世界范围内生物资源,特别是作物种质资源的遗传侵蚀,严重地威胁着人类社会的发展。许多学者指出,拥有农作物种质资源的数量及对其研究的广度和深度,是衡量一个国家的农业科学水平高低和发展速度的标 The worldwide erosion of biological resources, especially the germplasm of crop germplasm, is a serious threat to the development of human society. Many scholars pointed out that having the quantity of crop germplasm resources and the breadth and depth of their research is the measure of a country’s level of agricultural science and technology and the pace of development