Core Insights - The research team from the Chinese Academy of Agricultural Sciences has developed a high-accuracy genomic prediction model for rapeseed, integrating 404 global rapeseed resources, which provides efficient "precise navigation" for target breeding related to flowering time, oil content, and yield [1][2] - Traditional breeding methods for rapeseed take up to 6 years, which is insufficient to meet the urgent demand for high-quality varieties in agricultural production [1] - The new model has achieved over 90% prediction accuracy for flowering time and thousand-grain weight, and over 83% for oil content and pod length, significantly enhancing the prediction accuracy for complex traits [1] Industry Impact - The integration of genomic data and artificial intelligence algorithms with the genomic prediction model has led to a rapid breeding technique, reducing the breeding cycle from 6 years to 4 years [2] - The varieties bred using this model can establish a unique "gene ID," enabling full-process gene traceability from breeding to production, thus providing a foundational guarantee for the high-quality development of the rapeseed industry [2]

在模式植物拟南芥和油菜中进行的功能验证显示，当BnaC01.CCT8发生突变时，角果长度和种子重量显 著降低，而过量表达该基因则能显著促进角果和种子发育。"这就像给油菜安装了增产'开关'。"顿小玲 说。 目前，该团队基于BnaC01.CCT8优异等位基因，开发了相关分子标记辅助选择技术，并与杂交育种、基 因组选择等技术结合，培育出多个高产油菜新品系。这些品系在长江流域和黄淮地区的多点试验中表现 稳定，预计将为我国油菜产业提质增效提供有力支撑。（记者马爱平） "角果长度和种子重量是决定油菜产量的核心农艺性状，但长期以来，调控这两个性状的关键基因及其 作用机制尚不明确。"论文通讯作者、中国农业科学院油料作物研究所研究员顿小玲告诉科技日报记 者，研究人员通过化学诱变技术获得了角果变短、种子变轻的突变体，并利用图位克隆技术，历经5年 系统研究，成功锁定了调控油菜产量的关键基因BnaC01.CCT8。 油菜是我国第一大油料作物，其年产油量占国产油料作物总产油量的50%以上，油菜产量的提升直接关 系国家粮油安全。记者7月28日从中国农业科学院油料作物研究所获悉，该所油菜遗传育种创新团队首 次揭示了分子伴侣基因BnaC01 ...

Core Viewpoint - The development of new high-yield and high-oil rapeseed varieties is crucial for enhancing the rapeseed industry and promoting rural revitalization in China [1][3]. Group 1: Event Overview - The 2025 Yangtze River Delta (Zhejiang) Rapeseed New Variety Conference was held in Hangzhou, focusing on the demonstration and promotion of new rapeseed varieties and technologies [1]. - The conference showcased 80 new rapeseed varieties, including 34 national high-yield and high-oil varieties, and 30 provincial advantageous varieties, all with an oil content of over 46% [2]. Group 2: Innovations and Developments - The event featured 10 short growth period varieties, with the shortest being 174 days, and 6 varieties that combine ornamental and economic value [2]. - Intelligent equipment such as blanket seedling transplanting machines, pneumatic seeders, and drones were displayed, along with processed rapeseed products and cultural derivatives [2]. Group 3: Future Directions - The conference aims to continue promoting high-yield and economically viable rapeseed varieties to support rural revitalization efforts [3]. - The event has been held for three consecutive years, showcasing innovative results and promoting diversified development and extension of the rapeseed industry [3].

Core Viewpoint - The development of the new rapeseed variety "Zhongyouza 501" represents a significant achievement in China's oilseed breeding sector, showcasing high yield and oil content, which is crucial for enhancing domestic edible oil supply security [2][3]. Group 1: New Variety Development - "Zhongyouza 501" was cultivated by a team led by Academician Wang Hanzhong over ten years, achieving an average oil content of 50.38% and a yield of 107.35 kg per mu, surpassing the control by 26.93% [2]. - The variety set new yield records in multiple regions, including 419.95 kg per mu in Hubei and 303.8 kg per mu in Jiangsu, demonstrating its resilience and high productivity under adverse conditions [2][3]. Group 2: Technological Innovations - The "Late Sowing Double Density Double High" technology, developed alongside "Zhongyouza 501," allows for delayed sowing past October 10, mitigating risks associated with early sowing and enhancing yield stability [3][4]. - This technology integrates high-density mechanized precision sowing, nutrient release fertilization, and comprehensive disaster prevention measures, supporting the expansion of rapeseed cultivation and yield improvement [3][4]. Group 3: Industry Support and Outreach - The Chinese Academy of Agricultural Sciences has established an expert team to provide extensive technical support across major rapeseed-producing provinces, conducting over 500 technical service sessions and training more than 58,000 individuals [4]. - The initiative aims to promote the adoption of high-yield varieties and innovative cultivation techniques, significantly impacting local agricultural productivity and contributing to national edible oil supply stability [4].