NaCI-NaHCO混合胁迫对兰州百合生长发育及生理活性的影响

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中图分类号 S644.1 文献标识码A 文章编号 1007-7731（2025）12-0097-05

DOI号10.16377/j.cnki.issn1007-7731.2025.12.023

Effects of NaCl-NaHCO3 combined stress on growth and physiological activity of Liliumdavidiivar.willmottiae

WANG Juye1YANGMing²JINLei1 （ 1 College of Forestry and Prataculture，Ningxia University， Yinchuan 75Oo21， China; ²Baijitan National Nature Reserve Administration Bureau，Lingwu， Yinchuan 75O40o， China）

AbstractTo explore the effects of salt-alkali stress on the growth，development and physiological activities of Liliumdavidii var.willmottiae，different NaCl-NaHCO 3 combined stress concentrations were set，with concentration of 0 mmol/L（CK），50 mmol/L（T1），100 mmol/L （T2），and150 mmol/L（T3），respectively.The growth indicatorssuchas plant height andphysiological indicatorssuch as chlorophyllcontentat diferent growth stages （seedling stage，bud formation stage，flowering stage，semi-dead stage）under varioustreatments were determined.Theresults showed that withthe increaseof salt-alkali concentration，theplant height，stem thicknessand leaf length and widthof Lilium davidi var.wilmottie in thesame growth period graduallydecreased.Withthe extensionof the growth period，theleaf length of the CK treatment increasedmost significantly.The longitudinal diameterof bulbs in the semi-dead stage T1 was 31.55 mm，increasing by2.80%vs.CK.The transverse diameterof bulbs in T2 was 36.32 mm，increasing by 8.78% vs.CK.The circumdiameter of bulbs in T2 was 13.77 cm， increasing by 13.46% vs.CK.With the increase of salt-alkali concentration，theSODactivityofLilium davidiivar.willmottiae leaves in variousperiods，thePODactivityof leavesat the seedlingstage，budformationstage andsemi-dead stage showedatrend offirstincreasingandthen decreasing，and thechlorophyllcontentat the seedling stage，budformation stage and flowering stage showed a decreasing trend.In conclusion，salt-alkali stress has a certain inhibitory effect onthe growth and development of Lilium davidii var.

willmottiae.However，moderate stress（1OO mmol/L）was conducive to the enlargementof bulbsand theaccumulationof physiologicaly active substances.This article provides a reference for exploring the physiological mechanism of saltalkali tolerance of Lilium davidii var.willmottiae.

KeywordsLilium davidii var.willmottiae;salt-alkali stress; growth and development; physiological activity

兰州百合（Liliumdavidiivar.willmottiae）是可食用甜百合品种之一，其鳞茎洁白、肉质细腻，具有丰富的营养物质。（剩余5444字）