【摘要】 采用土培、砂培等方法,利用高粱-苏丹草杂交种,研究耐盐性杂种优势.结果表明,在盐(NaCl)胁迫下,杂种的发芽率、出苗率、幼苗成活率、生长速率等均优于亲本,存在明显的杂种优势,但杂种间有差异.而相对电导率及丙二醛含量则存在负向优势.研究中还发现,种子萌发期比苗期耐盐性强.更多还原

【Abstract】 The heterosis of salt tolerance for sorghum ×Sudangrass hybrid was studied through soil culturing and sand culturing methods. The results indicated that apparent heterosis existed in seed germination rate, emergence rate, seedling survival rate, growth rate under NaCl stress, the hybrid with advantages over the parents, but which varied with different hybrids, while hybrid weakness existed in relative conductance rate and MDA content. The salt tolerance of the hybrid during seed germination was better than seedling stage.更多还原