Korean J Breed Sci 2018;50(3):211-223
Published online September 1, 2018
© 2018 Korean Society of Breeding Science.

Seong-Woo Cho1, Taek-Gyu Kang1, Seong-Wook Kang1, Chon-Sik Kang2, and Chul Soo Park1*
조성우1, 강택규1, 강성욱1, 강천식2, 박철수1*

1Department of Crop Science and Biotechnology, Chonbuk National University, Jeonju 561-756, Korea
2National Institute of Crop Science, RDA, Wanju 565-851, Korea
1전북대학교 작물생명과학과, 2국립식량과학원
Correspondence to: (E-mail: pcs89@jbnu.ac.kr, Tel:+82-63-270-2533, Fax:+82-63-270-2640)
Received August 7, 2018; Accepted August 14, 2018.
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Molecular markers of doubled-haploid (DH) and long spike Korean wheat cultivar populations were evaluated to improve the yield
potential of Korean wheat breeding programs by improving the tiller numbers. In Korean wheat cultivars, the tiller number was affected more by vernalization (Vrn) and photoperiod (Ppd) than by tiller inhibition gene (tin) and fertile tiller inhibition gene (ftin). Also, it was negatively correlated with the yield. In DH lines, the tiller number was significantly affected by neither the tiller inhibition genes nor Vrn and Ppd. Additionally, it was not significantly correlated with the yield. However, the adaptability of both SSR markers, Xgpw2206 and Xgwm247, was higher in the DH lines than in the other populations. In the long spike population, the tiller number differed according to the Ppd-D1 allele, affecting the yield. In this study, genes and molecular markers related to the tiller number, as described in previous studies, might be difficult to use to evaluate the tiller number and yield of the Korean wheat population. Hence, continuous study is necessary to develop molecular markers suitable for improving the tiller number and yield of Korean wheat cultivars.
Keywords : Tiller, DNA marker, Day to heading date, Grain yield, Korean wheat


September 2018, 50 (3)
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