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Bacterial Blight-Resistant Medium Maturing Rice Cultivar ‘Haepum’ with High Grain Quality
벼흰잎마름병 저항성 고품질 중생 벼 ‘해품’
Korean J Breed Sci 2019;51(3):222-233
Published online September 1, 2019
© 2019 Korean Society of Breeding Science.

Jeong-Kwon Nam1, Hyun-Su Park1*, Man-Kee Baek1, Young-Chan Cho1, Woo-Jae Kim1, Jeong-Ju Kim1, Bo-Kyeong Kim1, Ki-Young Kim2, Woon-Chul Shin1, Jong-Cheol Ko1, Gun-Mi Lee1, Seul-Gi Park1, Chang-Min Lee1, Choon-Song Kim1, Jung-Pil Suh1, and Jeom-Ho Lee1
남정권1 · 박현수1* · 백만기1 · 조영찬1 · 김우재1 · 김정주1 · 김보경1 · 김기영2 · 신운철1 · 고종철1 · 이건미1 · 박슬기1 · 이창민1 · 김춘송1 · 서정필1 · 이점호1

1National Institute of Crop Science, RDA, Wanju 55365, Republic of Korea
2Research Policy Bureau, RDA, Jeonju 54875, Republic of Korea
1농촌진흥청 국립식량과학원, 2농촌진흥청 연구정책국
Correspondence to: (E-mail: mayoe@korea.kr, Tel: +82-63-238-5214, Fax: +82-63-238-5205)
Received June 3, 2019; Revised June 29, 2019; Accepted July 15, 2019.
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
‘Haepum’ is a bacterial blight-resistant, medium maturing rice cultivar with high grain quality. It was derived from a cross between ‘Iksan493’ (cultivar name ‘Jinbaek’) and the F1 cross between ‘Iksan495’ (‘Dacheong’) and ‘Iksan496’ (‘Jungmo1005’). Of these three cultivars, ‘Jinbaek’ is a bacterial blight-resistant mid-late maturing rice cultivar with high grain quality, ‘Dacheong’ is a mid-late maturing rice cultivar with multiple resistance to disease and insects, and ‘Jungmo1005’ is a mid-late maturing rice cultivar with lodging tolerance. To develop fixed lines, the anther culture method was applied to F1 plants. The cultivar ‘Haepum’ was selected using the pedigree method, yield trials, and local adaptability tests. The heading date of ‘Haepum’ was August 11th , three days earlier than that of ‘Nampyeong’ cultivar. Haepum’ is a cultivar tolerant to lodging and it has short culms. Due to its low rate of viviparous germination, ‘Haepum’ could be useful for preventing pre-harvest sprouting in cultivation of medium maturing rice in the southern plain area of Korea. ‘Haepum’ carries two bacterial blight resistance genes (Xa3 and xa5), and in our study, it exhibited high-level and broad-spectrum resistance against bacterial blight, including K3a, the most virulent race in Korea. ‘Haepum’ is also resistant to the rice stripe virus and moderately resistant to rice blast. The yield of ‘Haepum’ was similar to that of ‘Nampyeong’. ‘Haepum’ showed excellent grain appearance and good taste of cooked rice, and therefore it could contribute to the development of bacterial blight-resistant rice cultivars of improved quality. ‘Haepum’ would be suitable for cultivation in the southern plain area of Korea as well as in bacterial blight-prone areas. (Registration No. 6068)
Keywords : Haepum, Rice, Medium maturing, Bacterial blight, High grain quality, Pre-harvest Sprouting, Lodging Tolerance


September 2019, 51 (3)
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