【摘要】 选用4个斑茅杂交BC2品系及其亲系共12个品种(品系)为试验材料,在大田条件下研究了这些试验材料之间的一些生理生化性状的差异。结果表明,斑茅BC2品系的叶片酸性转化酶活性和酸性转化酶活性/中性转化酶活性、叶绿素含量、叶片细胞质膜相对透性、叶片的束缚水含量和束缚水/自由水含量均高于斑茅BC1品系,表明这些性状在回交过程中得到了改良;但在叶片的丙二醛含量、硝酸还原酶活性、过氧化物歧化酶活性方面,BC2品系却不及其BC1杂交亲本,表明这些性状在回交过程中逐渐被削弱;而叶片的可溶性蛋白质含量、还原糖含量、脯氨酸含量、过氧化氢酶和过氧化物酶却出现分离,但以YCE01-48为亲本的BC2亲系YCE03-267和YCE03-268在这些指标上均优于其BC1亲本。更多还原

【Abstract】 An experiment was conducted with 12 varieties(or lines) of E.arundinaceus including four BC2 lines and eight recurrent parents under field condition.The differences of the main physiological and biochemical characters among these 12 varieties(or lines) were studied.The results showed that the activity of acid invertase,ratio of activity of acid invertase to neutral invertase,chlorophyll content,permeability of cell cytoplasm membrane,bound water content,and ratio of bound water to free water content in leaves in BC2 lines were higher than those in their female parents(BC1 lines),indicating these characters were improved in the course of backcross;the malondialdehyde content,activity of nitrate reductvase,and superoxide dismutase content in leaves in all the BC2 lines were less than those in their female parents(BC1 lines),indicating these characters declined in the course of backcross;the soluble protein content,reducing sugar content,praline content,catalase content and peroxidase content in leaves in BC2 lines vary with each other,but these characters of YCE03-267 and YCE03-268(2 BC2 lines) derived from YCE01-48(BC1 line) were superior to those of their BC1 parents.更多还原