Breeding of a New High Quality Fragrant Rice Variety'Guiyexiangzhan'by Molecular Marker-Assisted Selection
In order to cultivate a new aromatic rice variety with high yield,high quality,and good comprehensive resistance in the field,this study utilized the high-quality and resistant varieties'Liuxiangzhan'and'Yexiangzhan'as parents.Through molecular marker detection and pedigree selection,a new high-yield,high-quality,and aromatic conventional rice variety named'Guiyexiangzhan'was bred.This variety combines blast resistance genes Pi5,Pia and Pita with the fragrance gene Badh2-E7,alongside comprehensive field agronomic traits and evaluation of grain aroma and flavor through chewing.'Guiyexiangzhan'boasts high and stable yields,good comprehensive field resistance,superior rice quality,and a distinct aroma.It was successively approved by the Crop Variety Appraisal Committees of Guangxi and Jiangxi in 2020 and 2021,demonstrating significant potential for widespread adoption and application.The development of'Guiyexiangzhan'can effectively meet the market's urgent demand for high-yield,high-quality aromatic rice varieties.Additionally,it provides a solid material foundation and serves as a technical reference for the selection and breeding of new aromatic rice varieties.
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