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Korean markets have recently shown a strong demand for grapes with large-sized seedless fruits (Heo and Park, 2015), and several attempts to introduce world-class seedless grape cultivars, such as Thompson Seedless and Crimson Seedless, have been made. However, they are not adapted to Korea’s climate and are not recommended for commercial planting in Korea. Therefore, seedless grapes have been produced in Korea by applying gibberellins (GA₃) to tetraploid seeded grape cultivars such as Kyoho. Producing seedless fruits from seeded grape cultivars generally requires two GA₃ applications and cluster thinning treatments before and after blooming

In Korea, consumer demand for seedless grapes with high quality and large berries is increasing. Although a lot of effort into introducing European stenospermocarpic grape cultivars in Korea has been made, it did not work because they were not adaptable to growth conditions in Korea. In Korea, most seedless grapes are currently produced by applying plant growth regulators twice, using seeded grape cultivars such as Kyoho and Shine Muscat. Because this method is time-consuming and labor intensive, it is becoming more important to breed and introduce seedless grape cultivars that can reduce labor and time. The characteristics of parthenocarpy, stenospermocarpy,

Vitis amurensis is a member of the family Vitaceae and is found in China, Japan, and Korea (Venuti et al., 2013). Several researchers have reported that it has high disease resistance and freezing tolerance (Jiao et al., 2015; Liu and Li, 2013) and contains many health-promoting compounds such as anthocyanin and resveratrol (He et al., 2015). Therefore, although V. amurensis has received great attention in Korea (Park et al., 2015), it has been mainly used for making processed products because of its generally low fruit quality (

Because of the success of the grape cultivar Shine Muscat in Korea, consumer interest in high-quality seedless grapes has significantly increased (Kim et al., 2021). In Korea, most seedless grapes are currently produced by treating genetically seeded grape cultivars, such as Shine Muscat and Kyoho, with plant growth regulators before and after flowering. Unfortunately, although the method effectively induces production of seedless fruits, the standardization of fruit quality is difficult to achieve because it is not easy to set an optimal treatment time and concentration of the growth regulator. Furthermore, the additional labor required, which accounts for a

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