碱胁迫对结缕草、高羊茅种子萌发及其胚生长的影响

Seed(2010)

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Abstract
用NaHCO3和Na2CO3两种碱性盐以9∶1的摩尔比配制浓度分别为30、60、90、120 mmol/L的混合盐溶液作为碱胁迫处理液,对结缕草和高羊茅种子进行碱胁迫发芽试验。结果表明,在碱胁迫下,结缕草和高羊茅种子的发芽率、发芽势、发芽指数以及胚芽长和胚根长均随着碱胁迫浓度的升高而呈降低趋势,碱浓度达到90 mmol/L和120 mmol/L时,相应的结缕草和高羊茅种子均未萌发;结缕草和高羊茅种子萌发耐碱性的临界值分别为30 mmol/L和60 mmol/L;高羊茅种子萌发的耐碱性强于结缕草。
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Key words
Zoysia japonica,Festuca arundinacea,seed germination,alkaline stress
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