干旱与盐胁迫对玉米杂交种萌发及幼苗生长的影响  

Effects of Drought and Salt Stress on Seed Germination and Seedling Growth of Maize Hybrids

作　　者：塔伊尔·买买提江 兰海燕[1] 王长海 Maimaitijiang Tayier;LAN Haiyan;WANG Changhai(Xinjiang Key Laboratory of Biological Resources and Genetic Engineering,School of Life Science and Technology,Xinjiang University,Urumqi Xinjiang 830046,China;Join Hope Seed Co.,LTD.,Changji Xinjiang 831113,China)

机构地区：[1]新疆大学生命科学与技术学院,新疆生物资源基因工程重点实验室,新疆乌鲁木齐830046 [2]九圣禾种业股份有限公司,新疆昌吉831113

出　　处：《新疆大学学报（自然科学版）（中英文）》2021年第1期61-68,共8页Journal of Xinjiang University(Natural Science Edition in Chinese and English)

基　　金：国家自然科学基金项目(31660068);新疆维吾尔自治区重大科技专项(2018A01001);新疆维吾尔自治区重点实验室开放课题(2016D03015)。

摘　　要：为探讨干旱和盐渍环境对玉米生长早期的影响,采用PEG6000处理模拟干旱胁迫、NaCl处理模拟盐胁迫,对种植于新疆、山西及东北地区的6种玉米杂交种进行种子萌发及幼苗生长实验.结果表明:随着PEG或NaCl浓度的升高,萌发指标及幼苗生长指标均受到抑制.NaCl对玉米种子萌发及主根伸长的抑制作用比PEG的强,低浓度的PEG促进玉米种子主根的生长.以种子萌发指标及幼苗生长指标衡量,6种玉米杂交种对胁迫的抗性由强到弱顺序为:新玉110>新玉47>九玉J03>KWS2564>九圣禾2468>新玉80.综上所述,干旱、盐胁迫使玉米萌发和幼苗生长受到不同程度抑制,但不同杂交种的敏感性不同.The objective of the present study is to clarify the effect of drought and salt on the early growth of seed and seedling of maize hybrid,which may provide theoretical evidence for maize production.In the present study,the effects of salt(NaCl)and simulated drought(PEG6000)on seed germination and seedling growth of six maize hybrids were studied.The results showed that with the increasing of NaCl and PEG concentrations,the germination and seedling growth indices were reduced,and the inhibitory effect of NaCl on germination and main root length was stronger than that of PEG.The lower concentration of PEG promoted the growth of main roots of seedlings.According to seed germination and seedling growth indices,the order of stress tolerance of six maize hybrids were ranked from stronger to weaker as:XY110>XY47>JYJ03>KWS2564>JSH2468>XY80.In conclusion,drought or salt stress inhibited maize seed germination and seedling growth to some extent,however,different hybrids presented diverse sensitivities,our results will provide reference for maize production and development of stressresistant varieties in the future.

关 键 词：玉米 杂交种 干旱和盐胁迫 种子萌发 幼苗生长 

分 类 号：S565.9[农业科学—作物学]