scholarly journals RESPON PERKECAMBAHAN BENIH SENGON LAUT (Paraserianthes falcataria (L.) Nielsen) TERHADAP ALELOPATI DAUN DAN RHIZOME ALANG-ALANG (Imperata cylindrica L.)

EUGENIA ◽  
2017 ◽  
Vol 23 (1) ◽  
Author(s):  
Euis F.S. Pangemanan ◽  
Semuel P. Ratag
Keyword(s):  
Experimental Design ◽  
Seed Germination ◽  
Plant Species ◽  
Tree Species ◽  
Agroforestry System ◽  
Forest Area ◽  
Imperata Cylindrica ◽  
Paraserianthes Falcataria ◽  
Toxic Compound ◽  
Extract Concentration

ABSTRACT   A plant species can release a toxic compound which can inhibit the growthof other plant species.  The success of planting certain tree species, both inside and outside the forest area with agroforestry system can be affected by allelopathy of other plant species. The objective of this research was to study the response of sengon laut (Paraserianthes falcataria (L.) Nielsen) seed germination on cogongrass (Imperata cylindrica L.) leaves and rhizomes allelopathy. The experimental design was a randomized complete design with four replicates.  The treatments were leaves and rhizomes extracts of cogongrass, and water as control.  The results showed that the extract concentration of 20 % (weight/volume), then the sengon laut seed germination was not affected by the extracts. Keywords:  sengon laut, cogongrass, allelopathy, seed germination

scholarly journals Plântulas de espécies arbóreas na floresta ciliar do rio Mogi Guaçu, Pirassununga, SP, Brasil

Hoehnea ◽  
2021 ◽  
Vol 48 ◽  
Author(s):  
Israel Henrique Buttner Queiroz ◽  
Ricardo Augusto Gorne Viani ◽  
Renata Sebastiani
Keyword(s):  
River Basin ◽  
Plant Species ◽  
Tree Species ◽  
Riparian Forest ◽  
The State ◽  
Forest Area ◽  
Forest Community ◽  
Adult Individual ◽  
Morphological Aspects ◽  
Forest Remnant

RESUMO The permanence of a plant species in a forest community depends on its number of specimens and its distribution in the various sizes of individuals, including seedlings. Seedlings and seeds from a forest remnant in Pirassununga were collected and analyzed for the degree of threat, possible height of the adult individual, occurrence in phytophysiognomies and region and morphological aspects. 116 seedlings available in 39 morphospecies were collected, and the germination of collected seeds provided 40 species. The present study brought news regarding the morphological aspects, the identification and the distribution of seedlings of tree species in a riparian forest area in the Mogi Guaçu River Basin and in the State of São Paulo.

scholarly journals Removal and predation of aril-covered seeds: the case of Afzelia bipindensis (Fabaceae – Detarioidae)

2019 ◽  
Vol 152 (3) ◽  
pp. 460-469 ◽  
Author(s):  
Quentin Evrard ◽  
Olivier J. Hardy ◽  
Nikki Tagg ◽  
Jean-Louis Doucet
Keyword(s):  
Seed Germination ◽  
Plant Species ◽  
Tree Species ◽  
Feeding Behaviour ◽  
Camera Traps ◽  
Regeneration Process ◽  
Timber Species ◽  
Direct Observations

Background and aims – Most tree species with aril-covered seeds are assumed to be dispersed by frugivores. However, the number of studied African rainforest plant species remains low. This study focused on Afzelia bipindensis, an important timber species, which produces seeds partly covered by an aril. Specifically, this study aimed to: (1) identify the dispersers and the predators of A. bipindensis seeds, (2) characterize the role of those dispersers and predators in the regeneration process, and (3) understand the role of the aril in seed germination in relation to the feeding behaviour of the identified dispersers. Methods – The study took place in a Gabonese evergreen rainforest in 2015 and in a Cameroonian semi-deciduous rainforest in 2016 and 2017. We conducted more than 100 hours of direct observations, and used camera traps to monitor animal activities for 3000 hours within the canopy and 10 000 hours on the ground under fruiting trees. Key results – Three rodent taxa (Cricetomys emini, Funisciurus isabella and an undetermined species of Muridae) were mainly observed interacting with the seeds but neither birds nor monkeys were observed. Rodents removed more than 90% of the seeds, after detaching the aril, to probably cache them in burrows or superficial caches. Seeds from which we manually removed the aril (mimicking rodent behaviour) had a higher germination rate.Conclusions – Rodents may play a more important role than expected in the dynamics of tree species producing aril-covered seeds.

scholarly journals CARACTERIZAÇÃO DA VEGETAÇÃO PIONEIRA DE UMA ÁREA DE EXPLORAÇÃO DE MIMOSA SCABRELLA BENTH. (BRACATINGA), NO MUNICÍPIO DE COLOMBO, PR

FLORESTA ◽  
2001 ◽  
Vol 31 (12) ◽  
Author(s):  
Leocádio Grodzki ◽  
Maria Regina Torres Boeger
Keyword(s):  
Plant Species ◽  
Tree Species ◽  
Agroforestry System ◽  
Herbaceous Species ◽  
Pioneer Vegetation ◽  
The One

Com o objetivo de melhor entender a dinâmica sucessional dos bracatingais, realizou-se um levantamento florístico e fitossociológico das espécies instaladas após 60 dias do corte raso da bracatinga (Mimosa scabrella Benth.). O local de estudo é uma área no município de Colombo, PR., de sistema agrosilvicultural (bracatinga+milho, feijão e abóbora), circundada por bracatingais de diversas idades, cultivo e pastagens. Foram delimitadas 30 parcelas de 1 m², para a avaliação florística e fitossociológica, utillizando-se o método de Braun-Blanquet. Avaliou-se a freqüência e cobertura relativas. Foram identificadas 32 espécies sendo 13 herbáceas e 19 arbustivas e/ou arbóreas. As espécies herbáceas mais freqüentes e de maior valor de cobertura foram: Panicum sabulorum, Cyperus hermaphroditus e Imperata brasiliensis, enquanto que entre as arbóreas e/ou arbustivas foram: Leandra australis e Palicourea sp.. Detectou-se, também, a presença de várias rebrotas de espécies arbóreas, mostrando que, mesmo após vários ciclos de exploração agrosilvicultural, ainda ocorre regeneração de muitas espécies da floresta original. Characterization of the pioneer vegetation on the bracatinga (MIMOSA SSCABRELLA Benth.) agroforestry system in the Colombo municipality , PR Abstract To better understand the successional dynamics of "bracatinga" forests, a floristical and fitossociological survey was performed after 60 days after the cutting of the bracatinga (Mimosa scabrella Benth.) in an agroforestry system area (bracatinga + corn, beans and pumpkin), in the municipality of Colombo, PR. Thirty plots of 1 m² were delimited, using the method of Braun-Blanket. Frequency and relative covering were defined for each plant species. Thirty-two species (13 herbaceous and 19 tree species) were detected. The herbaceous species with most frequent and larger value of coverage are: Panicum sabulorum, Cyperus hermaphroditus and Imperata brasiliensis. Among the tree species, the one with greater values are: Leandra australis and Palicourea sp. Sprouting was frequent for several tree species, sugesting that, even after several cycles of explotation, regeneration of many species of the original forest still occurs.

Do vegetal communities dominated by invasive exotic plant species affect the structure of bird communities in an Atlantic Forest area?

2020 ◽  
Vol 28 (4) ◽  
pp. 241-249
Author(s):  
Cleverton da Silva ◽  
Arleu Barbosa Viana-Junior ◽  
Cristiano Schetini de Azevedo ◽  
Juliano Ricardo Fabricante
Keyword(s):  
Plant Species ◽  
Atlantic Forest ◽  
Bird Communities ◽  
Forest Area ◽  
Exotic Plant ◽  
Exotic Plant Species ◽  
Invasive Exotic

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 Seed germination and seedling development in response to submergence in tree species of the Central Amazonian floodplains

AoB Plants ◽  
2015 ◽  
Vol 7 ◽  
Author(s):  
Risolandia Bezerra de Melo ◽  
Augusto César Franco ◽  
Clovis Oliveira Silva ◽  
Maria Teresa Fernandez Piedade ◽  
Cristiane Silva Ferreira
Keyword(s):  
Seed Germination ◽  
Tree Species ◽  
Seedling Development

scholarly journals Determination of the Effect of Drought Stress on the Seed Germination in Some Plant Species

10.5772/63197 ◽  
2016 ◽  
Author(s):  
Nurcan Yigit ◽  
Hakan Sevik ◽  
Mehmet Cetin ◽  
Nur Kaya
Keyword(s):  
Drought Stress ◽  
Seed Germination ◽  
Plant Species
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