亚精胺对盐胁迫下杂交桑种子萌发的影响  

Effects of Exogenous Spermidine on Seed Germination of Hybrid Mulberry under Salt Stress

作　　者：周象海[1] 姜爱菊 盖翠霞 王照红[1] 娄齐年[1] 赵东晓[1] Zhou Xianghai;Jiang Aiju;Gai Cuixia;Wang Zhaohong;Lou Qinian;Zhao Dongxiao(Sericultural Research Institute of Shandong Province,Yantai 264002,China;Rural Economic Management Station of Guocheng Town,Haiyang City,Haiyang 265147,China;Nanshu Animal Health and Product Quality Supervision Station of Laixi City,Laixi 266600,China)

机构地区：[1]山东省蚕业研究所,山东烟台264002 [2]海阳市郭城镇农村经管站,山东海阳265147 [3]莱西市南墅动物卫生与产品质量监督站,山东莱西266600

出　　处：《山东农业科学》2020年第5期121-123,129,共4页Shandong Agricultural Sciences

基　　金：山东省现代农业产业技术体系蚕桑产业创新团队项目(SDAIT-18-09,SDAIT-18-02);烟台市科技计划项目(2018ZHGY059);山东省农业科学院农业科技创新工程项目(CXGC2018E20);国家蚕桑产业技术体系烟台综合试验站项目(CARS-22-SY212)。

摘　　要：以杂交桑桂优12号品种为材料,研究100 mmol/L NaCl胁迫下,0、0.5、1.0、1.5 mmol/L亚精胺(spermidine,Spd)对杂交桑种子发芽率、发芽势、发芽指数的影响。结果表明,100 mmol/L NaCl胁迫下,杂交桑种子的萌发受到显著抑制,发芽率、发芽势、发芽指数均显著降低。添加适宜浓度的Spd可有效缓解NaCl胁迫对杂交桑种子萌发的抑制,提高发芽率、发芽势和发芽指数;但浓度过高,反而加重NaCl胁迫的抑制作用,进一步降低杂交桑种子的各项萌发指标。综合来看,添加1.0 mmol/L Spd对促进盐胁迫下杂交桑种子萌发的效果最佳。The hybrid mulberry cultivar Guiyou 12 was used as material and the effects of(spermidine,Spd)with different concentrations(0,0.5,1.0 and 1.5 mmol/L)on its germination rate,germination vigor and germination index were studied under 100 mmol/L NaCl stress.The results showed that under 100 mmol/L NaCl stress,the germination of hybrid mulberry seeds was inhibited significantly with the germination rate,germination vigor and germination index decreased significantly.The addition of Spd at optimal concentration could effectively reduce the inhibition of NaCl stress to the germination of hybrid mulberry seeds.Low concentration of Spd could promote the germination of hybrid mulberry seeds,while high concentration of Spd could inhibit the germination.The effect of 1.0 mmol/L Spd was the best under this experiment conditions.

关 键 词：杂交桑 亚精胺 种子萌发 盐胁迫 

分 类 号：S888.2[农业科学—特种经济动物饲养]