Abstract
ABSTRACT Jatropha curcas L. is a plant species with many potential applications, especially medicinal uses (hypoglycemic, anti-inflammatory, haemostatic, healing, anti-tumor). The objective of this study was to test germination in moist paper rolls for whole seeds and in vitro for excised embryonic axes, in an attempt to identify the best method to assess the quality of J. curcas seed germplasm, cryopreserved with different water contents. The experimental sample with a 6.2% moisture content (MC) was divided in subsamples which were hydrated and dehydrated for 0 (control), 4, 8, 11 and 24h. The initial germination percentages were 63% for whole seeds and 81% for excised embryonic axes. After exposure to liquid nitrogen (LN), germination percentages were 48% (whole seeds) and 57% (excised embryonic axes). There was no significant difference between germination percentages in embryonic excised from seeds subjected or not subjected to freezing, with different MC. In contrast, there was a reduction of the whole seed germination percentage when exposed to LN (contrast = 0.17, standard error = 0.04, t = 4.09, p = 0.001) and not for the hydration and dehydration treatments. The methodology based on in vitro cultures of the embryonic axis isolated from seeds stored in LN with distinct MC values was more efficient than the standard germination test to evaluate the viability of J. curcas seeds before and after LN storage.
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Claims 8
Claim · model-written summary
Initial germination was 63% for whole seeds.
- Taxon
- Jatropha curcas L.
_tree_at_Samedha.jpg?width=60)
Jatropha curcast0 - Organ / stage
- whole seedse0
- Outcome
- germination percentagese0
- Value
- 63%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_tree_at_Samedha.jpg?width=500)
Verbatim
e0“The initial germination percentages were 63% for whole seeds and 81% for excised embryonic axes.”
t0“Jatropha curcas L.”
Claim · model-written summary
Initial germination was 81% for excised embryonic axes.
- Taxon
- Jatropha curcas L.Jatropha curcast0
- Organ / stage
- excised embryonic axese0
- Outcome
- germination percentagese0
- Value
- 81%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The initial germination percentages were 63% for whole seeds and 81% for excised embryonic axes.”
t0“Jatropha curcas L.”
Claim · model-written summary
After liquid nitrogen exposure, germination of whole seeds was 48%.
- Taxon
- Jatropha curcas L.Jatropha curcast0
- Organ / stage
- whole seedse0
- Treatment
- liquid nitrogene0
- Outcome
- germination percentagese0
- Value
- 48%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After exposure to liquid nitrogen (LN), germination percentages were 48% (whole seeds) and 57% (excised embryonic axes).”
t0“Jatropha curcas L.”
Claim · model-written summary
After liquid nitrogen exposure, germination of excised embryonic axes was 57%.
- Taxon
- Jatropha curcas L.Jatropha curcast0
- Organ / stage
- excised embryonic axese0
- Treatment
- liquid nitrogene0
- Outcome
- germination percentagese0
- Value
- 57%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After exposure to liquid nitrogen (LN), germination percentages were 48% (whole seeds) and 57% (excised embryonic axes).”
t0“Jatropha curcas L.”
Claim · model-written summary
Freezing did not significantly change germination of excised embryos across moisture contents.
- Taxon
- Jatropha curcas L.Jatropha curcast0
- Treatment
- freezinge0
- Outcome
- germination percentagese0
- Direction
- no significant differencee0
- Comparator
- not subjected to freezinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no significant difference between germination percentages in embryonic excised from seeds subjected or not subjected to freezing, with different MC.”
t0“Jatropha curcas L.”
Claim · model-written summary
Liquid nitrogen reduced whole seed germination.
- Taxon
- Jatropha curcas L.Jatropha curcast0
- Treatment
- LNe0
- Outcome
- whole seed germination percentagee0
- Direction
- reductione0
- Value
- 0.17e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast, there was a reduction of the whole seed germination percentage when exposed to LN (contrast = 0.17, standard error = 0.04, t = 4.09, p = 0.001) and not for the hydration and dehydration treatments.”
t0“Jatropha curcas L.”
Claim · model-written summary
Hydration and dehydration did not reduce whole seed germination.
- Taxon
- Jatropha curcas L.Jatropha curcast0
- Treatment
- hydration and dehydration treatmentse0
- Outcome
- whole seed germination percentagee0
- Direction
- note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast, there was a reduction of the whole seed germination percentage when exposed to LN (contrast = 0.17, standard error = 0.04, t = 4.09, p = 0.001) and not for the hydration and dehydration treatments.”
t0“Jatropha curcas L.”
Claim · model-written summary
Embryonic axis culture was more efficient than the standard germination test for seed viability assessment.
- Taxon
- Jatropha curcas L.Jatropha curcast0
- Outcome
- evaluate the viabilitye0
- Direction
- more efficiente0
- Comparator
- standard germination teste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The methodology based on in vitro cultures of the embryonic axis isolated from seeds stored in LN with distinct MC values was more efficient than the standard germination test to evaluate the viability of J. curcas seeds before and after LN storage.”
t0“Jatropha curcas L.”
The same questions in other papers
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nitrogen · growth · Jatropha curcasPositive and negative results
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See all 7 papers →drought · growth · Jatropha curcasPositive and negative results
5 papers in the same direction as this paper · 3 in the opposite direction
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See all 9 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.