Abstract
The present investigations attempted to study the effects of red, blue and green LEDs effect on seed germination, first leaf length, first leaf blade length, root length, seedling fresh and dry weight. Seeds of five rice varieties were germinated and seedlings were grown under dark and red, blue, green LEDs lighting system (6 h photoperiod and 18 h dark) set at 20 to 24± 2 °C for day and night respectively and 70 ± 2 % relative humidity in a control chamber for 14 days (starting 3 days after plated for germination). The result showed that germination percent increased significantly in BRRIdhan52 and BRRIdhan75 under red-blue-green LEDs than dark. First leaf length increased in dark than LEDs treatment. Longest leaf (10.42 cm) was recorded in BRRIdhan86 in dark and under LEDs in BRRIdhan75 (5.70 cm). First leaf blade length was highest in BRRIdhan52 (2.56 cm) under LEDs treatment and in dark BRRIdhan67 had the longest (2.48 cm). Root length was also increased significantly in studied rice varieties. Though, longest root was found in dark in BRRIdhan71 (6.69 cm) and under LEDs, BRRIdhan71 had the longest root (6.35 cm). Seedling fresh and dry weight were highest under red-blue-dark LEDs treatment. BRRIdhan86 had the highest and BRRIdhan67 had the lowest seedling fresh and dry weight with a range of 0.323g to 0.451g and 0.037g to 0.052g respectively than dark condition. Root length showed positive significant correlation with seedling fresh weight (r = 0.876) and seedling dry weight (r = 0.873). Whereas seedling fresh weight showed complete correlation (r = 1) with seedling dry weight. Response index was negative for first leaf length in the studied rice varieties. Highest response index (35.93) was observed for seedling fresh and dry weight in BRRIdhan75 and BRRIdhan86. Environ. Sci. & Natural Resources, 13(1&2): 63-69, 2020
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Claims 16
Claim · model-written summary
Red-blue-green LEDs increased germination in BRRIdhan52 and BRRIdhan75 versus dark.
- Taxon
- Rice
Oryza sativat0 - Material
- BRRIdhan52 and BRRIdhan75e0
- Treatment
- red-blue-green LEDse0
- Outcome
- germination percente0
- Direction
- increasede0
- Comparator
- darke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“germination percent increased significantly in BRRIdhan52 and BRRIdhan75 under red-blue-green LEDs than dark.”
t0“Rice”
Claim · model-written summary
First leaf length was greater in darkness than under LEDs.
- Taxon
- RiceOryza sativat0
- Treatment
- darke0
- Outcome
- First leaf lengthe0
- Direction
- increasede0
- Comparator
- LEDs treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“First leaf length increased in dark than LEDs treatment.”
t0“Rice”
Claim · model-written summary
In darkness BRRIdhan86 had the longest leaf, 10.42 cm.
- Taxon
- RiceOryza sativat0
- Material
- BRRIdhan86e0
- Outcome
- Longest leafe0
- Direction
- Longeste0
- Value
- 10.42 cme0
- Setting
- darke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Longest leaf (10.42 cm) was recorded in BRRIdhan86 in dark”
t0“Rice”
Claim · model-written summary
Under LEDs BRRIdhan75 had the longest leaf, 5.70 cm.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under LEDs in BRRIdhan75 (5.70 cm)”
t0“Rice”
Claim · model-written summary
Under LEDs BRRIdhan52 had the highest first leaf blade length, 2.56 cm.
- Taxon
- RiceOryza sativat0
- Material
- BRRIdhan52e0
- Outcome
- First leaf blade lengthe0
- Direction
- higheste0
- Value
- 2.56 cme0
- Setting
- under LEDs treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“First leaf blade length was highest in BRRIdhan52 (2.56 cm) under LEDs treatment”
t0“Rice”
Claim · model-written summary
In darkness BRRIdhan67 had the longest blade, 2.48 cm.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in dark BRRIdhan67 had the longest (2.48 cm)”
t0“Rice”
Claim · model-written summary
Root length increased significantly in the rice varieties.
- Taxon
- riceOryza sativae0
- Outcome
- Root lengthe0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root length was also increased significantly in studied rice varieties.”
Claim · model-written summary
BRRIdhan71 had the longest root in darkness, 6.69 cm.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“longest root was found in dark in BRRIdhan71 (6.69 cm)”
t0“Rice”
Claim · model-written summary
BRRIdhan71 had the longest root under LEDs, 6.35 cm.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under LEDs, BRRIdhan71 had the longest root (6.35 cm)”
t0“Rice”
Claim · model-written summary
Fresh and dry seedling weight were highest under red-blue-dark LEDs.
- Taxon
- RiceOryza sativat0
- Treatment
- red-blue-dark LEDs treatmente0
- Outcome
- Seedling fresh and dry weighte0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling fresh and dry weight were highest under red-blue-dark LEDs treatment.”
t0“Rice”
Claim · model-written summary
BRRIdhan86 had highest fresh and dry seedling weight, BRRIdhan67 lowest.
- Taxon
- RiceOryza sativat0
- Material
- BRRIdhan86e0
- Outcome
- seedling fresh and dry weighte0
- Direction
- higheste0
- Comparator
- BRRIdhan67e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BRRIdhan86 had the highest and BRRIdhan67 had the lowest seedling fresh and dry weight with a range of 0.323g to 0.451g and 0.037g to 0.052g respectively than dark condition.”
t0“Rice”
Claim · model-written summary
Root length correlated positively with fresh weight, r = 0.876.
- Taxon
- RiceOryza sativat0
- Organ / stage
- Roote0
- Outcome
- seedling fresh weighte0
- Direction
- positivee0
- Value
- r = 0.876e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root length showed positive significant correlation with seedling fresh weight (r = 0.876)”
t0“Rice”
Claim · model-written summary
Root length correlated positively with dry weight, r = 0.873.
- Taxon
- RiceOryza sativat0
- Organ / stage
- Roote0
- Outcome
- seedling dry weighte0
- Direction
- positivee0
- Value
- r = 0.873e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root length showed positive significant correlation with seedling fresh weight (r = 0.876) and seedling dry weight (r = 0.873).”
t0“Rice”
Claim · model-written summary
Fresh and dry seedling weights were perfectly correlated, r = 1.
- Taxon
- RiceOryza sativat0
- Outcome
- seedling dry weighte0
- Direction
- complete correlatione0
- Value
- r = 1e0
- Comparator
- seedling fresh weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedling fresh weight showed complete correlation (r = 1) with seedling dry weight.”
t0“Rice”
Claim · model-written summary
First leaf length response index was negative.
- Taxon
- riceOryza sativae0
- Organ / stage
- first leafe0
- Outcome
- Response indexe0
- Direction
- negativee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Response index was negative for first leaf length in the studied rice varieties.”
Claim · model-written summary
The highest fresh and dry weight response index was 35.93 in BRRIdhan75 and BRRIdhan86.
- Taxon
- RiceOryza sativat0
- Material
- BRRIdhan75 and BRRIdhan86e0
- Outcome
- response indexe0
- Direction
- Higheste0
- Value
- 35.93e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest response index (35.93) was observed for seedling fresh and dry weight in BRRIdhan75 and BRRIdhan86.”
t0“Rice”
The same questions in other papers
light · growth · Oryza sativa (rice)Positive and negative results
54 papers in the same direction as this paper · 38 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- no effect
91 papers more in this group
See all 95 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.