黑果枸杞对NaCI处理的生长及生理响应

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中图分类号 S-3 文献标志码A 文章编号 1007-7731（2026）05-0028-07

DOI号 10.16377/j.cnki.issn1007-7731.2026.05.007

Growth and physiological response to NaCl treatment in Lycium ruthenicum

Hu JingZhang Yinghua（Gansu Desert Control Research Institute，Lanzhou 73OO7O， China）

AbstractLyciumruthenicum is a xerophytic specieswith excellent adaptability to adverseenvironments.To reveal thegrowth and physiological responseof L.ruthenicumunder NaCltreatment，the seed germination，seedling growth （cotyledon diameter，hypocotyl and radicle length，fresh weight，dry weight，relative growth rate）， K+ and Na+ content，osmoticpotential，andphotosyntheticindicators[netphotosyntheticrate （Pn），stomatalconductance（Gs）， transpirationrate（Tr）， water use effciency （WUE）]were assessed afterbeing subjected todiffrent NaCl[O（CK），50， 100，200，300，and 400 mmol/L]treatments.The resultsshowed that compared to thecontrol，50 mmol/L NaCl strongly boosted the germinationrate，diameterofcotyledon，primaryroot length，fresh weight，dry weight，relative growthrate， and significantly increased the Na+ concentrations in roots，stems，and leaves; the concentration of Na i+ in leaves was significantly higher than that in roots and stems when adding 5O-3OO mmol/L NaCl （ P<0.05 ）； the K+ concentrations in roots also increased significantly when exposed to 50-100 and 300-400 mmol/L NaCl.Moreover，external NaCl apparently increased the Pn，Gs，Tr and WUE（ P <0.05）.Compared with CK，the osmotic potential of the plants significantly decreased under 50-400 mmol/L NaCl treatments. It is speculated that moderate NaCl treatment could promote the growth of L. ruthenicum by regulating the N a+ ， K+ content and photosynthesis，and resisted to salt stress by transporting Na+ to leaves in L.ruthenicum.

Keywords Lycium ruthenicum;salt stress; K+ ，Na+content;photosynthesis

在自然条件下，干旱往往伴随着土壤盐渍化，盐胁迫是对植物损害较为严重的非生物胁迫之一，会引起植物生长、形态结构和生理生态等一系列过程变化，影响植物的生长发育，甚至引起植株死亡。（剩余11623字）