Ornamental crabapple, a popular and well-known landscape plant, belongs to the genus Malus of Rosaceae. They are highly valued because of their breathtaking display of resplendent blooms in spring and loaded, colorful fruit in autumn and winter (Fiala, 1994; International Union for the Protection of New Varieties of Plants, 2003; Wang et al., 2021). With the proliferation of flower shapes, colors, and sizes, more and more double-flowered germplasms were released into the market, including ‘Xiang He’ (Hu et al., 2021a), ‘Rui Qin’ (Hu et al., 2021b), ‘Yangzhi Yu’ (Jiang et al., 2020), and ‘Zi Dieer’ (Zhou et al., 2020). Today, the breeding of new crabapples has turned to focus on the growth habits and forms of the trees to satisfy the public and private landscapers’ demand for different and distinctive varieties (Chu et al., 2020; Zhang et al., 2021).
‘Juan Zhulian’ has a columnar growth habit and bright-white flowers. The plant was selected and released by Nanjing Forestry University to meet this growing market demand. This cultivar has an obvious fastigiate and compact tree shape. It takes less space for cultivation and requires minimal annual pruning and maintenance. In addition, ‘Juan Zhulian’ showed wide adaptability and pest and disease resistance in Jiangsu Province, China.
Chu, W.Y., Fan, J.J. & Zhang, W.X. 2020 Phenological stability of ornamental crabapple and its response to temperature change J. Nanjing For. Univ. 44 5 49 54 https://doi.org/10.3969/j.issn.1000-2006.201903010
Hu, D.M., Xu, J.W., Han, Y.J., Dun, X.J., Wang, L.H. & Zhu, S.X. 2021a ‘Xiang He’ flowering crabapple HortScience 56 389 391 https://doi.org/10.21273/HORTSCI15654-20
Hu, D.M., Xu, J.W., Hui, W.L., Dun, X.J., Zhu, S.X. & Yang, J. 2021b Seven new crabapple cultivars such as ‘Rui Qin’ J. Nanjing For. Univ. 45 4 238 242 https://doi.org/10.12302/j.issn.1000-2006.202002022
International Union for the Protection of New Varieties of Plants 2003 Guidelines for the conduct of tests for distinctness, uniformity and stability [ornamental apple (Malus Mill.)] TG/192/1
Jiang, H., Zhou, T., Fan, J.J., Zhang, D.L., Zhang, L., Sun, Y.Y. & Zhang, W.X. 2020 ‘Yangzhi Yu’: A double-flowered ornamental crabapple HortScience 55 589 590 https://doi.org/10.21273/HORTSCI14677-19
Wang, X.S., Huang, Y.T., Tian, J., Zhang, J., Lu, Y.F., Qin, X.X., Hu, Y.J. & Yao, Y.C. 2021 A rose-red-flowered crabapple ‘Chunmei Donghong’ HortScience 56 860 863 https://doi.org/10.21273/HORTSCI15748-21
Zhang, L.L., Yin, Y.J., Mao, Y.F., Liu, Y.P., Pang, H.L., Su, X.F., Hu, Y.L. & Shen, X. 2021 ‘Hongyi’: A new columnar ornamental crabapple HortScience 56 1456 1458 https://doi.org/10.21273/HORTSCI16064-21
Zhou, T., Jiang, H., Zhang, W.X., Zhang, D.L., Fan, J.J., Zhang, Q.Q., Wang, G.B. & Cao, F.L. 2020 ‘Zi Dieer’ crabapple HortScience 55 272 274 https://doi.org/10.21273/HORTSCI14590-19