镉胁迫下茉莉酸甲酯对水稻氮代谢的影响  

Effects of Growth Regulator Meja on Nitrogen Metabolism in Rice under Cadmium Stress

作　　者：曾晶[1] 荣湘民[1] 张振华[1] 刘德明[1] 周涌[1] ZENG Jing;RONG Xiang-min;ZHANG Zhen-hua;LIU De-ming;ZHOU Yong(Hunan Agricultural University,Changsha 410128,PRC)

机构地区：[1]湖南农业大学

出　　处：《湖南农业科学》2019年第12期22-25,共4页Hunan Agricultural Sciences

基　　金：湖南省教育厅科研一般项目(15C0665);湖南省研究生科研创新项目(CX2014B292);湖南农业大学青年科学基金项目(09QN01)

摘　　要：以氮高效耐低氮水稻品种C156和氮敏感品种C111为试验材料,分析植株地上、地下部生物量、总吸氮量、硝态氮含量等指标,研究了镉胁迫条件下茉莉酸甲酯(MeJA)对水稻生长发育、NO3-分配的影响。结果表明:在镉胁迫条件下水稻苗期的硝态氮更多的分配到了根部,增强了作物的抗逆性。70μmol/L浓度是个分界点,可选择浓度为70μmol/LMeJA作为后期的研究材料。MeJA在镉胁迫条件下可提高C156品种的生物量和总吸氮量,但效果不显著,其可显著提高C111品种基于生物量的NUE。Taking high nitrogen efficiency and low nitrogen tolerance C156 and C111 rice varieties as materials,the above ground and underground biomass,total nitrogen uptake,nitrate nitrogen content and other indicators,the effects of methyl jasmonate on the growth,development and NO3-distribution of rice under cadmium stress were studied.The results showed that under cadmium stress,the nitrate nitrogen of rice seedlings distributed more to the roots,which enhanced the stress resistance of crops.The concentration of methyl jasmonate at 70μmol/L is a boundary line,and the methyl jasmonate at 70μmol/L can be selected as the later research material.Methyl jasmonate can increase the biomass and total nitrogen uptake of C156 under cadmium stress,but the effect is not significant.It can significantly improve the NUE based on biomass of C111.

关 键 词：茉莉酸甲酯 硝态氮 镉 氮效率 

分 类 号：S511.01[农业科学—作物学]