Abstract
The noticeable decline in natural regeneration of three important species of west Himalayan oaks, namely Quercus glauca, Q. leucotrichophora and Q. lanuginosa, on account of excessive lopping, over grazing and tree felling accompanied by non-viable seeds due to short viability, extreme weevil and pest infestation, animal and bird predation resulting in low acorn production and thus overall poor natural regeneration is of great concern. A study was therefore, carried out with an objective to find out possibilities of improving germination ability of selected oak species using different pre-sowing treatments on three seed size classes- small, medium and large collected from Nainital region of Uttarakhand. A wide variation in seed size existed within these species and germination was found to vary with seed weight; large and medium size seeds exhibiting higher germination. Under various pre-sowing treatments, seeds from different species did not reflect uniformity in responses. Among all the set of experiments, water soaking (48 h) proved to be the best and cost effective approach by significantly improving seed germination over control, Q. glauca (53.3 to 73.3%), Q. leucotrichophora (66.67 to 90.0%) and Q. lanuginosa (58.33 to 75.0%). However, acid scarification emerges as effective pre-sowing treatment. Both water soaking and acid scarification treatments also helped in reducing Mean Germination Time. The outcomes of this study clearly reflect some of the simple, practical and cost effective methods for mass seedling production and restoration of degraded hills in west Himalaya.
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Claims 7
Claim · model-written summary
Larger and medium seeds had higher germination than small seeds.
QuercusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“large and medium size seeds exhibiting higher germination”
t0“Oaks”
Claim · model-written summary
Water soaking for 48 h significantly improved Q. glauca germination from 53.3 to 73.3% over control.
Verbatim
e0“water soaking (48 h) proved to be the best and cost effective approach by significantly improving seed germination over control, Q. glauca (53.3 to 73.3%)”
Claim · model-written summary
Water soaking for 48 h significantly improved Q. leucotrichophora germination from 66.67 to 90.0% over control.
Verbatim
e0“water soaking (48 h) proved to be the best and cost effective approach by significantly improving seed germination over control, Q. glauca (53.3 to 73.3%), Q. leucotrichophora (66.67 to 90.0%)”
Claim · model-written summary
Water soaking for 48 h significantly improved Q. lanuginosa germination from 58.33 to 75.0% over control.
Verbatim
e0“water soaking (48 h) proved to be the best and cost effective approach by significantly improving seed germination over control, Q. glauca (53.3 to 73.3%), Q. leucotrichophora (66.67 to 90.0%) and Q. lanuginosa (58.33 to 75.0%)”
Claim · model-written summary
Acid scarification was an effective presowing treatment for oaks.
- Outcome
- effective pre-sowing treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“acid scarification emerges as effective pre-sowing treatment”
t0“Oaks”
Claim · model-written summary
Water soaking reduced mean germination time in oaks.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both water soaking and acid scarification treatments also helped in reducing Mean Germination Time”
t0“Oaks”
Claim · model-written summary
Acid scarification reduced mean germination time in oaks.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both water soaking and acid scarification treatments also helped in reducing Mean Germination Time”
t0“Oaks”
The same questions in other papers
application · growth · QuercusPositive and negative results
1 in the opposite direction
- no effect
seed treatment · growth · QuercusResults agree
1 paper in the same direction as this paper
- positive
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.