文献类型：期刊文献

英文题名：Characteristics of Growth, Photosynthesis, C/N Ratio, and Antioxidant Capacity in the Seedling Stage of Aquilaria sinensis 'Qinan'

作者：Zhang, Qilei[1,2] Ma, Ning[1,3] Su, Yu[4,5] Liu, Xiaojin[1,2]

第一作者：张启雷;Zhang, Qilei

通信作者：Liu, XJ[1];Liu, XJ[2];Su, Y[3];Su, Y[4]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China;[2]State Key Lab Efficient Prod Forest Resources, Beijing 100091, Peoples R China;[3]Nanjing Forestry Univ, Coll Landscape Architecture, Nanjing 210037, Peoples R China;[4]Guangzhou Inst Forestry & Landscape Architecture, Guangzhou 510080, Peoples R China;[5]Guangzhou Collaborat Innovat Ctr Sci Tech Ecol & L, Guangzhou 510405, Peoples R China

年份：2025

卷号：14

期号：6

外文期刊名：PLANTS-BASEL

收录：;Scopus(收录号：2-s2.0-105001420108);WOS:【SCI-EXPANDED(收录号:WOS:001452069700001)】；

基金：This study was supported by the Fundamental Research Funds for the Central Non-profit Research Institution of Chinese Academy of Forestry (CAFYBB2022SY018); Guangzhou Basic and Applied Basic Research Foundation (2024A04J0121); Fundamental Research Funds for the Central Non-profit Research Institution of Chinese Academy of Forestry (CAFYBB2023MB008); Guangdong Basic and Applied Basic Research foundation (2024A1515011221); National Forest Technological Achievement Promotion Project (No. 2020133130); and the Guangzhou Collaborative Innovate on Center on Science-tech of Ecology and Landscape (202206010058).

语种：英文

外文关键词：antioxidant; Aquilaria sinensis; C/N ratio; leaf area; photosynthesis

摘要：In this study, Aquilaria sinensis 'Qinan', a strain of A. sinensis that easily forms agarwood, was selected and propagated by grafting seedlings. Existing research has mainly focused on the characteristics of agarwood formation, but little attention has been paid to the growth characteristics of A. sinensis 'Qinan'. In this study, the growth rate, photosynthetic capacity, leaf size, carbon and nitrogen contents, and antioxidant capacity were evaluated during the early growth stage in A. sinensis 'Qinan' and A. sinensis grafted seedlings. Compared with A. sinensis, A. sinensis 'Qinan' exhibited higher net photosynthetic rate (9.2 mu mol m-2 s-1 in A. sinensis 'Qinan' and 7.8 mu mol m-2 s-1 in A. sinensis) in the mature leaf. There were higher contents of secondary metabolites such as flavonoids and phenols, with stronger antioxidant capacity in A. sinensis 'Qinan'. Larger leaf area (43.9 cm2 in A. sinensis and 30.1 cm2 in A. sinensis 'Qinan'), higher nitrogen content (24.9 mg kg-1 in A. sinensis and 23.7 mg kg-1 in A. sinensis 'Qinan') in young leaves, faster growth rate, and larger biomass were observed in A. sinensis. The results indicate that differences exist in nutrient distribution during the growth process of A. sinensis 'Qinan' and A. sinensis, with more substances being used to synthesize defensive secondary metabolites in A. sinensis 'Qinan'.