Abstract
Rice fragrance, cooked rice elongation and amylose content are some of the traits used in determining rice grain quality. 2-acetyl-1-pyrroline (2-AP) is the major compound that is responsible for fragrance in rice. This experiment was conducted with two indica rice cultivars: Meixiangzhan 2 and Xiangyaxiangzhan. Three temperature-controlled chambers: High (32 °C from 06:00 to 17:59 and 26 °C from 18:00 to 05:59), medium (27 °C from 06:00 to 17:59 and 21 °C from 18:00 to 05:59) and low (22 °C from 06:00 to 17:59 and 16 °C from 18:00 to 05:59) were used for the study. At the onset of heading, both cultivars were transferred to the three temperature-controlled chambers. Our results showed that in both cultivars, low temperature growth had the highest 2-AP content, while high temperature growth recorded the lowest 2-AP content. Principal component analysis showed remarkable differences in the metabolomes of rice grown in high, medium and low regimes. In the grains of both cultivars, we observed significant reduction in 2-AP content after 6 and 9 months of storage, however; 2-AP retention differed greatly in both cultivars. We also reported that low temperature growth increased cooked rice elongation percentage and the biosynthesis of amylose in rice. In conclusion, our findings will provide more information to breeders working on the improvement of rice grain quality.
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Claims 6
Claim · model-written summary
Low temperature growth gave the highest 2-AP content in both rice cultivars compared with high temperature growth.
- Taxon
- indica rice
Oryza sativa Indica Groupe0 - Material
- Meixiangzhan 2 and Xiangyaxiangzhane0
- Treatment
- low temperature growthe1
- Outcome
- 2-AP contente1
- Direction
- higheste1
- Comparator
- high temperature growthe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two indica rice cultivars: Meixiangzhan 2 and Xiangyaxiangzhan”
e1“low temperature growth had the highest 2-AP content, while high temperature growth recorded the lowest 2-AP content”
Claim · model-written summary
High temperature growth gave the lowest 2-AP content in both rice cultivars compared with low temperature growth.
- Taxon
- indica riceOryza sativa Indica Groupe0
- Material
- Meixiangzhan 2 and Xiangyaxiangzhane0
- Treatment
- high temperature growthe1
- Outcome
- 2-AP contente1
- Direction
- loweste1
- Comparator
- low temperature growthe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two indica rice cultivars: Meixiangzhan 2 and Xiangyaxiangzhan”
e1“low temperature growth had the highest 2-AP content, while high temperature growth recorded the lowest 2-AP content”
Claim · model-written summary
Principal component analysis showed remarkable differences in the metabolomes of rice grown in high, medium and low temperature regimes.
- Taxon
- indica riceOryza sativa Indica Groupe0
- Treatment
- high, medium and low regimese1
- Outcome
- metabolomes of ricee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two indica rice cultivars: Meixiangzhan 2 and Xiangyaxiangzhan”
e1“Principal component analysis showed remarkable differences in the metabolomes of rice grown in high, medium and low regimes”
Claim · model-written summary
In the grains of both cultivars 2-AP content was significantly reduced after 6 and 9 months of storage.
- Taxon
- indica riceOryza sativa Indica Groupe0
- Organ / stage
- grainse1
- Treatment
- storagee1
- Outcome
- 2-AP contente1
- Direction
- reductione1
- Qualifier
- 6 and 9 monthse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two indica rice cultivars: Meixiangzhan 2 and Xiangyaxiangzhan”
e1“In the grains of both cultivars, we observed significant reduction in 2-AP content after 6 and 9 months of storage”
Claim · model-written summary
2-AP retention during storage differed greatly between the two cultivars.
- Taxon
- indica riceOryza sativa Indica Groupe0
- Material
- Meixiangzhan 2 and Xiangyaxiangzhane0
- Outcome
- 2-AP retentione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two indica rice cultivars: Meixiangzhan 2 and Xiangyaxiangzhan”
e1“2-AP retention differed greatly in both cultivars”
Claim · model-written summary
Low temperature growth increased cooked rice elongation percentage and amylose biosynthesis in rice.
- Taxon
- indica riceOryza sativa Indica Groupe0
- Treatment
- low temperature growthe1
- Outcome
- cooked rice elongation percentage and the biosynthesis of amylosee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two indica rice cultivars: Meixiangzhan 2 and Xiangyaxiangzhan”
e1“low temperature growth increased cooked rice elongation percentage and the biosynthesis of amylose in rice”
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