In order to determine the potential for haploid induction via in vitro gynogenesis in tomato, the ovules and protoplasts......

根据数字图像制备分析技术得到大孔隙数目、大小和形状等特征数据，用分形理论计算孔隙分形维数，并对两类不同质地土壤的孔隙分形维数......