Researchers at the Yunnan University in China have developed a variety of perennial rice named PR23. by cross-breeding regular annual rice Oryza sativa with a wild perennial variety from Africa.
Key points
- PR23 is developed by cross-breeding regular annual rice Oryza sativa with a wild perennial variety from Africa.
- Unlike regular rice which is planted every season, PR23 can yield eight consecutive harvests across four years as these plants with stronger roots grow back vigorously after each harvest.
- Growing PR23 is much cheaper since it requires less labour, seeds and chemical inputs.
- According to the research findings reported in the journal Nature Sustainability in November 2022, growing perennial rice over a period of four years resulted in remarkable environmental benefits such as soils accumulating close to a ton of organic carbon (per hectare per year) along with increases in water available to plants.
- The perennial varieties were preferred by farmers since it saved 58% in labour and 49% in other input costs, over each regrowth cycle.
- The researchers claim it can transform farming by improving livelihoods, enhancing soil quality and by inspiring research on other grains.
(Source: The Mint)
