防冻剂对滇丁香抗寒生理的研究初探

打开文本图片集

引用格式：.防冻剂对滇丁香抗寒生理的研究初探[J].湖南农业科学，2025（3）：83-87.DOI：10.16498/j.cnki.hnnykx.2025.003.015

中图分类号：S685.26 文献标识码：A 文章编号：1006-060X（2025）03-0083-05

Effects of Antifreeze on Cold Resistance Physiology of Luculia pinceana Hook

KONG Ling-fang1²，SUN Yu-jiao1²，LI Shi-feng³

（1.CollgefodcalcalUsitinull Center，Dali6O，C;3.FowerResearchIstitute，YuanAcademyfgriculturalienes，Kuning650）

Abstract：ThisstudyexploredthepositiveefectsoffourdifferenttypesofantifreezeonthecoldresistanceofLuuliapinceana Hook.underlowtemperature stress，aiming toprovideabasis fortheresearch oncoldresistance physiologyandthelarge-scale promotionof tis plant.Thre-year-oldsedlingsofL.pinceana Hook.wereusedastest materials.Five treatments weredesigned， includingCK（water），T（aminoacids+macrelements），（aminoacids+microelements），3（microbialagent），and4（plant hormone）.TheresultsshowedthatT2andT4demonstrated inhibitedplantheight growth，andthevariationrangeof thenumberof branchesandleaves wasgreaterthanthatofCK.T3andT4showcasedsignificantlyreducedrelativeconductanceand malondialdehyde contentadincreasedprolinecontent.Iadition，andT4shwcasedgherperoidaseactivitytanthertreatmentsatthcond andthirdmeasurements.T1-T4inhibitedthedegradationofchlorophyllTheevaluationresultsbasedonthemembershipfunction indicated that the cold resistance of L pinceana Hook. in the four antifreeze treatments followed the trend of T4>T3>T1>T2 ，and only T4 had the D value higher than CK.Inconclusion，the four typesofantifreeze improved thecoldresistance ofL.pinceana Hook.，and the plant hormone （ 0 . 1 % abscisic acid） demonstrated the best performance.

Keywords：Luculia pinceana Hook.; low temperature stress;antifreeze;cold resistance

滇丁香（LuculiapinceanaHook.）为茜草科（Rubiaceae）滇丁香属的多年生常绿灌木或小乔木，生长在海拔 6 0 0～3 0 0 0 m 的石灰岩山脉、开阔山坡、次生灌丛和溪流附近的森林中，主要分布于中国青藏高原东南部、缅甸东北部及越南北部[1]，包括我国云南、贵州、广西和西藏等地；其中，在云南省的西南、西北与东南区域分布最为广泛。（剩余7042字）