Effect of Stratification and Drying on the Germination and Storage of Prunus campanulata Seeds

Q4 Agricultural and Biological Sciences
C. Chien, Shun-Ying Chen, Jeng-Chuann Yang
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引用次数: 7

Abstract

Seeds of Prunus campanulata are known for their morphological and physiological dormancy which can be broken by a combination of warm and cold stratification. This treatment is usually applied after storage and before sowing. The goal of this study was to evaluate the effectiveness of dormancy-breaking treatment before storage of Prunus campanulata seeds. Two treatment procedures were proposed. The first one involved warm stratification of freshly collected seeds at 30/20℃ or 25/15℃ for 6 wk, followed by drying to 3 mo is ture contents (4.8-5.3%, 11.6-11.8% and 16.3-17.1%) and storage at -20℃ or 5℃ for 3-12 mo. Stored seeds were mixed with sphagnum and stratified at 5℃ for 8 wk before germination test. The second one involved warm stratification at 30/20℃ for 6 wk followed by cold stratification at 5℃ for 8 wk for dormancy breaking, and then drying to 2 seed moisture contents (5.2 and 16.3%) for storage at -20℃ or 5℃ for 3-12 mo. Stored seeds were tested directly for germination. Evaluation criteria used were the germination percentage and mean germination time (MGT). The result showed that seeds stored at -20℃ or 5℃ for 12 mo maintained 70% germination or above with the 2 treatment procedures. However, the first treatment procedure reduced MGT and enhanced the uniformity of germination. A possible cause for the reduced seed germination percent age during storage is discussed.
分层和干燥对钟栗种子萌发和贮藏的影响
钟叶李种子的形态和生理休眠可以通过冷暖分层的结合来打破。这种处理通常在储藏后和播种前进行。本研究的目的是评价钟叶李种子储藏前的破休眠处理的效果。提出了两种治疗方法。第一种方法是将新鲜采集的种子在30/20℃或25/15℃下温分层6周,然后干燥至3个月,其含量为4.8-5.3%,11.6-11.8%和16.3-17.1%,然后在-20℃或5℃下储存3-12个月。储存的种子与海藻混合,在5℃下分层8周,然后进行发芽试验。第2组在30/20℃下温分层6周,然后在5℃下冷分层8周,以打破休眠,然后干燥至2种子含水量(5.2和16.3%),在-20℃或5℃下储存3-12个月。评价标准为发芽率和平均发芽时间(MGT)。结果表明,在-20℃和5℃条件下贮存12个月,两种处理方式的种子萌发率均保持在70%以上。然而,第一个处理程序降低了MGT,提高了发芽均匀性。讨论了贮藏过程中种子发芽率降低的可能原因。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Taiwan Journal of Forest Science
Taiwan Journal of Forest Science Agricultural and Biological Sciences-Forestry
CiteScore
0.20
自引率
0.00%
发文量
0
期刊介绍: The Taiwan Journal of Forest Science is an academic publication that welcomes contributions from around the world. The journal covers all aspects of forest research, both basic and applied, including Forest Biology and Ecology (tree breeding, silviculture, soils, etc.), Forest Management (watershed management, forest pests and diseases, forest fire, wildlife, recreation, etc.), Biotechnology, and Wood Science. Manuscripts acceptable to the journal include (1) research papers, (2) research notes, (3) review articles, and (4) monographs. A research note differs from a research paper in its scope which is less-comprehensive, yet it contains important information. In other words, a research note offers an innovative perspective or new discovery which is worthy of early disclosure.
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