国家牧草产业技术体系种质资源国际合作成效斐然

Core Insights - The article highlights the efforts of the Chinese Academy of Agricultural Sciences in enhancing the genetic diversity of grass species through international collaboration and resource collection [1][2][3] Group 1: Resource Collection and Collaboration - The research team has introduced over 7,442 grass germplasm resources, primarily sourced from abroad, significantly enriching China's grass germplasm repository [1] - A collaboration with the Vavilov Institute in Russia began in 2004, focusing on the introduction of high-biomass grass species [1] - The team has also imported over 2,000 grass resources from the USDA Plant Germplasm Resources, which are essential for molecular breeding [2] Group 2: Evaluation and Testing - Each new germplasm undergoes a rigorous three-year evaluation process, including greenhouse seedling growth observation, field trials in different ecological zones, and assessments of drought resistance and biomass [2] - A comprehensive evaluation report for each germplasm requires the accumulation of over 70 data points [2] Group 3: Application and Impact - The team has shared over 2,000 superior germplasm resources with more than ten domestic breeding teams, leading to the development of 12 new grass varieties [3] - These new varieties have been successfully promoted in major pastoral areas such as Inner Mongolia, Shandong, and Qinghai, enhancing local grassland productivity and livestock economic benefits [3] Group 4: Future Directions - The team aims to deepen international cooperation and innovation, focusing on the integration of germplasm resources with molecular breeding and information technology [3] - The initiative is expected to strengthen the core competitiveness of China's grass industry and support high-quality development in the livestock sector and national food security [3]