Core Insights - China has made significant breakthroughs in breeding high-yield rice varieties resistant to the rice planthopper, addressing the challenge of stable rice production [2] - The rice planthopper is identified as the primary pest in China's rice production, affecting over 300 million acres annually and causing a reduction of 3 billion jin in rice yield [2] - The coverage rate of resistant rice varieties in production is currently below 1% [2] Group 1 - The "Weiliangyou 2268" and "Yangxianyou 4278" rice varieties have been developed through a collaborative model involving leading research teams and innovative molecular design breeding technology [2] - These new varieties exhibit significant resistance to both the brown planthopper and rice blast disease, with trial yields exceeding 5% compared to control groups [2] - The "Weiliangyou 2268" variety achieved a record yield of 1174.5 kg per mu in Hunan, setting a new high for single-season rice in the Yangtze River mid-lower region [2] Group 2 - The newly developed rice varieties have been included in the 2025 National Crop Excellent Variety Promotion Directory as candidate varieties [2] - The accelerated promotion and application of these new varieties are expected to inject strong momentum into achieving high and stable rice production across China [2]