QTL Detection Associated with Eating Quality Based on Palatability Test in Japonica Rice (Oryza sativa L.)

• Published in: Plant breeding and biotechnology pp. 342 - 353
• Main Authors: 조영찬, 백만기, 서정필, 원용재, 이정희, 김정주, 박현수, 김우재, 권순욱, 조용구, 김보경, 이점호
• Format: Journal Article
• Language: English
• Published: 한국육종학회 30.12.2014
• Subjects: 농학
• ISSN: 2287-9358; 2287-9366
• DOI: 10.9787/PBB.2014.2.4.342

A recombinant inbred line (RIL) population derived from the cross between Ilpumbyeo (a Japonica of high eatingquality) and Moroberekan (a tropical Japonica type of low eating quality) was used for mapping QTLs associated with grainphysicochemical properties and eating quality traits in rice. A total of 182 recombinant inbred lines were evaluated for twophysicochemical traits, alkali digestive value and amylose content, and five traits associated with eating quality including glossiness ofcooked rice determined by Toyo-taste meter, and glossiness, stickiness, hardness and overall evaluation for taste evaluation by panels. A total of 30 QTLs associated with seven traits in 10 loci on chromosomes 1, 3, 5, 6, 10, and 12 were identified. The most critical regionsfor eating quality were on chromosomes 3, 5 and 6 by Ilpumbyeo alleles, whereas Moroberekan contributed a total of 6 loci onchromosomes 1, 10 and 12. The QTL region on chromosome 5 contains the novel alleles for eating quality from Ilpumbyeo. MAS usingDNA markers tightly linked with those QTLs will be useful for breeding Japonica cultivars with high eating quality. KCI Citation Count: 1