Abstract
The present study was conducted during two successive seasons of 2020 and 2021 to determine the effect of some pre- germination treatments on germination and seedling growth of Tamarindus indica and Melia azedarach. In this study, seeds of the two species were subjected to seven treatments i.e. soaking seeds in GA3 at 1000, 2000 and 3000 ppm for 24 h.; immersing seeds in concentrated sulphuric acid for 10 and 20 min.; seed scarification by steel file and untreated (control) seeds. Seeds were sown in poly ethylene pots (25 x 30 cm) under normal environmental condition for germination. The highest germination percentage was recorded in seeds of the two species treated by mechanical scarification, followed by immersion in concentrated sulphuric acid (98%) for 20 and 10 minutes. Meanwhile, the lowest values of germination percentage were obtained with the control, followed by soaking seeds in GA3 at 1000 ppm compared to other treatments. Mechanical scarification, followed by concentrated H2SO4 for 20 and 10 min. led to highly significant reduction in time to attain 50% germination as well as the highest values of vigor index for the tested species in the 1st and 2nd seasons compared to other treatments. Also, the results showed that the pre-germination treatments have a significant effect on the growth performance (shoot and root length, number of leaves, fresh and dry weight of shoots and roots as well as chlorophyll content) of M. azedarach and T. indica. The highest values of the growth parameters were obtained from applying scarification and concentrated sulphuric acid for 20 and 10 min., respectively. The study recommended mechanical scarification and sulphuric acid for 20 minutes for the best seed germination and seedling growth of these tree species.
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Claims 10
Claim · model-written summary
Mechanical scarification gave the highest germination percentage in both species.
- Taxon
- Melia azedarach l. and Tamarindus indica l. trees
_%E0%A4%87%E0%A4%AE%E0%A4%B2%E0%A5%80_Tree.jpg?width=60)
Tamarindus indica
Melia azedaracht0 - Treatment
- mechanical scarificatione0
- Outcome
- germination percentagee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_%E0%A4%87%E0%A4%AE%E0%A4%B2%E0%A5%80_Tree.jpg?width=500)
Verbatim
e0“The highest germination percentage was recorded in seeds of the two species treated by mechanical scarification”
t0“Melia azedarach l. and Tamarindus indica l. trees”
Claim · model-written summary
Sulphuric acid immersion for 20 and 10 minutes followed scarification for germination percentage.
- Taxon
- Melia azedarach l. and Tamarindus indica l. treesTamarindus indicaMelia azedaracht0
- Treatment
- immersion in concentrated sulphuric acid (98%) for 20 and 10 minutese0
- Direction
- followed bye0
Not reportedComparatorOutcome
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“followed by immersion in concentrated sulphuric acid (98%) for 20 and 10 minutes”
t0“Melia azedarach l. and Tamarindus indica l. trees”
Claim · model-written summary
The control had the lowest germination percentage.
- Taxon
- Melia azedarach l. and Tamarindus indica l. treesTamarindus indicaMelia azedaracht0
- Treatment
- controle0
- Outcome
- germination percentagee0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest values of germination percentage were obtained with the control”
t0“Melia azedarach l. and Tamarindus indica l. trees”
Claim · model-written summary
GA3 at 1000 ppm followed the control among the lowest germination percentages.
- Taxon
- Melia azedarach l. and Tamarindus indica l. treesTamarindus indicaMelia azedaracht0
- Treatment
- soaking seeds in GA3 at 1000 ppme0
- Direction
- followed bye0
- Comparator
- other treatmentse0
Not reportedOutcome
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“followed by soaking seeds in GA3 at 1000 ppm compared to other treatments”
t0“Melia azedarach l. and Tamarindus indica l. trees”
Claim · model-written summary
Mechanical scarification and acid immersion reduced time to 50% germination.
- Taxon
- Melia azedarach l. and Tamarindus indica l. treesTamarindus indicaMelia azedaracht0
- Treatment
- Mechanical scarificatione0
- Outcome
- time to attain 50% germinatione0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical scarification, followed by concentrated H2SO4 for 20 and 10 min. led to highly significant reduction in time to attain 50% germination”
t0“Melia azedarach l. and Tamarindus indica l. trees”
Claim · model-written summary
Mechanical scarification and acid immersion gave the highest vigor index.
- Taxon
- Melia azedarach l. and Tamarindus indica l. treesTamarindus indicaMelia azedaracht0
- Treatment
- Mechanical scarificatione0
- Outcome
- vigor indexe0
- Direction
- higheste0
- Comparator
- other treatmentse0
- Setting
- 1st and 2nd seasonse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical scarification, followed by concentrated H2SO4 for 20 and 10 min. led to highly significant reduction in time to attain 50% germination as well as the highest values of vigor index for the tested species in the 1st and 2nd seasons compared to other treatments”
t0“Melia azedarach l. and Tamarindus indica l. trees”
Claim · model-written summary
Pre-germination treatments significantly affected seedling growth traits.
- Taxon
- M. azedarach and T. indicaTamarindus indicaMelia azedarache0
- Treatment
- pre-germination treatmentse0
- Outcome
- shoot and root length, number of leaves, fresh and dry weight of shoots and rootse0
- Direction
- significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pre-germination treatments have a significant effect on the growth performance (shoot and root length, number of leaves, fresh and dry weight of shoots and roots as well as chlorophyll content) of M. azedarach and T. indica”
Claim · model-written summary
Pre-germination treatments significantly affected chlorophyll content.
- Taxon
- M. azedarach and T. indicaTamarindus indicaMelia azedarache0
- Treatment
- pre-germination treatmentse0
- Outcome
- chlorophyll contente0
- Direction
- significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pre-germination treatments have a significant effect on the growth performance (shoot and root length, number of leaves, fresh and dry weight of shoots and roots as well as chlorophyll content) of M. azedarach and T. indica”
Claim · model-written summary
Scarification gave the highest growth parameter values.
- Taxon
- Melia azedarach l. and Tamarindus indica l. treesTamarindus indicaMelia azedaracht0
- Treatment
- scarificatione0
- Outcome
- growth parameterse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest values of the growth parameters were obtained from applying scarification and concentrated sulphuric acid for 20 and 10 min., respectively”
t0“Melia azedarach l. and Tamarindus indica l. trees”
Claim · model-written summary
The authors recommended mechanical scarification and 20-minute acid treatment for germination and seedling growth.
- Taxon
- Melia azedarach l. and Tamarindus indica l. treesTamarindus indicaMelia azedaracht0
- Outcome
- mechanical scarification and sulphuric acid for 20 minutese0
- Qualifier
- best seed germination and seedling growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The study recommended mechanical scarification and sulphuric acid for 20 minutes for the best seed germination and seedling growth of these tree species”
t0“Melia azedarach l. and Tamarindus indica l. trees”
The same questions in other papers
seed treatment · growth · Melia azedarach (chinaberry)Results agree
1 paper in the same direction as this paper
- positive
seed treatment · growth · Tamarindus indica (tamarind)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.