文献类型： 外文期刊

作者： Li, Fangdi ¹ ; Hu, Yaping ¹ ; Jing, Wenxuan ¹ ; Wang, Yirui ¹ ; Gao, Xiaoge ¹ ; Guo, Qirong ¹ ;

作者机构： 1.Nanjing Forestry Univ, Coll Forestry & Grassland, Coll Soil & Water Conservat, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Subtrop Crops Zhejiang Prov, Key Lab Plant Innovat & Utilizat, Wenzhou 325005, Peoples R China

3.Wuwei Talent Exchange & Dev Serv Ctr, Wuwei 733099, Peoples R China

关键词： golden ginkgo; ultrastructural; photosynthetic physiology; GBS

期刊名称：HORTICULTURAE （ 影响因子：3.0； 五年影响因子：3.2 ）

ISSN：

年卷期： 2025 年 11 卷 4 期

页码：

收录情况： SCI

摘要： Ginkgo biloba has unique leaf color and high ornamental value. Here, we conducted seasonal dynamic analyses of leaf color, morphology, physiology, and biochemistry in the new variety Huangjinwanliang (HJWL), using the golden-leaf ginkgo Xiajin (XJ) as a control, and performed genotyping-by-sequencing (GBS) to explore genetic differences. The results showed that both varieties were golden-yellow leaves in spring and autumn, transitioning to green in summer. The total chlorophyll and carotenoid contents in HJWL (1.45 similar to 4.84 mg/g and 0.09 similar to 0.39 mg/g) were significantly higher than those in XJ (1.42 similar to 3.93 mg/g and 0.08 similar to 0.34 mg/g). HJWL exhibited a higher number of chloroplasts, with visible single lamellar thylakoids, whereas XJ had fewer chloroplasts. Chloroplast fluorescence and photosynthetic parameters indicated that HJWL possesses a greater capacity for light acclimatization. The total flavonoids and wax content of HJWL (16.67 +/- 0.33 mg/g and 18.22 +/- 0.15 mg/g) were significantly higher than those of XJ (14.15 +/- 0.31 mg/g and 30.19 +/- 0.18 mg/g). GBS analysis revealed distinct genome-wide molecular bases between HJWL and XJ. These findings demonstrate that HJWL's leaf color and extended ornamental period make it a valuable landscape tree species for spring and autumn, suitable for promotion as an ornamental tree.