Core Insights - China has made significant breakthroughs in breeding new high-yield rice varieties resistant to the rice planthopper, addressing the challenge of stable rice production [1] - The rice planthopper is identified as the primary pest in rice production in China, affecting over 300 million acres annually and causing a reduction of 3 billion pounds in rice yield [1] - The coverage rate of pest-resistant rice varieties in production is currently below 1% [1] Group 1: Research and Development - The breakthroughs were achieved with the support of the Agricultural Biotechnology Breeding Major Project, involving collaboration between Yuan Longping High-Tech Agriculture Co., Ltd. and leading domestic research teams [1] - A cooperative model of enterprise-science collaboration was established to innovate and apply molecular design breeding technology [1] - Key genes for resistance to the brown planthopper, rice blast disease, and nitrogen efficiency were precisely aggregated to develop new rice varieties [1] Group 2: New Varieties and Performance - New rice varieties such as "Wei Liang You 2268" and "Yang Xian You 4278" have been developed, showing significant resistance to the brown planthopper and rice blast disease [1] - Field trials indicate that these new varieties have increased yields by over 5% compared to control groups [1] - The "Wei Liang You 2268" variety achieved a record yield of 1,174.5 kg per mu in a demonstration plot in Hunan, setting a new high yield record for single-season rice in the middle and lower reaches of the Yangtze River [1] Group 3: Future Implications - The new varieties have been selected for inclusion in the 2025 National Crop Variety Promotion Directory as candidate varieties [1] - The accelerated promotion and application of these new varieties are expected to inject strong momentum into achieving high and stable rice production across China [1]

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]

Group 1 - The article highlights the advancements in corn breeding in China, showcasing the development of high-yield and resilient varieties like "Zhongyu 303" to meet increasing market demands [1][2] - The "Zhongyu 303" variety has shown significant improvements, with an increase in yield by 300-400 jin per mu compared to previous varieties, and has been widely adopted, covering 14.75 million mu in the past three years [2] - The article emphasizes the importance of seed innovation in agriculture, noting that corn is a critical crop with unique challenges due to its origins and the need for diverse genetic resources [2][3] Group 2 - The "14th Five-Year Plan" has accelerated the pace of seed industry innovation in China, with policies and technological advancements driving the development of new crop varieties [3][5] - The national agricultural germplasm resource survey initiated by the Ministry of Agriculture and Rural Affairs aims to enhance the understanding and utilization of agricultural resources, leading to the discovery of new varieties [3][4] - The article reports that over 95% of crop varieties in China are now independently bred, with notable achievements in various crops, including wheat, rice, and soybeans, contributing to national food security [6]

立秋刚过，山东乐陵寨头堡乡冢上村，玉米正值授粉期，乐义农作物种植专业合作社负责人闫乐义一大 早就在地里查看玉米长势、密度，了解抽雄授粉出穗等情况。 新华社记者古一平、胡璐 "这个品种耐盐碱、耐干旱，抗病抗倒伏能力强，虫害也不多，看样子今年也能有个好收成。"闫乐义告 诉记者，他从2021年起开始种植玉米新品种"中玉303"，这几年每亩地产量比以往多出三四百斤。 种子是农业的"芯片"。近年来，为更好满足持续增长的市场需求，我国重要农作物玉米涌现出越来越多 高产耐密植、优质宜机收新品种，生动展现了我国种业创新发展的坚实步伐。 国家玉米育种联合攻关秘书长、中国农业科学院作物科学研究所研究员王天宇告诉记者，曾几何时，我 国玉米"过硬"品种不多，加之近年异常气候频发，产量提升不稳定，经常受高温干旱等因素困扰。同时 玉米茎腐病和穗粒腐病等玉米的"癌症"也是厉害的"杀手"，直接影响到玉米产量和质量。 新华社北京8月13日电 题：解锁"芯片"密码 我国种业创新迈出坚实步伐 "努力攻关研究出耐盐碱、抗洪耐旱的玉米品种，解决农业生产实际问题，迫在眉睫。"他说。 与水稻、小麦等不同，玉米起源于美洲，我国玉米种质资源并不丰富，并且种植 ...