【摘要】 采用能量为25keV的不同剂量(4×1016N+/cm2、6×1016N+/cm2、8×1016N+/cm2、12×1016N+/cm2)N+注入燕麦种胚,研究N+离子束注入后,盐胁迫对燕麦M1和M2代幼苗体内超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性,脯氨酸含量、丙二醛(MDA)含量、可溶性糖及可溶性蛋白含量的影响。实验结果表明:对M1代,以6×1016N+/cm2剂量处理燕麦较合适,能提高燕麦受盐胁迫影响后幼苗SOD活性和可溶性糖含量。而对M2代,4×1016N+/cm2处理剂量能降低MDA含量,提高可溶性糖含量,这都有利于盐胁迫后燕麦幼苗的生长。更多还原

【Abstract】 Embryos of Oat seed were implanted with different dosage of N⁺ at the energy of 25keV.The dosage ranged from 4×10¹⁶ N⁺/cm² to 12×10¹⁶ N⁺/cm².The effects on superoxide dismutase（SOD）,peroxidase（POD）,catalase（CAT） activities of M₁ and M₂ generation of Oat seedlings were studied,and contents of malondiadehyde（MDA）,prolin contents,soluble sugar and soluble protein contents were checked up under NaCl stress.The results showed that: As M₁ generation,it suggested that optimum dosage(6×10¹⁶ N⁺/cm²) of N⁺ ion beam implantation could raise superoxide dismutase（SOD） activity and soluble sugar contents,and promote seedlings of Oat to grow.But M₂ generation,optimum dosage of N⁺ ion beam implantation was 4×10¹⁶ N⁺/cm² which could brought down malondiadehyde（MDA） contents and improved soluble sugar contents,it were beneficial to grow seedlings of oat after NaCl stress.更多还原