Abstract: Seedless grape is convenient to eat and easy to make raisins. Because of these characters, seedless breeding becomes more and more important. According to this tendency, we cultivate a new table grape variety Zhongputao No.18. Zhongputao No.18 is a new seedless and late-ripening table grape cultivar with excellent quality. It was derived from the cross of Wuhezi as female parent and Muscat Hamburg as the pollen. The cross was made in spring of 2003. By embryo rescue technology, tissue culture seedlings were obtained. Next year the seedlings were cultivated in greenhouse, then planted in the nursery. It was initially selected in 2006 for its good quality. After several years observation, it was characterized by seedless, high quality, good appearance, storage and mid-resistance. After regional adaptability trial in different sites, it was finally selected in 2018. We applied for the registration as a new cultivar, and it was put on records by the Henan Province Committee for Forest Variety Validation in 2020. Zhongputao No.18 belongs to Vitis vinifera. The vigor of plant is medium, young branches are green with red stripe, mature branches are reddish-brown, branches are round, the surface of branches has pinstripe. Length of internode is middle, ordinarily 6~11 cm long. Young sprout of growth potential is medium. The young leaves are aubergine, glossy and less villi, mature leaves is heart-shaped, color is green, leaves are flat and medium thickness. The cultivar has hermaphrodite flower and the first inflorescence is usually borne on the 4th or 5th node. The shape of cluster is conicalness, no pair of ear, the natural fruiting bunch weight is 600 g averagely with the length and width being 20 cm and 12 cm, respectively. The bunch is loose and tidy. The berry is purple red and long ellipse, average weight is 7.3 g, and the longitudinal diameter and transverse diameter are 2.1 cm and 1.5 cm, respectively. The berry is crisp with middle juice and pleasant sweetness and sourness. The soluble solids content is 18.0%, total sugar is 16.2%, and titration acid is 0.30%. The content of tannin is 686 mg·kg-1, the content of vitamin C is 5.76 mg·kg-1. The flavor is sweet, the quality is good. In Zhengzhou area, the time of bud-burst is the beginning of April, and flowering at mid May, the fruits mature on beginning of September. The yield is about 22.5 tones per hectare. The grape has strong pathogen resistance, but has weak resistance to downy mildew. This grape variety has the good yield, good storage and high adaptability. In order to produce high quality fruit, the cultivar uses the Y shape frame and short spur pruning technique. This grape behaves well in the sandy soil, clay, alluvium of the Yellow River. Balanced application of both organic and chemical fertilizers is based on the plant every germination and development stage. Zhongputao No.18 has a wide adaptability, which can be cultivated in the most areas of Henan province, and similar climate and geographical condition areas.
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