High risk of the formation of milky white rice kernels in cultivars with higher potential grain growth rate under elevated temperatures

Tohru Kobata, Norihiko Miya, Nguyen Thi Anh

Research output: Contribution to journalArticle

5 Citations (Scopus)

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 languageEnglish
Pages (from-to)359-364
Number of pages6
JournalPlant Production Science
Volume14
Issue number4
DOIs
Publication statusPublished - Sep 30 2011

Keywords

  • Cultivar
  • High temperature
  • Milky white rice kernel
  • Rice
  • Solution culture

ASJC Scopus subject areas

  • Agronomy and Crop Science

Fingerprint Dive into the research topics of 'High risk of the formation of milky white rice kernels in cultivars with higher potential grain growth rate under elevated temperatures'. Together they form a unique fingerprint.

  • Cite this