Comparative analysis of drought resistance in five oat varieties during seed germination
WANG Huiwen
JI Lei
WANG Hai
DA Buna
SUN Fan
WU Jingjie
JIN Jingwei
KONG Lingqi
Abstract：This study aimed to investigate the germination characteristics of different oat varieties under simulated drought conditions.Using five oat varieties as experimental materials,drought stress was simulated with polyethylene glycol-6000(PEG-6000)solutions at concentrations of 0(control),5%,10%,15%,and 20%.On the 10th day of germination,germination rate,germination potential,root length,shoot length,and dry weight were measured,and germination index,germination vigor index,and vigor index were calculated.Correlation and subordinate function analyses were performed on the major germination traits.The results showed that under 5%PEG-6000 stress,the germination rate and vigor index of Mengnong No.2 were significantly higher than those of other varieties(P<0.05).The germination index of both Mengnong No.2 and Mengnong No.1 were significantly higher than those of other varieties(P<0.05),and the germination vigor index of Mengnong No.1 was significantly higher than that of other varieties(P<0.05).Under 10%PEG-6000 stress,the germination potential,germination index,and germination vigor index of Mengnong No.1 were significantly higher than those of other varieties(P<0.05).Under 15%PEG-6000 stress,the germination index of Mengnong No.2 was significantly higher than that of other varieties(P<0.05),while the germination potential and vigor index of Mengnong No.1 were significantly higher than those of other varieties(P<0.05).Under 20%PEG-6000 stress,the germination rate,vigor index,and germination index of Mengnong No.2 were significantly higher than those of other varieties(P<0.05),and the root dry weight of Mengnong No.1 was significantly higher than that of other varieties(P<0.05).The comprehensive drought resistance evaluation value of five varieties was:Mengnong No.1>Mengnong No.2>Richard>Qinghai sweet oat>Line 7-3-8.The study shows that Mengnong No.1 and Mengnong No.2 exhibit strong drought resistance during the germination stage.
Keywords：oatseed germinationdrought resistancesubordinate function
Publication Date：2026-01-28
Online Publishing Date：2026-03-20(First online date of this platform, not the publication date of the document)
Pages：6( 65-70 )