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- Title
沙芦草种子发芽抑制物的初步探究.
- Authors
于金田; 王晶; 伏兵哲; 高雪芹
- Abstract
Agropyron mongolicum, commonly known as Mongolian wheatgrass, is one of the main plants in desert steppe and typical steppe vegetation in sandy land. It has excellent characteristics of resistance to drought, cold, disease, salt, and alkali. However, the seeds of A. mongolicum retain some wild characteristics such as a low germination rate and a long duration of germination. This affects the artificial seed reproduction, production, and utilization of A. mongolicum. To explore the dormancy mechanism of A. mongolicum seeds, the seed husks were extracted with five different solvents (petroleum ether, ether, ethyl acetate, methanol, acetone, and pure water) and the inhibitory effects of the extracts on seed germination of Brassica pekinensis (cabbage) were evaluated. In addition, gas chromatography-mass spectrometry (GC-MS) analyses were conducted to determine the types of compounds in the extracts. The five extracts from the husks of A. mongolicum seeds inhibited the germination rate, root length, and seedling height of cabbage to different degrees. Among the five types of extracts, the water extract had the strongest inhibitory effect, followed by the ethyl acetate extract and then the methanol extract. In the GC-MS analyses, 32 kinds of organic substances in nine classes (alkanes, alcohols, esters, ketones, benzenes, amides, acetals, acids, and phenols) were detected in the extracts of A. mongolicum. Most of those substances were water soluble, and the most abundant substances were alcohols, ketones and alkanes. Therefore, one of the main reasons for the dormancy of A. mongolicum seeds is the presence of inhibitors such as alcohols, ketones, and alkanes in the husks. The results of this study will be useful for developing methods to break the dormancy of A. mongolicum seeds.
- Publication
Acta Prataculturae Sinica, 2022, Vol 31, Issue 5, p92
- ISSN
1004-5759
- Publication type
Academic Journal
- DOI
10.11686/cyxb2021141