A comparative assessment on regeneration status of indigenous woody plants in Eucalyptus grandis plantation and adjacent natural forest

2009 ◽  
Vol 20 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Shiferaw Alem ◽  
Tadesse Woldemariam
Keyword(s):  
Woody Plants ◽  
Eucalyptus Grandis ◽  
Comparative Assessment ◽  
Natural Forest ◽  
Regeneration Status

Woody plants' diversity, structural analysis and regeneration status of Wof Washa natural forest, North-east Ethiopia

2013 ◽  
Vol 51 (4) ◽  
pp. 599-608 ◽  
Author(s):  
Gebremicael Fisaha ◽  
Kitessa Hundera ◽  
Gemedo Dalle
Keyword(s):  
Structural Analysis ◽  
Woody Plants ◽  
Natural Forest ◽  
North East ◽  
Regeneration Status

scholarly journals A new and rapid micropropagation protocol for Eucalyptus grandis Hill ex Maiden

2020 ◽  
Vol 29 (1) ◽  
pp. eSC04
Author(s):  
Anabel-Viviana Di-Gaudio ◽  
Esteban Tubert ◽  
Leandro-Ezequiel Laino ◽  
Jose-María Chaín ◽  
Sandra-Irene Pitta-Alvarez ◽  
...  
Keyword(s):  
Woody Plants ◽  
Eucalyptus Grandis ◽  
Nodal Segments ◽  
Ex Vitro ◽  
Breeding Programs ◽  
Hydroponic System ◽  
Rate Of Success ◽  
Production Dynamics ◽  
Intermediate Rate

Aim of the study: We developed a faster micropropagation protocol specifically designed for Eucalyptus grandis. Eucalyptus breeding programs use micropropagation protocols to obtain high quality cloned seedlings, but current protocols are excessively time consuming.Area of the study: The protocol has been developed in Argentina, but it can be applied in anywhere.Materials and methods: We used nodal segments as initial explants to obtain micropropagated shoots, which were then simultaneously rooted ex vitro and acclimated in a hydroponic system. Nodal segments were cultured in a MS medium supplemented with 1 mg l-1 6-benzylaminopurine, 30 g l-1 sucrose, 1 g l-1 active charcoal and 8 g l-1 agar and incubated for four weeks at 25 ± 2°C under 16 h day photoperiod. Then, micropropagated shoots were exposed 15 seconds to 5000 ppm indol-butyric acid prior to being transferred to a hydroponic system, allowing simultaneous ex vitro rooting and acclimatization.Main results: 73 ± 9% of nodal segments grew to generate 1.73 ± 1.03 shoots per explant (length: 0.76 ± 0.44 cm). After four weeks in hydroponic system, 46 ± 4 % of micropropagated shoots developed roots, which represents an acceptable and intermediate rate of success, compared to the reported in vitro rooting rates.Research highlights: Our protocol allowed to obtain micropropagated seedlings in a total timespan of 8 weeks. Our results show that, by utilizing a hydroponic system, traditional protocols to micropropagate Eucalyptus can be substantially enhanced, allowing for improved production dynamics and potentially resulting in better organized seedling manufacturing facilities.Keywords: Woody plants; silviculture; nursery seedlings; rooting methods; hydroponics; acclimatization.

Comparative regeneration status in a natural forest and enrichment plantations of Chittagong (south) forest division, Bangladesh

2004 ◽  
Vol 15 (4) ◽  
pp. 255-260 ◽  
Author(s):  
M. Kamal Hossain ◽  
M. Lutfor Rahman ◽  
A. T. M. Rafiqul Hoque ◽  
M. Khairul Alam
Keyword(s):  
Natural Forest ◽  
Regeneration Status ◽  
Forest Division

scholarly journals Impact of Exclosure on Species Diversity, Population Structure and Regeneration Status of Woody Plants in Lowland Northern Tigray, Ethiopia

2019 ◽  
pp. 1-14
Author(s):  
Nuru Mohammed
Keyword(s):  
Population Structure ◽  
Species Diversity ◽  
Species Composition ◽  
Water Conservation ◽  
Woody Plants ◽  
Woody Plant ◽  
Basal Area ◽  
Northern Ethiopia ◽  
Importance Value Index ◽  
Regeneration Status

Aim: This study was conducted to assessing woody plant composition, population structure and regeneration status in lowland exclosure (EX) of Northern Ethiopia. Study Design: Investigation of parameters was undertaken from 71 plots with size of 20 m x 10 m laid systematically along transect lines for vegetation data. These 200 m2 plots were used for assessment of trees with DBH >5 cm. Small quadrats of 4 m*4 m (16 m2) nested within the bigger plots was laid at the four corners and center of each plots. These were used for measuring seedling and sapling individuals. To analyze species diversity, population structure and regeneration status of woody plants were by computing abundance, density, basal area, Importance value index (IVI) and using Shannon-Weiner diversity and evenness indices. Results: According to vegetation survey result, a total of 23, 17 and 26 woody species were recorded, at Kara, Erba and Shektekli exclosures (EXs), respectively. While 8, 7 and 5 species of woody plant were in open grazing land (OGL). The total mean densities of all woody plants were found to be 1530, 1480 and 2999 individual’s ha-1 at Kara, Erba and Shektekli in EXs. Conclusion: The study suggested that the regional government have to considering EXs as useful for restoration or rehabitation strategy in the region, the vegetation in all the EXs in the study sites have a higher species composition, diversity, density, increment of basal area and regeneration woody plants than OGL, as a result of management differences in EXs. However, there are also variation on species composition, diversity, density increment of basal area and regeneration woody plants among exclosures having similar age and altitude for instance the species recorded in Erba site is lower than with other of EXs, This could be due to among local site characteristic variation and high grazing happen before Ex establishment exists. Therefore, we need to apply soil and water conservation, enrichment planting with indigenous tree species and strengthen local management institution in effectively protect the exclosure.

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