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- Title
贮藏时间对皮、裸燕麦种子萌发及细胞学结构的影响.
- Authors
姚瑞瑞; 刘欢; 赵桂琴; 王敬龙; 王绮玉; 董凯; 张然
- Abstract
This research investigated the effects of seed storage time on the germination characteristics and cell organization structure of the covered oat variety ‘Longyan No. 3’and the naked oat variety ‘Baiyan No. 2’. The changes in germination index, viability index, shoot length, root length and electrical conductivity of two different oat germplasm lines after storage for 2,4,6 and 8 years were studied. Paraffin sectioning methods and transmission electron microscopy were used to observe and compare the changes with time and varietal differences in covered and naked oat seed anatomical structure, seed embryonic cell organization and mitochondrial ultrastructure and changes with storage time. It was found that with increase in storage time, the germination index, seed viability index and vitality of both oat germplasm lines decreased, while the electrical conductivity of seeds increased. The seed viability of ‘Longyan No. 3’ was more stable than that of ‘Baiyan No. 2’. The anatomical structure of aged oat seeds changed, and the cells of the paste layer were hydrolyzed, the ultrastructure of embryo cells and mitochondria in aged oat seeds was seriously damaged. The main changes observed were that the fat bodies in seed embryo cells were degraded; The structure of mitochondria was damaged, vacuolated and disintegrated. The nucleus structure was unclear and the chromatin was concentrated, nucleoli had disappeared, and nuclear edges were wrinkled.
- Publication
Acta Prataculturae Sinica, 2024, Vol 33, Issue 2, p154
- ISSN
1004-5759
- Publication type
Article
- DOI
10.11686/cyxb2023136