【摘要】 采用能量为25keV的N+不同剂量(2×1016 N+/cm2、4×1016 N+/cm2、6×1016 N+/cm2、8×1016 N+/cm2、12×1016 N+/cm2)注入新疆小麦种子,研究了N+离子束注入新疆春小麦种子后对小麦种子的发芽率、幼苗体内的丙二醛(MDA)、可溶性蛋白、可溶性糖、叶绿素、超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)的影响。实验结果表明:以2×1016 N+/cm2 剂量处理小麦较合适,可提高小麦种子的活力,促进种子萌发和幼苗生长。2×1016 N+/cm2、4×1016 N+/cm2 剂量处理对新春2号、新春11号幼苗生长有利,在这两种剂量处理下新春2号三种保护酶较新春11号敏感。更多还原

【Abstract】 Embryos of spring wheat seed were implanted by N⁺ at the energy of 25keV.The fluence ranged from 2×10¹⁶ N⁺/cm² to 12×10¹⁶ N⁺/cm².The effects on germination rate,malondiadehyde（MDA）,chlorophyl content,soluble protein,soluble sugars,superoxide dismutase（SOD）,peroxidase（POD） and catalase（CAT） were studied.The results showed that:It suggested that optimum dosage(2×10¹⁶ N⁺/cm²) of N⁺ ion beam implantation could enhance seed vigor and improve the germination and growth in wheat.Three protective enzymes （SOD,CAT,POD） of Xinchun 2 was more sensitive to two dosages (2×10¹⁶ N⁺/cm²,4×10¹⁶ N⁺/cm²) of N⁺ ion beam implantationthan Xinchun 11.更多还原