Relationships Between Salt Type and Seed Germination in Three Plant Species Growing in Salt Marsh Soils of Semi-Arid Mediterranean Environments

2009 ◽  
Vol 23 (2) ◽  
pp. 103-114 ◽  
Author(s):  
María José Vicente ◽  
Encarnación Conesa ◽  
José Álvarez-Rogel ◽  
José Antonio Franco ◽  
Juan José Martínez-Sánchez
Keyword(s):  
Salt Marsh ◽  
Seed Germination ◽  
Plant Species ◽  
Mediterranean Environments ◽  
Semi Arid

Tidal Management: Consequences for the Salt-Marsh Vegetation1

1984 ◽  
Vol 16 (1-2) ◽  
pp. 79-86 ◽  
Author(s):  
A M Groenendijk
Keyword(s):  
Salt Marsh ◽  
Seed Germination ◽  
Storm Surge ◽  
Plant Species ◽  
High Water ◽  
Water Levels ◽  
Complete Control ◽  
Tolerant Species ◽  
Negative Effect ◽  
The Impact

The construction of a storm-surge barrier in the mouth of the Eastern Scheldt will allow complete control of the tidal conditions in the estuary. In order to indicate the limiting conditions for tidal management for the plant species, a number (10) of the most prominent salt-marsh angiosperms were tested for their tolerance against elongated inundation times of 2, 4 and 8 days. Criteria such as: die back, regrowth, generative development and seed germination were measured. The results indicate that for the majority of salt-marsh angiosperms a prolonged inundation is not likely to cause immediate die back. Only the species from the higher reaches of the marsh are severely affected by the impact of the barrier closure at high water levels. All species involved show a decreasing immersion tolerance with increasing water temperatures, with a subsequent die back of the less tolerant species. In contrast with the vegetative parts of the species, the inflorescences suffer an overall severe negative effect from prolonged immersions. This leads to the conclusion that prolonged summer inundations have to be avoided as much as possible.

Artemisia halodendron litters have strong negative allelopathic effects on earlier successional plants during vegetation restoration in a semi-arid sandy dune region in China

2020 ◽  
Author(s):  
Zhong Du ◽  
Yongqing Luo ◽  
Zhiqiang Yan ◽  
Xueyong Zhao ◽  
Yuqiang Li ◽  
...  
Keyword(s):  
Seed Germination ◽  
Plant Species ◽  
Soil Seed Bank ◽  
Vegetation Restoration ◽  
Allelopathic Effect ◽  
Successional Species ◽  
Artemisia Halodendron ◽  
Allelopathic Effects ◽  
Arid Grasslands ◽  
Semi Arid

<p><em>Artemisia halodendron</em> Turcz. ex Besser occurs following the appearance of a pioneer species, <em>Agriophyllum squarrosum</em> (L.) Moq., and the former “killed” and replaced the latter during the naturally vegetation succession in sandy dune regions in China. A previous study revealed that the foliage litter of <em>A. halodendron</em> had strong negative allelopathic effects on germination of the soil seed bank and on the seedling growth. It is unclear whether an allelopathic effect of <em>A. halodendron</em> litters positively or negatively affects the seed germination, leading to a progressively replacement of the plant species in sandy dune regions.</p><p>We, therefore, carried out a seed germination experiment to determine the allelopathic effects of three litter types of <em>A. halodendron</em> (roots, foliage, and stems) on seed germination of six plant species that progressively occur along a successional gradient in the semi-arid grasslands of northeastern China.</p><p>In line with our expectation, we found that the early-successional species rather than the late-successional species were negatively affected by the allelopathic effects of <em>A. halodendron</em>, and that the allelopathic effects on seed germination increase with increasing concentration of litter extracts, irrespective of litter types.</p><p>Our study evidenced the negative allelopathic effects of <em>A. halodendron</em> on the species replacement and on the community composition during dune stabilization. Further studies are needed to better understand the successional process and thus to promote the vegetation restoration, as <em>A. halodendron</em> itself disappeared also during the process.</p>

scholarly journals Direct effects of nitrogen addition on seed germination of eight semi‐arid grassland species

2020 ◽  
Vol 10 (16) ◽  
pp. 8793-8800
Author(s):  
Tong Zhang ◽  
Mengzhou Liu ◽  
Xudong Huang ◽  
Wei Hu ◽  
Ning Qiao ◽  
...  
Keyword(s):  
Seed Germination ◽  
Nitrogen Addition ◽  
Direct Effects ◽  
Grassland Species ◽  
Semi Arid

scholarly journals Effects of Non-Thermal Plasma Treatment on Seed Germination and Early Growth of Leguminous Plants—A Review

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1616
Author(s):  
Božena Šerá ◽  
Vladimír Scholtz ◽  
Jana Jirešová ◽  
Josef Khun ◽  
Jaroslav Julák ◽  
...  
Keyword(s):  
Seed Germination ◽  
Plant Species ◽  
Thermal Plasma ◽  
Microbial Inactivation ◽  
Growth Stages ◽  
Agricultural Crop ◽  
Initial Growth ◽  
Total Production ◽  
Legume Seeds ◽  
Non Thermal Plasma

The legumes (Fabaceae family) are the second most important agricultural crop, both in terms of harvested area and total production. They are an important source of vegetable proteins and oils for human consumption. Non-thermal plasma (NTP) treatment is a new and effective method in surface microbial inactivation and seed stimulation useable in the agricultural and food industries. This review summarizes current information about characteristics of legume seeds and adult plants after NTP treatment in relation to the seed germination and seedling initial growth, surface microbial decontamination, seed wettability and metabolic activity in different plant growth stages. The information about 19 plant species in relation to the NTP treatment is summarized. Some important plant species as soybean (Glycine max), bean (Phaseolus vulgaris), mung bean (Vigna radiata), black gram (V. mungo), pea (Pisum sativum), lentil (Lens culinaris), peanut (Arachis hypogaea), alfalfa (Medicago sativa), and chickpea (Cicer aruetinum) are discussed. Likevise, some less common plant species i.g. blue lupine (Lupinus angustifolius), Egyptian clover (Trifolium alexandrinum), fenugreek (Trigonella foenum-graecum), and mimosa (Mimosa pudica, M. caesalpiniafolia) are mentioned too. Possible promising trends in the use of plasma as a seed pre-packaging technique, a reduction in phytotoxic diseases transmitted by seeds and the effect on reducing dormancy of hard seeds are also pointed out.

scholarly journals Terrestrial Morphotypes of Aquatic Plants Display Improved Seed Germination to Deal with Dry or Low-Rainfall Periods

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 741
Author(s):  
Rocío Fernández-Zamudio ◽  
Pablo García-Murillo ◽  
Carmen Díaz-Paniagua
Keyword(s):  
Seed Germination ◽  
Plant Species ◽  
Aquatic Plants ◽  
Aquatic Plant ◽  
Population Persistence ◽  
Temporary Ponds ◽  
Percent Germination ◽  
Plant Assemblages ◽  
Viable Seeds

In temporary ponds, seed germination largely determines how well aquatic plant assemblages recover after dry periods. Some aquatic plants have terrestrial morphotypes that can produce seeds even in dry years. Here, we performed an experiment to compare germination patterns for seeds produced by aquatic and terrestrial morphotypes of Ranunculus peltatus subsp. saniculifolius over the course of five inundation events. During the first inundation event, percent germination was higher for terrestrial morphotype seeds (36.1%) than for aquatic morphotype seeds (6.1%). Seed germination peaked for both groups during the second inundation event (terrestrial morphotype: 47%; aquatic morphotype: 34%). Even after all five events, some viable seeds had not yet germinated (terrestrial morphotype: 0.6%; aquatic morphotype: 5%). We also compared germination patterns for the two morphotypes in Callitriche brutia: the percent germination was higher for terrestrial morphotype seeds (79.5%) than for aquatic morphotype seeds (41.9%). Both aquatic plant species use two complementary strategies to ensure population persistence despite the unpredictable conditions of temporary ponds. First, plants can produce seeds with different dormancy periods that germinate during different inundation periods. Second, plants can produce terrestrial morphotypes, which generate more seeds during dry periods, allowing for re-establishment when conditions are once again favorable.

scholarly journals NATURAL PLANT SPECIES INVENTORY OF THE IMPORTANT PLANT AREAS IN ARABIAN PENINSULA: BANI OMAR, TAIZ GOVERNORATE, REPUBLIC OF YEMEN

2020 ◽  
Vol 1 (3) ◽  
pp. 135-150
Author(s):  
Abdul Wali Ahmed Al-Khulaidi ◽  
Abdul Habib Al-Qadasi ◽  
Othman Saad Saeed Al-Hawshabi
Keyword(s):  
Plant Species ◽  
Arabian Peninsula ◽  
Annual Rainfall ◽  
Vegetation Types ◽  
Salvadora Persica ◽  
Natural Plant ◽  
Vegetation Communities ◽  
Ecological Zones ◽  
Average Annual Rainfall ◽  
Semi Arid

The study area is located on the South western mountains of Republic of Yemen, It is characterized by arid and semi-arid climate with high temperatures and low average annual rainfall. The aims of this study are to explore the natural plant species of one of the Important Plant areas of Arabian Peninsula and to evaluate the chance to be a protected area. 61 sample sites covering the whole ecological zones haven been conducted. 135 plant species are found, in which 3 plant species were endemic, 7 near endemic, 29 regional endemic. The study revealed also three vegetation communities with 7 vegetation associations (vegetation types). Vegetation dominated by Ficus cordata, F. sycomorus, Salvadora persica Tamarix aphylla and Ziziphus spina-christi were found on main wadis. Vegetation communities dominated by Acacia asak, Anisotes trisulcus, Jatropha variegate and Zygocarpum yemenense were found on rocky slopes and stony plateau.

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