Abstract
The vegetative growth of potato (Solanum tuberosum L.) cvs. Norland (NL) and Denali (DN) was investigated comparing SONAGRO high-pressure sodium (HPS-S), standard high-pressure sodium (HPS), and metal halide (MH) lamps. Plants were initiated from nodal culture and grown hydroponically in a reach-in growth chamber for 35 d with a 12-hr light/12-hr dark photoperiod and corresponding thermoperiod of 20/16 C. PPF for each treatment was maintained at 300 μmol m -2 s -1 and CO 2 levels maintained at l000 μmol mol -1 to promote growth. Results showed that main stem length (SL) and number of internodes (INT) for DN were significantly higher under HPS compared to MH, while HPS-S was not significantly different from the other lamp types. Total dry weight (TDW) of NL plants was significantly higher for HPS than for either HPS-S and MH, however there was no significant difference in SL and INT among lamp types. The data suggest that the 12.6% increase in blue light (400-500 nm) with HPS-S in comparison to conventional HPS lamps may not be sufficient to consistently decrease the stem elongation effects commonly seen with plants grown under HPS.
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Claims 5
Claim · model-written summary
Denali stem length and internode number were significantly higher under HPS than MH.
- Taxon
- Solanum tuberosum L.
Solanum tuberosume1 - Material
- Denalie1
- Treatment
- HPSe0
- Outcome
- main stem length (SL) and number of internodes (INT)e0
- Direction
- highere0
- Comparator
- MHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“main stem length (SL) and number of internodes (INT) for DN were significantly higher under HPS compared to MH”
e1“potato (Solanum tuberosum L.) cvs. Norland (NL) and Denali (DN)”
Claim · model-written summary
Denali stem length and internode number under HPS-S did not significantly differ from other lamps.
- Taxon
- Solanum tuberosum L.Solanum tuberosume1
- Material
- Denalie1
- Treatment
- HPS-Se0
- Outcome
- main stem length (SL) and number of internodes (INT)e0
- Direction
- not significantly differente0
- Comparator
- other lamp typese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“main stem length (SL) and number of internodes (INT) for DN were significantly higher under HPS compared to MH, while HPS-S was not significantly different from the other lamp types”
e1“potato (Solanum tuberosum L.) cvs. Norland (NL) and Denali (DN)”
Claim · model-written summary
Norland dry weight was significantly higher under HPS than HPS-S and MH.
- Taxon
- Solanum tuberosum L.Solanum tuberosume1
- Material
- Norlande1
- Treatment
- HPSe0
- Outcome
- Total dry weight (TDW)e0
- Direction
- highere0
- Comparator
- HPS-S and MHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total dry weight (TDW) of NL plants was significantly higher for HPS than for either HPS-S and MH”
e1“potato (Solanum tuberosum L.) cvs. Norland (NL) and Denali (DN)”
Claim · model-written summary
Norland stem length and internode number did not significantly differ among lamps.
- Taxon
- Solanum tuberosum L.Solanum tuberosume1
- Material
- Norlande1
- Treatment
- lamp typese0
- Outcome
- SL and INTe0
- Direction
- no significant differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total dry weight (TDW) of NL plants was significantly higher for HPS than for either HPS-S and MH, however there was no significant difference in SL and INT among lamp types”
e1“potato (Solanum tuberosum L.) cvs. Norland (NL) and Denali (DN)”
Claim · model-written summary
The extra blue light in HPS-S may be insufficient to consistently reduce stem elongation.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- HPS-Se0
- Outcome
- stem elongation effectse0
- Direction
- decreasee0
- Qualifier
- may not be sufficiente0
- Comparator
- conventional HPS lampse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 12.6% increase in blue light (400-500 nm) with HPS-S in comparison to conventional HPS lamps may not be sufficient to consistently decrease the stem elongation effects commonly seen with plants grown under HPS”
t0“POTATO”
The same questions in other papers
sodium atom · growth · Solanum tuberosum (potato)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- 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.