In Korea, ‘Campbell Early’, ‘Shine Muscat’, and ‘Kyoho’ account for more than 90% of the Korean grape cultivation area (Kim et al., 2021). As a result, the supply of grapes in the Korean market is excessive during a certain period. Consequently, it is difficult to avoid a reduction in the wholesale price, and the opportunity for consumers to experience other grape cultivars becomes limited. In the current scenario, in which imports are occurring rapidly following the recent implementation of the free-trade agreement with Chile and the United States, it is necessary to cultivate various high-quality grape cultivars to enhance the competitiveness of the Korean grape market and consumer satisfaction.
Numerous attempts to develop new grape cultivars have been made by Korean grape breeders (Heo and Park, 2017; Park et al., 2020; Roh et al., 2018). However, none of them were successful in developing a new cultivar that can replace ‘Campbell Early’ as an early-maturing cultivar. Our research team has tried to create useful triploid and aneuploid genetic resources, which have advantages of producing seedless grapes, with varying phenotypes of ripeness, quality, and skin color (Heo and Park, 2016; Kim et al., 2020; Park et al., 2015). As a result, we have finally developed a triploid seedless grape cultivar, Black Star—an early-maturing cultivar with excellent quality and adaptability to relatively unfavorable environments during cultivation.
Heo, J.Y. & Park, S.M. 2016 Variation in fruit characteristics of 3× progenies obtained from a cross between 4× and 2× grape cultivars Weonye Gwahag Gisulji 34 761 770 https://doi.org/10.12972/kjhst.20160080
Heo, J.Y. & Park, S.M. 2017 ‘Sujeong’: A green seedless table grape cultivar HortScience 52 463 464 https://doi.org/10.21273/HORTSCI14577-19
Heo, J.Y., Park, K.S., Yun, H.K. & Park, S.M. 2007 Degree of abortion and germination percentage in seeds derived from interploid crosses between diploid and tetraploid grape cultivars Hort. Environ. Biotechnol. 48 115 121
Kim, S.H., Jeong, S.H. & Heo, J.Y. 2021 Incidence of 14 grapevine viruses in Korean vineyards Not. Bot. Horti Agrobot. Cluj-Napoca 49 12490 https://doi.org/10.15835/nbha49412490
Kim, S.H., Kwon, J.H., Park, Y.S. & Heo, J.Y. 2020 In vitro embryo rescue for the production of hypotetraploids after cross between hypotetraploid and tetraploid grape cultivars Not. Bot. Horti Agrobot. Cluj-Napoca 48 503 508 https://doi.org/10.15835/nbha48111795
Park, Y.S., Heo, J.Y. & Park, S.M. 2016 Production of hypo- and hypertetraploid seedlings from open-, self-, and cross-pollinated hypo- and hypertetraploid grape Weonye Gwahag Gisulji 34 275 276 https://doi.org/10.12972/kjhst.20160081
Park, Y.S., Heo, J.Y., Um, N.Y., Bang, S.B. & Park, S.M. 2015 Growth and fruit characteristics of hypo-, hyper-tetraploid grapes Yugjong Haghoeji 47 192 198 https://doi.org/10.9787/KJBS.2015.47.3.192
Roh, J.H., Hur, Y.Y., Jung, S.M., Park, K.S., Yun, H.K., Nam, J.C., Hwang, H.S., Im, D.J. & Chung, K.H. 2018 ‘Hongju’: A seedless table grape cultivar HortScience 53 1909 1910 https://doi.org/10.21273/HORTSCI13368-18