Diversity of Treatments in Overcoming Morphophysiological Dormancy of Paeonia peregrina Mill. Seeds

文献类型： 外文期刊

第一作者： Prijic, Zeljana

作者： Prijic, Zeljana;Mikic, Sara;Dragumilo, Ana;Filipovic, Vladimir;Markovic, Tatjana;Peskanov, Jovan;Anackov, Goran;Zhang, Xiuxin;Guo, Lili

作者机构：

关键词： herbaceous peony; protected species; germination stages; seed coat rupture; epicotyl dormancy release; hypocotyl dormancy release; imbibition; GA(3); nursery plant production

期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）

ISSN： 2223-7747

年卷期： 2024 年 13 卷 16 期

页码：

收录情况： SCI

摘要： Paeonia peregrina Mill. is a protected, herbaceous species native to Southeastern Europe and Turkey. Due to its vulnerability, it has to be protected both in its natural habitats and through cultivation. Peonies are known to have a low potential for natural regeneration due to their seed dormancy, low germination rate, and long germination period. In this study, treatments with gibberellic acid (GA(3) 150, 200, 250, 300, and 350 mg L-1 GA3) and warm (at 20/16 degrees C day/night regime) and cold stratification (at 4 degrees C) were used to accelerate dormancy release and increase the germination rate. The seeds of P. peregrina from four natural habitats in Serbia and the Institute's collection were collected and analyzed. They showed an underdeveloped embryo that needs to grow inside the seed before it can germinate. The application of GA(3) accelerated each stage of germination (seed coat rapturing, hypocotyl dormancy release, and epicotyl dormancy release) for approximately 10 days compared to the control. It was also found that two-day imbibition with 200 mg L-1 GA(3) significantly accelerated and equalized germination. Higher GA(3) concentrations had a more pronounced impact on each stage but also resulted in greater seed infection after the seed coat rupture, elongated and weak seedlings, while lower concentrations did not result in obtaining uniform seedlings. There were no significant differences observed between localities. Restoring P. peregrina through seeds and nursery-produced plants is crucial for conserving the genetic diversity of the tested species.

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