Evaluation of physiological responses and salt tolerance to salt stress in four buckwheat varieties
[Objective]To study the physiological response and tolerance of different buckwheat variet-ies to salt stress.[Method]Ding tian qiao No.1,Gu qiao No.1,Gui tian qiao No.2,and Ding tian qiao No.3 were used as material.Potting test by NaCl stress using clean water as a control(CK),growth amount(plant height),germination rate,survival rate,proline content,soluble sugar(SS)content,super-oxide dismutase(SOD)activity,peroxidase(POD)activity,malondialdehyde(MDA)content,chloro-phyll content and other indicators were determined.Principal component analysis and membership function method were used to comprehensively evaluate its salt resistance.[Result]NaCl stress significantly af-fected seed germination,seedling growth and development,and physiological and biochemical responses of buckwheat.The salt resistance of the four buckwheat varieties was,in order:Gui tian qiao No.2>Ding tian qiao No.1>Ding tian qiao No.3>Gu qiao No.1,among them,Gui tian qiao No.2 suffered the lightest and had the strongest salt resistance,Gu qiao No.1 is the most severely affected and the salt resis-tance is the weakest.[Conclusion]This paper provides some theoretical basis for the selection of buck-wheat varieties to be grown in saline-alkali areas.
salt stressbuckwheatphysiological and biochemicalmembership functions
万方数据
维普
