Abstract
BACKGROUND: Improving the rate of genetic gain of cereal crop will rely on the accelerated crop breeding pipelines to allow rapid delivery of improved crop varieties. The laborious, time-consuming traditional breeding cycle, and the seasonal variations are the key factor restricting the breeder to develop new varieties. To address these issues, a revolutionized cost-effective speed breeding protocol for large-scale rice germplasm advancement is presented in the present study. The protocol emphasises on optimizing potting material, balancing the double-edged sword of limited nutritional dose, mode and stage of application, plant density, temperature, humidity, light spectrum, intensity, photoperiod, and hormonal regulation to accelerate rice growth and development. RESULTS: /s and photoperiod of 13 h light and 11 h dark during seedling and vegetative stage and 8 h light and 16 h dark during reproductive stage had a significant effect (P < 0.05) on reducing the mean plant height, tillering, and inducing early flowering. Our results confirmed that one generation can be achieved within 68-75 days using the cost-effective SpeedyPaddy protocol resulting in 4-5 generations per year across different duration of rice varieties. The other applications include hybridization, trait-based phenotyping, and mapping of QTL/genes. The estimated cost to run one breeding cycle with plant capacity of 15,680 plants in SpeedyPaddy was $2941 including one-time miscellaneous cost which is much lower than the advanced controlled environment speed breeding facilities. CONCLUSION: The protocol offers a promising cost-effective solution with average saving of 2.0 to 2.6 months per breeding cycle with an integration of genomics-assisted selection, trait-based phenotyping, mapping of QTL/genes, marker development may accelerate the varietal development and release. This outstanding cost-effective break-through marks a significant leap in rice breeding addressing climate change and food security.
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Claims 7
Claim · model-written summary
One rice generation can be achieved within 68-75 days with the SpeedyPaddy protocol.
- Taxon
- rice
Oryza sativat0 - Outcome
- one generatione0
- Value
- 68-75 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SpeedyPaddy: a revolutionized cost-effective protocol for large scale offseason advancement of rice germplasm”
e0“one generation can be achieved within 68-75 days”
Claim · model-written summary
The SpeedyPaddy protocol allows 4-5 generations of rice per year.
- Taxon
- riceOryza sativat0
- Outcome
- generations per yeare1
- Value
- 4-5 generations per yeare1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SpeedyPaddy: a revolutionized cost-effective protocol for large scale offseason advancement of rice germplasm”
e1“resulting in 4-5 generations per year across different duration of rice varieties”
Claim · model-written summary
One SpeedyPaddy breeding cycle of 15,680 plants costs about $2941, much lower than advanced controlled-environment speed-breeding facilities.
- Taxon
- riceOryza sativat0
- Outcome
- The estimated cost to run one breeding cyclee2
- Value
- $2941e2
- Comparator
- advanced controlled environment speed breeding facilitiese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SpeedyPaddy: a revolutionized cost-effective protocol for large scale offseason advancement of rice germplasm”
e2“The estimated cost to run one breeding cycle with plant capacity of 15,680 plants in SpeedyPaddy was $2941”
e3“which is much lower than the advanced controlled environment speed breeding facilities”
Claim · model-written summary
A photoperiod of 13 h light and 11 h dark during seedling and vegetative stages reduced mean plant height and tillering in rice.
- Taxon
- riceOryza sativat0
- Treatment
- photoperiod of 13 h light and 11 h darke5
- Outcome
- mean plant height, tilleringe4
- Direction
- reducinge4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SpeedyPaddy: a revolutionized cost-effective protocol for large scale offseason advancement of rice germplasm”
e4“had a significant effect (P < 0.05) on reducing the mean plant height, tillering, and inducing early flowering”
e5“photoperiod of 13 h light and 11 h dark during seedling and vegetative stage”
Claim · model-written summary
A photoperiod of 13 h light and 11 h dark during seedling and vegetative stages induced early flowering in rice.
- Taxon
- riceOryza sativat0
- Treatment
- photoperiod of 13 h light and 11 h darke5
- Outcome
- early floweringe4
- Direction
- inducinge4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SpeedyPaddy: a revolutionized cost-effective protocol for large scale offseason advancement of rice germplasm”
e4“had a significant effect (P < 0.05) on reducing the mean plant height, tillering, and inducing early flowering”
e5“photoperiod of 13 h light and 11 h dark during seedling and vegetative stage”
Claim · model-written summary
The SpeedyPaddy protocol saves 2.0 to 2.6 months per breeding cycle.
- Taxon
- riceOryza sativat0
- Outcome
- average savinge6
- Value
- 2.0 to 2.6 monthse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SpeedyPaddy: a revolutionized cost-effective protocol for large scale offseason advancement of rice germplasm”
e6“average saving of 2.0 to 2.6 months per breeding cycle”
Claim · model-written summary
The protocol may accelerate rice varietal development and release.
- Taxon
- riceOryza sativat0
- Outcome
- varietal development and releasee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SpeedyPaddy: a revolutionized cost-effective protocol for large scale offseason advancement of rice germplasm”
e7“may accelerate the varietal development and release”
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