scholarly journals ANALISIS DAYA HIDUP DAN PERTUMBUHAN BENIH BIJI MARGA Shorea ROXB. EX C.F.GAERTN. DI PERSEMAIAN

2020 ◽  
Vol 14 (2) ◽  
pp. 1-12
Author(s):  
Nurul Ihsan Fawzi
Keyword(s):  
Native Species ◽  
Forest Restoration ◽  
Germination Rate ◽  
Primary Forest ◽  
Forest Loss ◽  
Restoration Project ◽  
Result Show ◽  
Shorea Leprosula ◽  
Germination And Growth

Deforestation in Kalimantan island made 17 million hectares of primary forest loss in the last 40 years. The forest restoration project needs native species seedlings from the previous tree on the damaged forest. The aim of this study to determine the germination and growth of the types of Shorea obtained from TNGP. This study used 38,728 seeds from four species of the Shorea genus: red meranti (Shorea leprosula), Tengkawang (Shorea macrophylla), white meranti (Shorea agami), and belabak (Shorea quadrinervis) obtained from forests near reforestation sites. The result show the average germination rate is 80%. The highest germination rate from the Shorea quadrinervis was 98.7%. We found that the growth of the Shorea genus from seeds was ready for planting in a period of 4 - 5 months.

scholarly journals Vegetation regeneration on natural terrain landslides in Hong Kong: direct seeding of native species as a restoration tool

2022 ◽  
Author(s):  
Ying Ki Law ◽  
Calvin Lee ◽  
Chun Chiu Pang ◽  
Billy Hau ◽  
Jin Wu
Keyword(s):  
Hong Kong ◽  
Seed Germination ◽  
Native Species ◽  
Forest Restoration ◽  
Germination Rate ◽  
Direct Seeding ◽  
Species Selection ◽  
Seed Coating ◽  
Pioneer Species ◽  
Coating Formulation

Landslides are common in tropical and subtropical regions with hilly terrains and heavy rainstorms, which cause significant economic, ecological, and social impacts. Natural forest succession is usually slow on landslide scars due to poor soil structure and the lack of seeds of woody plant seeds, and often comes with a higher risk of repeated landslide. Ecological forest restoration has recently been suggested as an effective alternative to restore the exposed landslide scars, however, a comprehensive study to identify effective landslide restoration strategies remains lacking, particularly associated with seed treatment methods and species selection. Here we evaluated the effectiveness of different seed coating treatments of both pioneer and later successional tree species of different seed sizes on seed germination in a one-year study on three landslides in Hong Kong. Our results show that bare seeds had germination rates of 17 to 67% across all selected species (n=7). Biochar-dominant seed coating formulation boosted an additional 9.33 (SE= 0.04) in seed germination rate, while the clay-dominant seed coating formulation did not show significant effect on germination. Our results also show that medium and large-seeded non-pioneer species have significantly higher germination rates than pioneer species. These results collectively suggest that direct seeding using a biochar seed coat is a manageable and useful method to enhance tree seed germination—an essential first step to restore the forests after landslide disturbances in Hong Kong, with potential to be extended to other humid tropical and subtropical forests.

scholarly journals Contribution to study of Acacia tortilis subsp raddiana seed germination, and growth seedling under different osmotic and drought constraints

2013 ◽  
Vol 70 (1) ◽  
pp. 227-234
Author(s):  
Salima KEBBAS ◽  
Stanley LUTTS ◽  
Fatiha AID
Keyword(s):  
Rural Economy ◽  
Germination Rate ◽  
Calorific Value ◽  
Stress Effect ◽  
Acacia Tortilis ◽  
Stem Height ◽  
Strong Negative Correlation ◽  
Kitchen Utensil ◽  
Craft Industry ◽  
Germination And Growth

Acacia raddiana or Acacia tortilis (Forsk) Hyane subsp. raddiana (Savi) Bernan, (Fabaceae) is characterized by a great ecological plasticity. It is largely used by the local populations as medicinal plants, fodder, wood energy, coal because it high calorific value. This plant thus plays a big role in rural economy because it is also appreciated in craft industry and for the clothes, tools and kitchen utensil manufacture. The study of the intensity osmotic stress effect on the germination of Acacia raddiana seeds reveals that there is a very strong negative correlation between the increase of the concentration of PEG and the germination rate (r = -0.9251). The fact remains that in spite of very small negative potential, Acacia raddiana seeds are very resistant since it coming to sprout at potential matching -6.0 MPa. In otherwise, the foliar  RWC of seedling remained stable during the 25 days of treatment at about 81.61 ± 7.61% (control) and dropped from 17th to 25th day at 32% (stressed). The growth was also affected by stress. Thus, both leaves number and stem height is reduced in stressed plants compared to controls.

scholarly journals Renewable organic waste as substrate conditioning for the production of Euterpe oleracea seedlings

2021 ◽  
Vol 10 (17) ◽  
pp. e76101724345
Author(s):  
Amanda da Silva Reis ◽  
Nayara Martins Alencar ◽  
João Batista Fernandes da Cruz ◽  
Maria Luara Aragão Silva ◽  
Flavia Barreira Gonçalves ◽  
...  
Keyword(s):  
Rice Husk ◽  
Native Species ◽  
Forest Restoration ◽  
Quality Index ◽  
Dry Matter ◽  
Seedling Quality ◽  
Euterpe Oleracea ◽  
Renewable Materials ◽  
Randomized Design ◽  
Absolute Growth

Forest restoration has the premise of restoring degraded native vegetation to conditions prior to degradation. The objective of this work was to evaluate the production of seedlings of a native species from the Amazon biome (Euterpe oleracea) under different substrates. The experiment was carried out at the Federal University of Tocantins, using a completely randomized design, and a 5x 4 factorial scheme, with five substrates (babassu stem + soil, babassu stem + rice husk + soil, coconut fiber + soil, babassu stem + fiber coconut + rice husk + soil, commercial substrate + soil - control), four trial periods (50, 100, 150 and 200 days). The evaluated variables: plant height, stem diameter, shoot dry matter, root dry matter, total dry matter, seedling quality index, leaf area and absolute growth rate. The growth of assai seedlings was influenced by the different substrates, until the 150 days after transplanting the quality and development of the seedlings were the same, both for the treatments that used commercial substrate and for the treatments that used renewable materials in their composition. The treatment using babassu stem (T1) obtained better shoot dry matter, total dry matter and seedling quality index values, in addition to being a material found in abundance in the regions, making this treatment the most viable and recommended for the production of assai seedlings.

Forest restoration project management: evaluation criteria and measurements

2020 ◽  
Vol 20 (2020) ◽  
pp. 513-514
Author(s):  
Fernando Matsuno Ramos ◽  
Mariana Bensberg Alves Guedes ◽  
Rodrigo De Almeida ◽  
Marcelo Leoni Schmid ◽  
Natalie Mendes Araújo ◽  
...  
Keyword(s):  
Project Management ◽  
Forest Restoration ◽  
Evaluation Criteria ◽  
Restoration Project ◽  
Management Evaluation

scholarly journals AVALIAÇÃO DA DIVERSIDADE DE ESPÉCIES NATIVAS PRODUZIDAS NOS VIVEIROS FLORESTAIS DO ESTADO DO RIO DE JANEIRO

FLORESTA ◽  
2014 ◽  
Vol 44 (3) ◽  
pp. 369 ◽  
Author(s):  
Jorge Makhlouta Alonso ◽  
Paulo Sérgio Dos Santos Leles ◽  
Telmo Borges Silveira Filho ◽  
Carlos Alberto Bernardo Mesquita ◽  
Marcos Lima Pereira ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Rio De Janeiro ◽  
Native Species ◽  
Forest Restoration ◽  
The State ◽  
Forest Species ◽  
Mata Atlântica ◽  
Production Manager ◽  
Mata Atlantica ◽  
Forest Nurseries

O objetivo deste trabalho foi avaliar a diversidade de espécies florestais nativas produzidas nos viveiros do estado do Rio de Janeiro. O levantamento e diagnóstico foram realizados durante os meses de fevereiro, março e abril de 2010, sendo incluídos os viveiros que produziam mudas de espécies florestais da Mata Atlântica. O trabalho de campo consistiu em visitas a 70 viveiros florestais, nos quais foi requerida a lista das espécies produzidas e realizada entrevista com o responsável, sendo preenchido um questionário englobando diversos temas relacionados à produção de mudas. Foram observadas 277 espécies florestais nativas da Mata Atlântica sendo produzidas nos viveiros, que, em média, trabalham com 56 espécies nativas. A diversidade total de espécies florestais da Mata Atlântica produzidas nos viveiros do Estado do Rio de Janeiro é baixa, assim como a diversidade média, já que mais da metade dos viveiros trabalha com uma listagem de 50 ou menos espécies, número insuficiente considerando a diversidade de espécies florestais presentes nas diferentes formações vegetais do estado.Palavras-chave: Mudas florestais; restauração florestal; Mata Atlântica. AbstractAssessment of diversity of native species produced in forest nurseries of Rio de Janeiro State. The objective of this paper was to evaluate the diversity of native species produced by nurseries in the State of Rio de Janeiro. The diagnostic and survey were conducted during the months of February, March and April of the year 2010, the research included all nurseries that produced seedlings of Atlantic Forest species. The fieldwork consisted of visits to the 70 surveyed nurseries, in which a list of the species produced in the nursery was requested and the seedling production manager was interviewed, filling in a questionnaire covering various topics related to seedlings production. We observed 277 forest species native from the Atlantic Forest produced in the nurseries. In average, the nurseries produce 56 different native species. The total diversity of native species produced in the State of Rio de Janeiro is low, as well as the mean diversity, since more than half of the nurseries work with a list of 50 or fewer species, what is insufficient considering the diversity of forest species that occur in the different vegetation types of the state.Keywords: Forest seedlings; forest restoration; Atlantic Forest.

scholarly journals Inducing salt tolerance in sweet corn by magnetic priming

2017 ◽  
Vol 109 (1) ◽  
pp. 89 ◽  
Author(s):  
Soheil Karimi ◽  
Saeid ESHGHI ◽  
Saeid KARIMI ◽  
Saman HASAN-NEZHADIAN
Keyword(s):  
Salt Stress ◽  
Seed Germination ◽  
Plant Growth ◽  
Sweet Corn ◽  
Germination Rate ◽  
Nacl Stress ◽  
Proline Accumulation ◽  
Membrane Thermostability ◽  
Germination And Growth ◽  
Magnetic Priming

<p>This study evaluates seed germination and growth of sweet corn under NaCl stress (0, 50, and 100 mM), after exposing the seeds to weak (15 mT) or strong (150 mT) magnetic fields (MF) for different durations (0, 6, 12, and 24 hours). Salinity reduced seed germination and plant growth. MF treatments enhanced rate and percentage of germination and improved plant growth, regardless of salinity. Higher germination rate was obtained by the stronger MF, however, the seedling were more vigorous after priming with 15 mT MF. Proline accumulation was observed in parallel with the loss of plant water content under 100 mM NaCl stress. MF prevented proline accumulation by improving water absorption. Positive correlation between H<sub>2</sub>O<sub>2</sub> accumulation and membrane thermostability (MTI) was found after MF treatments, which revealed that MF primed the plant for salinity by H<sub>2</sub>O<sub>2</sub> signaling. However, over-accumulation of H<sub>2</sub>O<sub>2</sub> after prolonged MF exposure adversely affected MTI under severe salt stress. In conclusion, magnetic priming for 6 hours was suggested for enhancing germination and growth of sweet corn under salt stress.</p>

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