Development of Harvested within a Year New Citrus Variety ‘Gaeulhyang’(C. spp)

The new citrus variety ‘Gaeulhyang’(C. spp) was developed in 2011 by the Jeju Agricultural Research and Extension Services. It was developed by crossbreeding ‘Ehimekashi No. 28’(C. spp) as the seed parent and ‘Kanpei’(C. spp) as the pollen parent. The first selection was made in 2016, the final selection in 2018, and it was officially registered as a protected variety in 2021. The average fruit weight is approximately 180g, with a sugar content of 13.4°Bx and an acidity of 0.71%, resulting in a high sugar-to-acid ratio. The peel thickness is about 2.6 mm, making it thin and easy to peel, and the occurrence of puffing is minimal. As of the harvest period (late November), the free sugar content was 12.47±0.47g/100g. Specifically, the sucrose content is 1.7 and 1.3 times higher compared to ‘Satsuma mandarin’ and ‘Ehimekashi No. 28’, respectively, which are harvested around the same time, demonstrating the characteristics of a high-sugar variety. This newly developed variety allows for stable harvesting within the year, potentially reducing production costs for farmers. Moreover, it is expected to help diversify cultivation structures that are currently concentrated on specific varieties such as ‘Shiranuhi’ and ‘Kanpei’.