Abstract
Our objective was to clarify whether rice cultivars with a higher grain dry-matter increase rate (GIR) under elevated temperature condition show a higher percentage of milky white rice kernels (MWK). The rate of MWK judged using a rice-quality selector signifi cantly varied with the cultivar and experimental year. The spikes of the cultivars detached 5-7 days after heading were solution-cultured with an adequate nutrient supply for one week at 25, 28 and 33°C. GIR was overall the highest at 28°C, and GIR at this temperature was considered to refl ect the potential GIR in all the grains tested. There was a close correlation between the rate of MWK and the GIR at 28°C under fi eld conditions when temperatures during the grain-fi lling period were approximately over 25°C. It was suggested that cultivars with a higher potential GIR under elevated temperature conditions have a higher risk of the formation of MWK.
| Original language | English |
|---|---|
| Pages (from-to) | 359-364 |
| Number of pages | 6 |
| Journal | Plant Production Science |
| Volume | 14 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Sep 30 2011 |
| Externally published | Yes |
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Keywords
- Cultivar
- High temperature
- Milky white rice kernel
- Rice
- Solution culture
ASJC Scopus subject areas
- Agronomy and Crop Science
Cite this
High risk of the formation of milky white rice kernels in cultivars with higher potential grain growth rate under elevated temperatures. / Kobata, Toru; Miya, Norihiko; Anh, Nguyen Thi.
In: Plant Production Science, Vol. 14, No. 4, 30.09.2011, p. 359-364.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - High risk of the formation of milky white rice kernels in cultivars with higher potential grain growth rate under elevated temperatures
AU - Kobata, Toru
AU - Miya, Norihiko
AU - Anh, Nguyen Thi
PY - 2011/9/30
Y1 - 2011/9/30
N2 - Our objective was to clarify whether rice cultivars with a higher grain dry-matter increase rate (GIR) under elevated temperature condition show a higher percentage of milky white rice kernels (MWK). The rate of MWK judged using a rice-quality selector signifi cantly varied with the cultivar and experimental year. The spikes of the cultivars detached 5-7 days after heading were solution-cultured with an adequate nutrient supply for one week at 25, 28 and 33°C. GIR was overall the highest at 28°C, and GIR at this temperature was considered to refl ect the potential GIR in all the grains tested. There was a close correlation between the rate of MWK and the GIR at 28°C under fi eld conditions when temperatures during the grain-fi lling period were approximately over 25°C. It was suggested that cultivars with a higher potential GIR under elevated temperature conditions have a higher risk of the formation of MWK.
AB - Our objective was to clarify whether rice cultivars with a higher grain dry-matter increase rate (GIR) under elevated temperature condition show a higher percentage of milky white rice kernels (MWK). The rate of MWK judged using a rice-quality selector signifi cantly varied with the cultivar and experimental year. The spikes of the cultivars detached 5-7 days after heading were solution-cultured with an adequate nutrient supply for one week at 25, 28 and 33°C. GIR was overall the highest at 28°C, and GIR at this temperature was considered to refl ect the potential GIR in all the grains tested. There was a close correlation between the rate of MWK and the GIR at 28°C under fi eld conditions when temperatures during the grain-fi lling period were approximately over 25°C. It was suggested that cultivars with a higher potential GIR under elevated temperature conditions have a higher risk of the formation of MWK.
KW - Cultivar
KW - High temperature
KW - Milky white rice kernel
KW - Rice
KW - Solution culture
UR - http://www.scopus.com/inward/record.url?scp=80053206490&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80053206490&partnerID=8YFLogxK
U2 - 10.1626/pps.14.359
DO - 10.1626/pps.14.359
M3 - Article
AN - SCOPUS:80053206490
VL - 14
SP - 359
EP - 364
JO - Plant Production Science
JF - Plant Production Science
SN - 1343-943X
IS - 4
ER -