文献类型：期刊文献

英文题名：Differences and Correlations of Morphological Characteristics and Fatty Acid Profiles of Seeds of Toona sinensis

作者：Su, Shang[1] Wang, Li-Jin[2] Ni, Jian-Wei[1] Geng, Yong-Hang[1] Xu, Xin-Qiao[1]

第一作者：苏上

通信作者：Wang, LJ[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Forestry Adm, Key Lab Tree Breeding & Cultivat, Beijing 100091, Peoples R China;[2]Beijing Technol & Business Univ, Coll Food & Chem Engn, Lab Mol Sensory Sci, Beijing 100048, Peoples R China

年份：2020

卷号：17

期号：11

外文期刊名：CHEMISTRY & BIODIVERSITY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000582522000001)】；

基金：This study was supported by the National Natural Science Foundation of China (grant No. 31700603) and the Southeast Guizhou Forestry Research Funds (grant No. C078).

语种：英文

外文关键词：Toona sinensis; seed size; fatty acid; GC; MS; α -linolenic acid

摘要：Toona sinensis (A.Juss.) M.Roem., a multi-purpose tree of Meliaceae, is widely distributed and intensively cultivated in Asia, yet its high yielding, lipid-rich seeds are rarely exploited. The present study systematically analyzed the differences and correlations of seed morphological characteristics and fatty acid (FA) profiles of 62 representative T. sinensis germplasms distributed across northern to southern China. T. sinensis seeds were rich in total FAs (TFA, 107.03-176.18 mg/g). Additionally, linoleic acid (54.69-100.59 mg/g), alpha-linolenic acid (ALA, 22.47-45.02 mg/g), oleic acid (OA, 5.12-23.94 mg/g), palmitic acid (6.87-14.14 mg/g), stearic acid (SA, 3.13-6.57 mg/g) and elaidic acid (1.70-2.88 mg/g) were the major FAs measured by GC/MS analysis. Size (average width of 3.94 +/- 0.01 mm and length of 5.79 +/- 0.02 mm) and mass (average thousand-seed weight of 10.52 +/- 0.17 g) were greater in T. sinensis seeds collected south than north of 30 degrees latitude. These traits were also positively correlated with unsaturated FA content and negatively related to SA and saturated FA contents (P0.05). Significant positive correlations were found between seed length and polyunsaturated FA (R-2=0.370) and ALA levels (R-2=0.296), as well as between thousand-seed weight and monounsaturated FAs (R-2=0.309) and OA levels (R-2=0.297) (P0.05). Seventeen T. sinensis germplasms gathered by cluster analysis as cluster IV were determined as desirable for oil processing due to their higher TFA and ALA contents and greater seed size and mass than others. Generally, the wider, heavier, and especially longer seeds of T. sinensis contain much higher levels of FAs, especially ALA, and are the more promising sources for breeding and the oil processing industry.