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‘Hwawang’: A Good Quality and Early-Maturing Rice Variety Adaptable for Rice–Cash Crop Rotation System
소득작물 후작용 고품질 조생 벼품종 ‘화왕’
Korean. J. Breed. Sci. 2018;50(4):534-539
Published online December 1, 2018
© 2018 Korean Society of Breeding Science.

Jong-Hee Lee, Ji-Yoon Lee, Un-Sang Yeo, You-Chun Song, Dong-Soo Park, Un-Hwa Hwang, Soo-Gwan Park, No-Bong Park, Sang-Yeol Kim, Seong-Hwan Oh, Sang-Ik Han, Min-Hee Nam, Jong-Gi Lee, and Jun-Hyeon Cho*
이종희, 이지윤, 여운상, 송유천, 박동수, 황운하, 박수권, 박노봉, 김상열, 오성환, 한상익, 남민희, 이종기, 조준현*

Natioanal Institute of Crop Science, RDA, Miryang, 50424, Republic of Korea
농촌진흥청 국립식량과학원
Correspondence to: E-mail: hy4779@korea.kr, Tel: +82-55-350-1169, Fax: +82-55-352-3059
Received July 3, 2018; Revised July 5, 2018; Accepted November 19, 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
‘Hwawang’ is an early maturing and short statured rice cultivar adaptable to the rice–cash crop rotation system that was developed by the rice breeding team of the Department of Southern Crop, National Institute of Crop Science (NICS), Rural Development Administration (RDA), Korea, in 2012. This cultivar was derived from the cross of YR25867 (Hitomebore//YR21247-B-B-B-49-1/Sasanishiki BL4) and YR25866 (Akidagomachi//YR21247-B-B-B-49-1/Sasanishiki BL4) during the 2005/2006 winter season and was fixed as a homozygous line by a doubled haploid breeding system. In the replicated yield trial in 2009, a promising line (YR26253Acp26-1) showed a good phenotype and high yield potential, and so it was selected and designated as ‘Milyang256’. The local adaptability test of ‘Milyang256’ was carried out at three locations from 2010 to 2012. It was named ‘Hwawang’ and had a high head rice ratio and good eating quality. The culm length of ‘Hwawang’ averaged 62 cm during the yield trials and was 10 cm shorter than that of ‘Keumo’. The number of spikelets per panicle of ‘Hwawang’ was significantly lower than that of ‘Keumo’, but the number of tillers per hill was higher. This variety showed resistance to bacterial blight disease but was moderately susceptible to both leaf and neck blast. The milled rice yield of ‘Hwawang’ was 452 kg/10 a at the late transplanting stage of the local adaptability test. Thus, ‘Hwawang’ is well adapted to the rice–cash crop rotation system in the southern plain area. (Registration No. 5106)
Keywords : Rice, Hwawang, Good grain quality, Early maturing


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