二氢卟吩铁调控玉米幼苗生长及耐盐性  

Effect of iron dihydroporphine on the growth and salt resistance of maize seedlings

作　　者：郭思思 任春梅[1] 李硕[1] 程兆榜[1] 王海涛 季英华[1] GUO Sisi;REN Chunmei;LI Shuo;CHENG Zhaobang;WANG Haitao;JI Yinghua(Institute of Plant Protection,Jiangsu Academy of Agricultural Sciences/Key Laboratory of Food Quality and Safety of Jiangsu Province,Nanjing 210014,China;College of Plant Protection,Fujian Agriculture and Forestry University,Fuzhou 350002,China)

机构地区：[1]江苏省农业科学院植物保护研究所/江苏省食品质量安全重点实验室,江苏南京210014 [2]福建农林大学植物保护学院,福建福州350002

出　　处：《江苏农业学报》2025年第3期485-492,共8页Jiangsu Journal of Agricultural Sciences

基　　金：江苏省农业科技自主创新基金项目[CX(21)1011];国家自然科学基金项目(32001871)。

摘　　要：研究作物壮苗和耐盐性对于提高产量和增强抗逆性具有重要意义。二氢卟吩铁可以调控多种作物生长,然而关于二氢卟吩铁能否调控玉米幼苗生长及耐盐性尚不明确。本研究发现,玉米种子浸泡在0.050μg/mL二氢卟吩铁溶液中24 h,能显著提高玉米幼苗的主根长度、根数和芽长等生长指标;0.050μg/mL二氢卟吩铁溶液的最佳浸种时间为12 h。叶面喷施0.200μg/mL二氢卟吩铁溶液可显著提高玉米苗期叶片的叶绿素含量。此外,经过二氢卟吩铁浸种处理后,可显著调控耐盐相关基因的表达从而提高玉米幼苗的耐盐性。本研究结果对于二氢卟吩铁在调控玉米幼苗生长方面的应用、提高玉米的耐盐性具有一定的指导意义。Studies on robust seedlings and salt tolerance of seedlings are crucial for increasing crop yield and enhancing stress resistance.Iron dihydroporphine(ICE6)is a novel plant growth regulator that can modulate the growth of various crops.However,the potential role of ICE6 in regulating maize growth and salt tolerance remains unknown.In this investigation,it was found that by soaking the maize seeds with 0.050μg/mL ICE6 solution for 24 hours,growth indices such as length of main root,number of roots and length of bud of maize seedlings could be significantly increased compared to other concentrations tested.The optimal soaking time with 0.050μg/mL ICE6 was 12 h.Additionally,leaf surface spraying with 0.200μg/mL ICE6 could significantly increase the chlorophyll content in maize leaves in the seedling stage of maize.Furthermore,our findings indicated that ICE6 treatment could substantially improve the salt resistance related genes expression and then promote the salt tolerance of maize seedlings.The study results have certain guiding significance on the regulatory effects of ICE6 on maize seedling growth and salt tolerance enhancement.

关 键 词：二氢卟吩铁 玉米 叶绿素含量 耐盐性 植物生长调节剂 

分 类 号：S513[农业科学—作物学]