摘要
用６０Ｃｏγ－射线照射不同品系和形态的螺旋藻丝状体、结果表明：①低剂量可刺激生长，使盐泽螺旋藻（Ｓｓ）和钝顶螺旋藻（Ｓｐ）分别增产２６％和４％～１０％；②４种螺旋藻虽然都具有很强的抗辐射能力，但它们的辐射敏感性又因品系和形态的不同而存在显著差异：长直形的Ｓｐ－Ｌ＞长直形和弯曲形混合的Ｓｐ－Ｄ＞弯曲形的Ｓｐ－１＞Ｓｓ－Ｖ，在Ｓｐ－Ｄ中，长直形的藻丝体＞弯曲形的藻丝体；③螺旋藻在对辐射损伤进行修复的过程中，分裂繁殖能力明显下降，当藻丝体受到严重损伤且不可修复时，就会断裂变短，甚至解体；④得到了细胞宽大、低温下能良好生长的突变体．
Four kinds of different strain and morphological filaments of Spirulina were irradiated with 60 Co gamma rays The results indicated that: ① Low dose of γ rays could stimulated the growth of Spirulina The biomass of Spirulina Sabsalsa (Ss) and Spirulina plastensis (Sp) irradiated with low γ rays were increased 26% and 4%￣10%, respectively ② Generally, Spirulina is resistant to γ irradiation, but there were significant differences with various strains and morphologies The order of radiosensitivity is as following: linear Sp L>Mixed Sp D>Curved Sp 1>Ss V, and linear filaments>Curved filaments in Sp D ③ In the course of damage repairing caused by irradiation, the growth of Spirulina was almost stagnated And the filaments would break up or even disintegrate if the damage is severe ④ The mutants with spacious cells and resistant to low temperature were isolated
基金
浙江省自然科学基金
浙江农业大学人才基金
校科技发展基金
