Comprehensive evaluation of lithium tolerance of seeds of different Lycium barbarum cultivars
[Objective]To investigate the lithium tolerance of different Lycium chinense seeds.[Method]The germination potential,germination rate,germination index,bud length,root length and vitality index of 11 L.bar-barum seeds were studied by using LiCl solution to simulate lithium environment.The lithium tolerance was evalu-ated by membership function method.[Result]The germination rates of Ningqi No.7,Ningnongqi No.1,Ningnon-gqi No.9,14-401NM and 16-23-8-10 increased first and then decreased with the increase of concentration.Low concentration of lithium could promote seed germination,and L.barbarum had a certain tolerance to lithium.Al-though the 14-4-4-16 varieties did not have the above change trend,the germination rate was higher than that of other varieties at any concentration,and also maintained a high germination rate at high concentration.Therefore,through comprehensive evaluation,the ranking order was as follows:14-401NM>14-4-4-13>16-23-8-10>Ningnongqi 2>Ningnongqi 1>16-23-7-8>Ningnongqi 9>Ningqi 5>Ningqi 1>14-16>Ningqi 7.[Conclusion]14-401NM,14-4-4-13 and 16-23-8-10 have higher comprehensive affiliations and relatively strong lithium resistance.This study can provide theoretical basis for the remediation of lithium polluted soil by L.barbarum.
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