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Breeding report of a new early-ripening and pink-peel strawberry cultivar Zhefenmei No.2

Date:2024/12/26 17:12:58 Visit:

AbstractZhefenmei No.2 is an early-maturing and pink-peel strawberry cultivar derived from a cross between Kaorino and Yuexin. Through artificial hybridization pollination, 223 hybrid seeds were obtained in March 2015 and finally 136 seedlings were planted in early September, in Hangzhou. From November 2015 to April 2016, 5 superior plants (15-20-11, 15-20-17, 15-20-20, 15-20-33, 15-20-78, 15-20-113) were initially selected based upon the plant growth vigor, disease resistance, mature period, fruit size and fruit quality, and then they were propagated for further test. Among them, superior line 15-20-17 was further screened out based on the trail from the end of 2016 to the beginning of 2017. During the next growing season, 2017 to 2018, line 15-20-17 sustained showed with early-maturing, beautiful fruit color, consistent fruit shape, good flavor, and high fruit firmness. After regional adaptability testing at three sites (including Linhai, Jiande and Fuyang) from 2018 to 2023, the traits of superior line 15-20-17 were stable and consistent, and it was finally identified as a new strain named Zhefenmei No.2. It obtained the authorization for new plant variety rights in September 2023 (No. CNA20191000753). The plant has moderate growth vigor with 21.3 cm in height and 32.8 cm in expansion diameter. The fruit is conical-shaped with pink-peel color and white flesh, the fruit cavity is absent or small. The fruit texture is fine, the flavor is fragrant and sweet. The average weight of the fruits on the first-class is 30.0 g and 16.9 g on whole plant. The fruit shape index is 1.29, and the firmness is 417.5 g·cm-2. It contains average soluble solids content of 12.2%, the total sugar content of 74.19 mg·g-1, the total acidity of 0.80%, vitamin C of 645.66 μg·g-1, amino acid of 2.03 mg·g-1, anthocyanin of 6.30 μg·g-1. The plants are moderately resistant to powdery mildew and gray mold, but susceptible to Anthracnose. Under the condition of facility forcing cultivation in Zhejiang Province, Zhefenmei No.2 is appropriate to transplant from early to mid-September, the budding period is in late October, the full-bloom period is in early November, and the harvest time is in mid-December. This variety flowers continuously, produces high yield, is suitable for forcing cultivation under protected conditions in most areas of China.



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