단백질 함량 증가 고품질 특수미 ‘드리미5호’ 육성

• Published in: Korean journal of breeding Vol. 54; no. 4; pp. 421 - 432
• Main Author: 박재령(Jae-Ryoung Park), 김은경(Eun-Gyeong Kim), 장윤희(Yoon-Hee Jang), 이강섭(Gang-Seob Lee), 김경민(Kyung-Min Kim)
• Format: Journal Article
• Language: Korean
• Published: 한국육종학회 01.12.2022; The Korean Breeding Society
• Subjects: 농학; Tissue culture; Grain quality; Drimi5ho; Protein; Rice
• ISSN: 0250-3360; 2287-5174
• DOI: 10.9787/KJBS.2022.54.4.421

Rice is a staple food in most countries, and thus, diversifying its value is necessary. Recently, the focus on good health has increased,and rice cultivars with improved properties should be bred based on consumer demands. At the Plant Molecular Breeding Laboratory of KyungpookNational University, “Hwayeong” was tissue-cultured to derive mutant populations. In the mutant lines, “P35” with high protein content andexcellent agricultural traits, was backcrossed with “Ilmi” three times, and the final selected line was called “Drimi5ho.” The heading dateof “Drimi5ho” was August 11 (107 d after sowing), which was 5 d later than that of “Ilmi” (August 5, 101 d after sowing). The culmlength of “Drimi5ho” was 71 cm, the panicle length was 18 cm, the number of panicles per hill was 13, the number of spikelets per paniclewas 113, the ratio of ripened grain was 90.5%, and the 1,000-grain weight was 22.6 g. When "Drimi5ho" was planted ordinary plantation,the yield in the southern mountainous area was 526 kg/10a. Lodging was not observed when “Drimi5ho” was grown in the field with standardfertilization (N-P2O5-K2O = 9-4.5-5.7 kg/10a). This rice cultivar was resistant to leaf/neck blast, bacterial blight (K1, K2, and K3), rice stripevirus, rice black-streaked dwarf virus, and rice dwarf virus. The milled grain of “Drimi5ho” was clear and transparent without any chalkiness;moreover, the grain shape was round and short. Although it is a specialty rice with increased protein content, the taste of the rice and thegrain quality were excellent (Registration No. 6829). KCI Citation Count: 0