摘要
[目的]探究不同品种宁夏枸杞(Lycium barbarum)种子的耐锂性强弱.[方法]采用氯化锂(LiCl)溶液模拟锂环境,研究11份宁夏枸杞种子的发芽势、发芽率、发芽指数、芽长、根长和活力指数,并利用隶属函数法对其耐锂性进行综合评价.[结果]宁杞7号、宁农杞1号、宁农杞9号、14-401NM和16-23-8-10的发芽率随着锂浓度的增加呈现先升高后下降的趋势,低浓度的锂对种子的萌发有促进作用,枸杞对锂有一定的耐性.14-4-4-16品种虽然不存在上述的变化趋势,但发芽率在任意浓度下都高于其他品种,且在高浓度下也保持着高的萌发率.综合评价各品种排名顺序为:14-401NM>14-4-4-13>16-23-8-10>宁农杞 2号>宁农杞 1号>16-23-7-8>宁农杞 9号>宁杞5号>宁杞1号>14-16>宁杞7号.[结论]14-401NM、14-4-4-13和16-23-8-10综合隶属排名较高,耐锂性相对较强.
Abstract
[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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