Breeding of a new wampee cultivar Huami Huangpi

Abstract: Huami Huangpi is a new wampee [Clausena lansium (Lour.) Skeels] cultivar with excellent appearance and honey flavor. The seedling was derived from a cross between a pure sweet cultivar Bait-ang Huangpi (female parent) and a main cultivar Yunanwuhe Huangpi (male parent), which located at College of Horticulture, South China Agricultural University (Tianhe district of Guangzhou city, Guang-dong province). In the spring of 2002, the artificial crossing was developed and finally 16 hybrid plants were obtained. From 2006 to 2008, the hybrid progenies (BW population) started blossoming and fruit-ing successively. And it was initially selected for its early maturing, excellent appearance, honey flavor and high quality. Then, the bud sticks of it were obtained for grafting, following with investigations of the resulting plants biological characteristics and fruit quality. After regional adaptability testing at three regions (Tianhe District of Guangzhou city, Conghua District of Guangzhou city and Chaozhou city,Guangdong province) over four years from 2016 to 2019, it has passed the expert identification in July 2019 and was certificated in November 2020 by the Crop Variety Approval Committee of Guangdong Province (assessment No. 20200004) and named Huami Huangpi. Trees of Huami Huangpi is spherical,with grey brown trunk. The leaves are deep green and wide-ovate, with shallow undulate margin, acute tip and broad-cuneate base. The average length and width of the leaf are 10.12 cm and 4.84 cm, respec-tively. The fruit shape is heart-shaped, with average fruit weight of 7.98 g and edible rate of 69.6%. The average longitudinal diameter and transverse diameter of the fruit are 30.42 mm and 21.54 mm, respec-  tively. The fruit apex is obtuse round with light depressed and the fruit base is round. And the radiate veins on it were obscure. The fruit peel is orange with peppery taste, and the flesh is waxy yellow, with tender texture, sweet and little sour taste and honey flavor. The seeds are reniform, full and the surface is smooth. The soluble solids content of fruit is 18.8%, the total soluble sugar is 11.8%, the total acid content is 0.1%, and the vitamin C content is 602 mg·kg^-1. Huami Huangpi is an early-maturing culti-var. It harvests from the late of June to early July in Guangzhou. The cultivar grows strongly with high yield, stable yield and wide adaptability. It is suitable for cultivation in the wampee production areas lo-cated in Guangdong province.