Abstract
An experiment entitled “Influence of phosphorus supply on photosynthesis, flowering and grain yield in rice genotypes” was conducted during Kharif 2011 at Directorate of Rice Research experimental farm, Rajendranagar, Hyderabad. The treatments comprised of four levels of phosphorus viz. 0, 20, 40, 60 kg P2O5 ha and 10 rice genotypes viz. IET-21415, JGL-3844, IET-21680, JGL-384, MTU-1010, IET21057, JGL-1798, IET-21669, JGL-3855 and Swarna. The experiment was laid out in Randomized block design with factorial concept and replicated thrice. The soil of the experiment site is a vertisol, neutral in reaction, high in nitrogen, potassium and medium in phosphorus availability. Among the phosphorus treatments phosphorus at 60 kg P2O5 ha has recorded significantly higher values for plant height, number of effective tillers, number of leaves, leaf area index, leaf area duration, dry matter of shoot, root and total dry matter. The above treatment has also positively influenced the SPAD chlorophyll meter readings, fluorescence and photosynthetic rate. Effects of phosphorus were significant in recording higher values for yield attributes like length of panicle, filled spikelet percentage, test weight. All these factors have ultimately resulted in a significant increase in seed yield. The phosphorus content in root, shoot and grain was also positively influenced by phosphorus levels. Among the genotypes studied IET-21415 has recorded maximum grain yield followed by MTU-1010, highest grain yield in these genotypes can be attributed to more leaf area index, leaf area duration, more SPAD and fluorescence values, increased rate of photosynthesis and pollen viability. The cumulative effect of all these factors has contributed to increased number of filled spikelets, more test weight and finally more yields as compared to other genotypes. Phosphorus content in root and grain was also more in the genotype IET-21415. Thus among the phosphorus levels basal application of phosphorus at 60 kg P2O5 ha and among the genotypes IET-21415 and MTU-1010 have recorded highest grain yield.
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Claims 10
Claim · model-written summary
Phosphorus at 60 kg P2O5 ha gave significantly higher plant height, number of effective tillers and number of leaves than the other phosphorus treatments.
- Taxon
- rice
Oryza sativae1 - Treatment
- phosphorus at 60 kg P2O5 hae2
- Outcome
- plant height, number of effective tillers, number of leavese2
- Direction
- highere2
- Comparator
- phosphorus treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“10 rice genotypes”
e2“Among the phosphorus treatments phosphorus at 60 kg P2O5 ha has recorded significantly higher values for plant height, number of effective tillers, number of leaves”
Claim · model-written summary
Phosphorus at 60 kg P2O5 ha gave significantly higher shoot, root and total dry matter than the other phosphorus treatments.
- Taxon
- riceOryza sativae1
- Treatment
- phosphorus at 60 kg P2O5 hae2
- Outcome
- dry matter of shoot, root and total dry mattere4
- Direction
- highere2
- Comparator
- phosphorus treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“10 rice genotypes”
e2“Among the phosphorus treatments phosphorus at 60 kg P2O5 ha has recorded significantly higher values for plant height, number of effective tillers, number of leaves”
e4“dry matter of shoot, root and total dry matter”
Claim · model-written summary
Phosphorus at 60 kg P2O5 ha positively influenced SPAD chlorophyll meter readings, fluorescence and photosynthetic rate.
- Taxon
- riceOryza sativae1
- Treatment
- phosphorus at 60 kg P2O5 hae2
- Outcome
- SPAD chlorophyll meter readings, fluorescence and photosynthetic ratee5
- Direction
- positively influencede5
- Comparator
- phosphorus treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“10 rice genotypes”
e2“Among the phosphorus treatments phosphorus at 60 kg P2O5 ha has recorded significantly higher values”
e5“The above treatment has also positively influenced the SPAD chlorophyll meter readings, fluorescence and photosynthetic rate”
Claim · model-written summary
Phosphorus significantly increased the length of panicle, filled spikelet percentage and test weight.
- Taxon
- riceOryza sativae1
- Treatment
- phosphoruse6
- Outcome
- length of panicle, filled spikelet percentage, test weighte6
- Direction
- highere6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“10 rice genotypes”
e6“Effects of phosphorus were significant in recording higher values for yield attributes like length of panicle, filled spikelet percentage, test weight”
Claim · model-written summary
Phosphorus significantly increased seed yield.
- Taxon
- riceOryza sativae1
- Treatment
- phosphoruse6
- Outcome
- seed yielde7
- Direction
- increasee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“10 rice genotypes”
e7“resulted in a significant increase in seed yield”
e6“Effects of phosphorus were significant”
Claim · model-written summary
Phosphorus levels positively influenced phosphorus content in root, shoot and grain.
- Taxon
- riceOryza sativae1
- Treatment
- phosphorus levelse5
- Outcome
- phosphorus content in root, shoot and graine5
- Direction
- positively influencede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“10 rice genotypes”
e5“The phosphorus content in root, shoot and grain was also positively influenced by phosphorus levels”
Claim · model-written summary
IET-21415 recorded the maximum grain yield among the genotypes studied.
- Taxon
- riceOryza sativae1
- Material
- IET-21415e6
- Outcome
- grain yielde6
- Direction
- maximume6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“10 rice genotypes”
e6“Among the genotypes studied IET-21415 has recorded maximum grain yield”
Claim · model-written summary
MTU-1010 followed IET-21415 in grain yield among the genotypes studied.
- Taxon
- riceOryza sativae1
- Material
- MTU-1010e6
- Outcome
- grain yielde6
- Qualifier
- maximum grain yield followed bye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“10 rice genotypes”
e6“maximum grain yield followed by MTU-1010”
Claim · model-written summary
The highest grain yield of these genotypes is attributed to more leaf area index, leaf area duration, more SPAD and fluorescence values, increased photosynthesis and pollen viability.
- Taxon
- riceOryza sativae1
- Outcome
- highest grain yielde7
- Qualifier
- more leaf area index, leaf area duration, more SPAD and fluorescence values, increased rate of photosynthesis and pollen viabilitye7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“10 rice genotypes”
e7“highest grain yield in these genotypes can be attributed to more leaf area index, leaf area duration, more SPAD and fluorescence values, increased rate of photosynthesis and pollen viability”
Claim · model-written summary
Phosphorus content in root and grain was higher in the genotype IET-21415.
- Taxon
- riceOryza sativae1
- Material
- IET-21415e7
- Outcome
- Phosphorus content in root and graine7
- Direction
- moree7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“10 rice genotypes”
e7“Phosphorus content in root and grain was also more in the genotype IET-21415”
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See all 475 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.