Classification of dormancy types and breakout conditions in Reynoutria sachalinensis exhibiting seed dormancy polymorphism

IF 2.4 3区 农林科学 Q1 Agricultural and Biological Sciences
Yu-Jin Kim, Kyungtae Park, Bo-Kook Jang, Sung Pil Kwon, Ju-Sung Cho
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Abstract

Reynoutria sachalinensis is an herbaceous plant that has gained attention as a promising functional ingredient in bio-health. However, information on the propagation of this plant remains limited, and information on the germination and dormancy characteristics of R. sachalinensis seeds native to Korea is yet to be established. This study aimed to determine the optimal method for breaking dormancy by classifying the dormancy types in R. sachalinensis seeds collected from Ulleungdo. Initial observations revealed that R. sachalinensis seeds exhibited water permeability and fully developed embryos. However, further investigation into seed dormancy was warranted due to the low germination percentage of less than 20%. To address this dormancy, a cold stratification treatment lasting four weeks was employed, which confirmed the presence of physiological dormancy (PD) in R. sachalinensis seeds. Additionally, prolonged after-ripening, without any special treatment, led to the loss of dormancy. Both treatments demonstrated that the dormancy of R. sachalinensis seeds could be overcome by alternative methods for non-germinated seeds. Accordingly, scarification was used to treat seeds whose dormancy was broken by after-ripening, and all viable seeds germinated. Therefore, it is assumed that R. sachalinensis seeds have two types of PD—non-deep and intermediate, exhibiting polymorphism as an adaptive strategy to thrive in challenging environments. Through this study, the scope of industrial use can be expanded based on stable and uniform seedling production by establishing conditions that efficiently break dormancy in R. sachalinensisseeds that exhibit polymorphism.

Abstract Image

表现出种子休眠多态性的 Reynoutria sachalinensis 的休眠类型分类和破土条件
Reynoutria sachalinensis 是一种草本植物,作为一种很有前景的生物保健功能成分而备受关注。然而,有关该植物繁殖的信息仍然有限,有关原产于韩国的 R. sachalinensis 种子的发芽和休眠特性的信息也尚未建立。本研究旨在通过对郁陵岛采集的 R. sachalinensis 种子的休眠类型进行分类,确定打破休眠的最佳方法。初步观察表明,R. sachalinensis 种子具有透水性和发育完全的胚。然而,由于发芽率低于 20%,因此有必要对种子休眠进行进一步研究。为了解决种子休眠问题,研究人员采用了为期四周的低温冷藏处理,结果证实 R. sachalinensis 种子存在生理休眠(PD)。此外,在没有任何特殊处理的情况下,延长后熟时间也会导致休眠消失。这两种处理方法都表明,对于未发芽的 R. sachalinensis 种子,可采用其他方法克服休眠。因此,用去痕法处理因后熟而打破休眠的种子,所有有活力的种子都发芽了。因此,可以推测 R. sachalinensis 种子具有两种类型的 PD--非深度和中间型,表现出多态性,是在挑战性环境中茁壮成长的一种适应策略。通过这项研究,可以在稳定和均匀育苗的基础上扩大工业应用范围,建立有效打破 R. sachalinensis 种子休眠的条件,使其表现出多态性。
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来源期刊
Horticulture Environment and Biotechnology
Horticulture Environment and Biotechnology Agricultural and Biological Sciences-Horticulture
CiteScore
4.30
自引率
4.20%
发文量
0
审稿时长
6 months
期刊介绍: Horticulture, Environment, and Biotechnology (HEB) is the official journal of the Korean Society for Horticultural Science, was launched in 1965 as the "Journal of Korean Society for Horticultural Science". HEB is an international journal, published in English, bimonthly on the last day of even number months, and indexed in Biosys Preview, SCIE, and CABI. The journal is devoted for the publication of original research papers and review articles related to vegetables, fruits, ornamental and herbal plants, and covers all aspects of physiology, molecular biology, biotechnology, protected cultivation, postharvest technology, and research in plants related to environment.
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