Preflowering Abortion Reduces Spikelet Number in Upland Rice (Oryza sativa L.) under Water Stress

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Effective use of water (EUW) and not water-use efficiency (WUE) is the target of crop yield improvement under drought stress (2009, background): “Therefore, irrespective of biomass production up to flowering, sustained WU and T into the reproductive growth stage is crucial for reproductive success (e.g. Merah, 2001; Kato et al., 2008).”
WATER DEFICIT STRESS IN THE REPRODUCTIVE STAGE OF FOUR INDICA RICE (ORYZA SATIVA L.) GENOTYPES (2010, background): “The flowering stage of rice has been reported as being sensitive to stress which can lead to disruption of developmental processes and pollen and ovule abortion, causing sterility of spikelets and reduction of yield (Kato et al., 2008).”
Rice Adaptation to Aerobic Soils: Physiological Considerations and Implications for Agronomy (2014, background): “Although young panicle formation is very sensitive to drought stress during the early reproductive growth stage (Kato et al., 2008), Kato et al. (2009a) found that when the soil was mostly near field capacity, the number of spikelets culture, but vigorous N uptake is more likely to lead to…”