Breeding report of a new table grape cultivar Yuexiu Seedlless

Abstract: Yuexiu Seedless is a medium-early-season, table grape with excellent appearance. The seeding was derived from a cross between Red Globe and Centennial Seedless in 2001 at experimental field. It was initially selected in 2006 for its bright colors and seedless flesh. Through artificial hybridization pollination, 1558 hybrid seeds were got. After regional adaptability testing at three sites (including Fuxin City, Beizhen County, Neimeng province) over four years from 2010 to 2014, it was finally selected in 2015 and was awarded and registered by the Ministry of Agriculture and Rural Affairs of the People's Re-public of China in 2021. The registration number is GPD grape (2021)210008. Yuexiu Seedless belongs to Eurasian species, the vigor of plant is not very strong. The color of dorsal and ventral side of inter-nodes is green with red stripes. Young leaves are green with yellow spots, upper and lower surfaces with white fluff. The mature leaves are pentagonal in shape, large, 18.42 cm in length, 18.27 cm in width, five-lobed. The leaf surface is flat, and the upper and lower surfaces are smooth and hairless. The mature branches are yellow-brown with an average internode length of 10.3 cm and the nodes greater than 7 nodes. The tendrils are intermittent. The flower is hermaphrodite. The fruit clusters are conical, medium in size and neat with the length of 22.6 cm and the width of 14.5 cm. The average cluster weight is 484.1 g and the biggest one is 697.8 g. The color of berry is red-violet and the shape is long elliptic, the average weight is 4.7 g and the biggest one reaches 7.3 g. The flesh is crisp and sweet. It is a seedless variety. The contents of soluble solids, total acid, total sugar was 18.1%, 0.44%, 17.36%. In the Xiongyue area of Lia-oning province, the beginning date of bud-burst is at end-April, and flowering at the early-June, starts to color in early and mid-July, and fully matures at mid-to-late August. It takes about 115-125 d from germi-nation to harvest and belongs to a medium-early maturing variety. The germination rate was 62.5%, the average fruiting shoot rate was 72.7%. This variety can fruit in the second year and with high yield po-tential, but the yield is too high the fruit color is not good. Plants are easy to cultivate because of the strong adaptability and resistance to disease. It is suitable for cultivation in Xiongyue and similar areas.