Neglecting rice milling yield and quality underestimates economic losses from high-temperature stress.

ABSTRACT: Future increases in global surface temperature threaten those worldwide who depend on rice production for their livelihoods and food security. Past analyses of high-temperature stress on rice production have focused on paddy yield and have failed to account for the detrimental impact of high temperatures on milling quality outcomes, which ultimately determine edible (marketable) rice yield and market value. Using genotype specific rice yield and milling quality data on six common rice varieties from Arkansas, USA, combined with on-site, half-hourly and daily temperature observations, we show a nonlinear effect of high-temperature stress exposure on yield and milling quality. A 1 °C increase in average growing season temperature reduces paddy yield by 6.2%, total milled rice yield by 7.1% t

SUBMITTER: Lyman NB 

PROVIDER: S-EPMC3750041 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature