Yellow-horn (Xanthoceras sorbifolium Bunge) is a rare woody oil plant mainly distributed in China, with nutritious seeds that contain a high oil content in the seed kernels (Xie and Zhang, 2018). It is suitable for both biodiesel production and high-grade edible oil (Liu et al., 2017). Because it is mainly distributed in northern China, it has been referred to as “northern oil tea” (Chang et al., 2019). The State Forestry Administration has listed yellow-horn as the main tree species for the construction of biomass diesel raw material base. At the same time, its large number of flowers, rich flower type, and long flowering period make it an ideal tree for landscaping (Yang et al., 2021).
In recent years, the cultivation of yellow-horn has received extensive attention in China (Ao et al., 2012). Great progress has been made in breeding new and improved varieties. The new varieties reported so far are both ornamental and high-yielding. Most 10-year-old trees can produce more than 1500 kg/ha with intensive field management. ‘Yan Zi’ is a new variety of yellow-horn bred by the team headed by Y.A. It has a short inflorescence axis, dense inflorescences, and a small range of coloration at the base of the petals, which is deep purple. The cultivar is characterized by beautiful flowers, along with its fruit production. The new variety is highly adaptable, showing tolerance to cold and drought as well as barren and saline environments. It can be widely planted in northern China.
Ao, Y., Duan, J., Yu, H.Y., Jiang, C.Y. & Ma, L.Y. 2012 Research progress on Xanthoceras sorbifolia Bunge J. China Agr. Univ. 17 197 203 https://doi.org/CNKI:SUN:NYDX.0.2012-06-026
Chang, Z.J., Li, H. & Bu, L.F. 2019 Quality comparison of cold pressed and hot pressed Xanthoceras sorbifolia Bunge seed oils China Oils and Fats 44 121 123 https://doi.org/CNKI:SUN:ZYZZ.0.2019-10-026
Liu, Y.L., Huang, Z.D., Ao, Y., Li, W. & Zhang, Z.X. 2017 Transcriptome analysis of yellow horn (Xanthoceras sorbifolia Bunge): A potential oil-rich seed tree for biodiesel in China PLoS One https://doi.org/10.1371/journal.pone.0074441
Xie, Z.Y. & Zhang, W.H. 2018 Effects of drought and rewatering on growth and photosynthetic physioecological characteristics of Xanthoceras sorbifolia J. Appl. Ecol. 29 1759 1767 https://doi.org/10.13287/j.1001-9332.201806.007
Yang, F., Han, S.S., Nan, Y., Chen, X.J., Sun, Y.B., Liu, S.C. & Ma, B.P. 2021 Progress in research and development of Xanthoceras sorbifolia China J. Chinese Materia Medica 46 4334 4343 https://doi.org/10.19540/j.cnki.cjcmm.20210524.603