Journal of Northern Agriculture ›› 2021, Vol. 49 ›› Issue (2): 11-16.doi: 10.12190/j.issn.2096-1197.2021.02.02

• Germplasm resources·Corp cultivation • Previous Articles     Next Articles

Evaluation of drought tolerance and salt tolerance of 16 maize varieties at germination stag

QIU Pengcheng1, MIAO Yongmao2, DU Yongchun1, CHANG Guoyou3, WU Yunxia4   

  1. 1. Ordos Academy of Agricultural and Animal Husbandry Sciences,Kangbashi 017000,China;
    2. Inner Mongolia Agriculture and Animal Husbandry Ecology and Resource Protection Center,Hohhot 010011,China;
    3. Dalad Banner Seed Management Station,Shulinzhao 014300,China;
    4. Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China
  • Received:2020-12-21 Online:2021-04-20 Published:2021-06-21

Abstract: 【Objective】The drought tolerance and salt tolerance of 16 maize varieties at germination stage were evaluated.【Methods】Five treatments including 15% PEG-6000 drought stress,20% PEG-6000 drought stress,220 mmol/L NaCl salt stress,300 mmol/L NaCl salt stress and control(water)were set up. The drought tolerance and salt tolerance of 16 maize varieties were evaluated by weighted membership function value method. The GGE map was used to distinguish the tolerance of varieties. At the same time,the similarity and discrimination ability of different stress treatments in variety evaluation were analyzed.【Results】The weighted membership function value method evaluation results showed that,Yidan 131 and Zhenjin 308 were drought tolerant and Yidan 81 was salt tolerant;the GGE map was used to distinguish different stress treatments,the results showed that 15% PEG-6000,20% PEG-6000 and 300 mmol/L NaCl were positively correlated. The comprehensive evaluation of drought tolerance and salt tolerance of 16 maize varieties showed drought tolerance:Yidan 131,Yidan 81 and Zhenjin 308,and salt tolerance:Yidan 81,Yidan 507 and Shengfeng silage No.2.【Conclusion】Yidan 131 was a drought tolerant maize variety,and Yidan 81 was a drought and salt tolerant maize variety.

Key words: Maize variety, Germination stage, Drought tolerance, Salt tolerance, Comprehensive evaluation

CLC Number: 

  • S513