Current Status and Future Prospects of Head Rice Yield

Fawad Ali (), Abdulqader Jighly, Reem Joukhadar, Nabeel Khan Niazi and Fahad Al-Misned
Additional contact information
Fawad Ali: Centre of Planetary Health and Food Security, Griffith University, Nathan Campus, Brisbane, QLD 4111, Australia
Abdulqader Jighly: Agriculture Victoria, DJPR AgriBio Centre, 5 Ring Rd., Bundoora, VIC 3083, Australia
Reem Joukhadar: Agriculture Victoria, DJPR AgriBio Centre, 5 Ring Rd., Bundoora, VIC 3083, Australia
Nabeel Khan Niazi: Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad 38040, Punjab, Pakistan
Fahad Al-Misned: Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia

Agriculture, 2023, vol. 13, issue 3, 1-21

Abstract: Global warming poses a serious threat to food security because of its impacts on thermosensitive food crop production. Rice is of paramount significance due to the world’s three-billion-population dependence on it as a staple food. It is well established that the high temperatures at day or night times during the grain-filling period can reduce rice grain yield, although the intriguing impact of high temperatures on head rice yields (HRY) is poorly discussed. This is because high and stable HRY is vital to meet the demand for rice grain, which is a staple food for many developing and developed nations. Hence, identifying the novel heat-tolerant rice germplasm with higher head rice yields may help mitigate a critical problem threatening global food security resulting from climate change. This review addresses the key factors, including pre-and-post-harvest scenarios related to overall reductions in the HRY and how grain molecular composition can play a significant role in determining head rice yields. Moreover, the underlying genetics of head rice is discussed as and possible mechanism to breach the complexity of HRY before identifying the key alleles and genomic regions related to the reduction in the HRY. Future research should focus on understanding the mechanisms of tolerating heat stress in rice by combining modern statistical, physiological, and molecular techniques to increase HRY. This may include high-throughput phenotyping techniques, mapping quantitative loci affecting HRY loss processes and genomic prediction using a broad wild and cultivated rice germplasm.

Keywords: climate change; high temperatures; rice; head rice yields; agronomy; soil moisture; pre-and-post harvest factors; physiology; grain molecular composition and quantitative genetics (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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