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Special Issue "Topicalities in Forest Ecology of Seeds"

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A special issue of Forests (ISSN 1999-4907). This special issue belongs to the section "Forest Ecology and Management".

Deadline for manuscript submissions: 30 September 2023 | Viewed by 5541

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Dr. Božena Šerá

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Department of Environmental Ecology and Landscape Management, Faculty of Natural Sciences, Comenius University in Bratislava, 84215 Bratislava, Slovakia
Interests: seed biology and ecology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The gene pool of forest trees is part of the natural wealth of the environment, and is important for the future of forests in terms of the adaptability and ecological stability of forest stands. Maintaining the morphological and physiological quality of forest tree seeds is the most important condition for the possibility of successful forest reproduction. Advancing climate change, forest soil degradation and inappropriate management are weakening healthy trees, causing the forest to become less stable and vulnerable. Knowledge of reproductive material and related topics can help us to better understand how forests work in relation to ongoing climate change. This Special Issue will provide an overview of the most recent advances in the field of seed ecology and its applications in diverse areas, by providing selected contributions on advances in the seeds and fruits of forest species, their morphological and physiological characterization, and many related topics.

Potential topics include, but are not limited to:

Flowering and pollination of forest trees;
Seed and fruit quality;
Forest seed production;
Seed dispersal;
Soil seed bank;
Seed germination and early seedling growth;
Seed dormancy;
Seed and fruit predation by animals;
Perspectives in forest seed technology.

Dr. Božena Šerá
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Forests is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

seed production
seed quality
seed dispersal
seed germination
early seedling growth
soil seed bank
seed dormancy
seed predation

Published Papers (4 papers)

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Research

Open AccessArticle

Non-Thermal Plasma Treatment Improves Properties of Dormant Seeds of Black Locust (Robinia pseudoacacia L.)

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Forests 2023, 14(3), 471; https://doi.org/10.3390/f14030471 - 25 Feb 2023

Cited by 1 | Viewed by 805

Abstract

This article deals with the breaking down of seed dormancy in black locust (Robinia pseudoacacia L.) seeds. These seeds have a hard testa that is impermeable to water and air. In this investigation, seeds of black locust were treated with non-thermal plasma (NTP) for 0, 5, 10, and 20 min. The testa of the treated seeds had an eroded surface (SEM analysis) and showed an increased oxygen content (EDS) and increased hydrophilicity (contact-angle measurement). The exposed seeds also had a higher water absorption (seed water uptake) than the untreated ones. In seeds treated for 20 min, a significant difference (p < 0.05) was recorded in seed germination (eight times greater than the control set) and in other parameters of initial seedling development, such as the fresh weight of both seedling root and shoot and all three indexes of seedling vitality. The detected changes in the seed surface and changes in germination proved that NTP can partly break dormancy in black-locust seeds. Full article

(This article belongs to the Special Issue Topicalities in Forest Ecology of Seeds)

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Open AccessArticle

Type 2 Nondeep Physiological Dormancy in Seeds of Fraxinus chinensis subsp. rhynchophylla (Hance) A.E.Murray

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Forests 2022, 13(11), 1951; https://doi.org/10.3390/f13111951 - 18 Nov 2022

Viewed by 1008

Abstract

Fraxinus chinensis subsp. rhynchophylla (Oleaceae), hereafter F. rhynchophylla, is an important timber species in northeast China; however, little is known about its seed dormancy and germination, which hinders regeneration of the species from seeds for reforestation and conservation. Our aim was to determine the class of seed dormancy and how to break it. Studies were conducted to determine the permeability of the seed coat to water, changes in embryo development during cold stratification and effects of cold stratification on germination over a range of temperatures. The seeds were water-permeable, and the embryo was fully developed and filled the embryonic cavity. Cold stratification at 5 °C for 8 weeks was effective in breaking dormancy; thus, we conclude that the seeds have nondeep physiological dormancy (PD). As cold stratification time was increased, the ability of seeds to germinate at low temperatures (e.g., 10 °C and 15 °C) increased, indicating the presence of Type 2 nondeep PD, in which the minimum temperature for germination decreases during dormancy-break. Nondormant seeds germinated to high percentages and rates at constant temperatures of 25 °C (germination percentage was 63%) and at alternating temperature regimes of 35 °C/25 °C, 30 °C/15 °C, 25 °C/20 °C and 20 °C/10 °C (germination percentage was 66%, 67%, 65% and 66%, respectively). To produce seedlings, we recommend 8 weeks of cold stratification at 5 °C before sowing the seeds at temperatures ranging from 15 °C to 30 °C. Full article

(This article belongs to the Special Issue Topicalities in Forest Ecology of Seeds)

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Open AccessArticle

Auxiliary Seed Treatment Is Necessary to Increase Recruitment of a Critically Endangered Species, Abies beshanzuensis (Pinaceae)

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Forests 2022, 13(6), 961; https://doi.org/10.3390/f13060961 - 19 Jun 2022

Cited by 3 | Viewed by 1471

Abstract

Disordered germination is widely observed in plant species with extremely small populations (PSESPs) in China. Abies beshanzuensis M. H. Wu, a PSESP (with only three extant adults in Zhejiang Province, China) that also has poor seed germination in the field, belongs to the Pinaceae family. Pinaceae generally tend toward symbiosis with ectomycorrhizal (ECM) fungi to alleviate climate change-induced stresses. Therefore, exploring how to improve seed germination of A. beshanzuensis and whether it is an ECM species will contribute to increasing recruitment for conducting further conservation research. In this study, four temperature regimes (10/15 °C, 15/20 °C, 20/25 °C, and 25/30 °C) were selected to explore the response of seed germination to rising temperature. Based on the microscopic features of fine roots, together with molecular techniques, the mycorrhizal type of this species was identified. The seed germination of A. beshanzuensis was increased from 1–2% to around 4.5% by 14-day cold stratification and under 20/25 °C fluctuating temperature conditions. Our findings indicated that A. beshanzuensis may be endangered as a result of insufficient seedling recruitment due to poor germination under the current climate. A. beshanzuensis was confirmed as an ECM fungi-associated tree species. This study highlights the necessity of incorporating auxiliary seed treatment into population recovery programs of A. beshanzuensis, thereby better conserving the species under ongoing environmental changes. Full article

(This article belongs to the Special Issue Topicalities in Forest Ecology of Seeds)

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Open AccessArticle

Does the Age of Pinus sylvestris Mother Trees Influence Reproductive Capacity and Offspring Seedling Survival?

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Forests 2022, 13(6), 937; https://doi.org/10.3390/f13060937 - 15 Jun 2022

Cited by 2 | Viewed by 1470

Abstract

We assess how the age of Pinus sylvestris mother trees influences seed size, seed viability, germination capacity and later offspring seedling survival under greenhouse conditions. Thirty trees ranging from 30 to 219 years old were selected in the north facing slopes in the Sierra de Guadarrama, where we could find the oldest Pinus sylvestris trees in central Spain. Forty cones per tree were harvested to study cone and seed characteristics (size and weight), seed viability and germination capacity related to the mother tree age. In addition, 25 germinated seeds per tree were grown in a greenhouse to assess offspring seedling survival during a death trial, where watering was stopped. Significant differences between trees in cone and seed morphological traits were observed. The age of the mother tree had a significant effect on cone size, seed size, and seed weight, but there was no effect on seed germination capacity and seed viability. Seedling survival was mainly affected by the decrease in water availability. However, a significant effect of the tree age was found once soil moisture had reached 0%. Our results show the ability of overmature Pinus sylvestris trees to maintain a relatively high reproductive capacity that assures its persistence. Full article

(This article belongs to the Special Issue Topicalities in Forest Ecology of Seeds)

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