Breeding report of a new table grape cultivar Yuexia xiangfeng

Abstract: Yuexiaxiangfeng is a medium maturing table grape with excellent color and strong strawberry aroma, derived from a cross between Jumeigui and Kyoho made in 2010 at the breeding nursery. 960 hybrid seeds were harvested. The seeds were sown in spring 2011. The seedling numbered 10-6-28 first flowered and bore fruit in 2013. It was determined as the superior line due to the beautiful color and strong aroma. Through three years of continuous observation and screening of the trees grafted on Beda rootstock, it was determined as the final line in 2016 and was further tested for planting. The regional adaptability testing was carried out at three sites (including Liaoyang city, Beizhen county, Sujiatun county). It was registered by the Ministry of Agriculture and Rural Affairs of the People’s Republic of China in 2022. The registration number is GPD grape (2022) 210007. Yuexiaxiangfeng is a tetraploid. The flower is hermaphrodite. The color of dorsal and ventral side of internodes is green with red stripes. The tendrils are intermittent. The young leaves are green with red spots, upper and lower surfaces are smooth and the mature leaves are pentagonal in shape, five-lobed and flat with the shallow upper and lower clefts. The average leaf area is 302.9 cm2 . The mature branches are red-brown with a moderatelength internode. The cluster of Yuexiaxiangfeng is conical in shape with the average weight is 582.6 g, moderate tightness without shoulder. The color of berry is red and the shape is round, the average weight of berry is 5.74 g and the maximum weight is 7.3 g. The peel is slightly thick with the medium fruit powder, the flesh is slightly soft with flesh sac. There are 2-3 seeds in a single berry, mostly 2 seeds. The berry has strawberry aroma. The soluble solids content is 16.9%, the titratable acid is 0.76%.In Xiongyue area of Liaoning province, it begins to sprout in late April in the open field cultivation, and blooms in late May to early June. The berry begins to color from Mid to late July. The fruit ripens in late August to early September. Normally, it takes about 125 d from germination to harvest. This cultivar owns strong growth vigor and the Beta rootstock is suitable for it to get more harvest. The bud burst rate is 81.3%, the average fruiting shoot rate is 70.5% and the resulting coefficient is 1.48. The first inflorescence is mostly on 3-4 node with medium fruit setting ability. The flower buds are well differentiated and the fruiting ability is strong. Only one inflorescence is usually reserved for the strong branches and the mean branches. The cultivar bears fruit in the second season, and has early fruit fertility. The yield is about 25 500 kg·666.7 m-2 in the third year. The disease resistance and adaptability were similar to those of Kyoho. The spacing of 2 m × 4 m would be recommended. The short cane pruning and dragon-vine shape could be used for Yuexiaxiangfeng.