International Rice Research Institute

Underestimated rice yield risks from extreme cold in China

Despite global warming, intensifying extreme cold anomalies present a significant paradox for global food security. While heat-related risks are well-documented, the impact of extreme cold on crop yields remains a critical yet understudied vulnerability in climate change assessme...

Mapping global research on interactions of conventional, organic, and natural farming systems and soil health with respect to microbiomes and greenhouse gas emissions

Sustainable agricultural practices are receiving increasing scientific attention for their potential to mitigate climate change, support food production, and maintain long-term soil health. Conventional, organic, and natural farming systems differ substantially in management prac...

Trait syndromes governing rice genotypes adaptation and productivity under direct-seeded systems

In the context of declining water availability and rising labour costs, direct-seeded rice (DSR) is increasingly promoted as an alternative to puddled transplanted rice (PTR). We hypothesised that rice genotypes differ in their adaptation to DSR and PTR through coordinated trait...

Phenotypic and Saltol-based molecular characterization of rice germplasm under salinity stress at seedling stage

Abstract This study integrated phenotypic and molecular characterization to identify salinity-tolerant rice germplasm for breeding. A total of 231 rice genotypes were evaluated under hydroponic conditions using Yoshida’s nutrient solution. Salt injury score (SES), shoot length (S...

Intertemporal triangular spatiality of agglomeration-clustering-knowledge spillovers

Abstract This study develops and tests an Intertemporal Triangular Spatiality (ITS) framework to explain how agglomeration, clustering, and knowledge spillovers shape firm entry and location choice in emerging markets. Using Costa Rica’s Free Trade Zone regime as a policy-discont...

Evaluating the Resilience of Cold-Region Rice Varieties to Climate Variability and Change Using the BDH-Rice Model: A Case Study in the Sanjiang Plain

The Sanjiang Plain is a key cold-region rice production area in Northeast China, where climate variability and warming may alter the adaptability and yield stability of rice varieties. Identifying varieties with both high yield potential and stable performance under current and f...

Harnessing and utilizing Himalayan Nepalese speciality rice for food and nutritional security

Abstract This review synthesizes six decades of research on native Himalayan rice (NHR) (Oryza sativa) – encompassing cold-tolerant high-altitude landraces, drought-tolerant upland rice, Basmati, aromatic and glutinous varieties. The aims of the review were to assess NHR diversit...

Varietal development and rice yield growth in India: assessing IRRI’s germplasm contribution

This study analyzed the contribution of International Rice Research Institute (IRRI) improved germplasm to rice varietal development and yield growth in India. Out of the total of 1436 released high-yielding varieties (HYVs) of rice, 769 (53%) were developed using IRRI improved g...

A mechanistic model integrating multi‐source data for operational prediction of rice sheath blight at regional scale

Abstract BACKGROUND Rice sheath blight (RSB) is a destructive disease that causes significant yield losses globally. Accurate regional prediction is critical for sustainable disease management; however, existing models suffer from poor generalizability and limited operational app...