Breeding of a new late-maturing wampee cultivar 'Dafeng 1 Huangpi'

Abstract：'Dafeng 1 Huangpi' is a new wampee [Clausena lansium (Lour.) Skeels] cultivar with excellentappearance. The seedling was derived from the seedling population of‘Jixin'wampee, which locate at In-stitution of Fruit Tree Research, Guangdong Academy of Agricultural Science (Tianhe district of Guang-zhou city, Guangdong province) . It was initially selected in 2006 for its late maturing, high yield and quali-ty. Then, the robust bud sticks were obtained and used for grafting, followed by investigations of the result-ing plants' biological characteristics and fruit quality at 2007—2009. It is showed that their genetic traitswere stable. After regional adaptability testing at three sites (Guangzhou, Zhongshan and Dongguan city, Guangdong province) over five years from 2009 to 2014, it has passed the expert identification by Depart-ment of Agriculture of Guangdong Province in July 2016. It was certificated by Crop Varieties CertificationCommittee of Guangdong Province in January 2017 and named‘Dafeng 1 Huangpi'. Trees of‘Dafeng 1Huangpi'is spreading and spherical, with dark brown trunk. Its sprouting and branching ability are strong.The leaves are deep green and lanceolate, with entire margin, acuminate tip and deflective base. The aver-age length and width of the leaf are 10.8 cm and 4.2 cm, respectively. The fruit shape is long-cordate, withaverage fruit weight of 10.8 g and edible rate of 63.67%. The average longitudinal diameter and transversediameter of fruit are 34.46 mm and 23.22 mm, respectively. The fruit apex is acute round, without radiateveins. The fruit base is round, with obscure radiate veins. The fruit peel is tawny with bitter taste, and theflesh is waxy white, with tender texture, sweet and sour taste and well flavor. The seeds are oval or clavate, and were full and the surface is smooth. The soluble solids content of fruit is 17.4%, the total soluble sugaris 9.61%, the total acid content is 1.14%, and the vitamin C content is 0.438 mg·g^-1.‘Dafeng 1 Huangpi'is a late-maturing cultivar, in Guangzhou area, the initial time of flowering is usually early to mid-March, and the fruit development period is about 130 d. It harvest at late July, at least 15 days later than the control cultivar‘Jinjixin'. The cultivar has high yield that it can bear fruits in the second year after planting.The average yield of fifth trees could reach 416 kg per 666.7 m². The cultivar has broad adaption, and is suitable for cultivation in the wampee production areas located in Guangdong province.