T3 > T1 > T2 ,且僅T4的 D 值高于CK。綜上,施用4種不同類型的植物防凍劑均在一定程度上提升了滇丁香的抗寒性,其中植物激素類防凍劑( <img src="/qkimages/hnkx/hnkx202503/hnkx20250315-1-l.jpg" with="53px" style="vertical-align: middle;"> 誘抗素)效果最佳。-龍?jiān)雌诳W(wǎng)" />

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防凍劑對滇丁香抗寒生理的研究初探

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引用格式:.防凍劑對滇丁香抗寒生理的研究初探[J].湖南農(nóng)業(yè)科學(xué),2025(3):83-87.DOI:10.16498/j.cnki.hnnykx.2025.003.015

中圖分類號:S685.26 文獻(xiàn)標(biāo)識碼:A 文章編號: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.)為茜草科(Rubiaceae)滇丁香屬的多年生常綠灌木或小喬木,生長在海拔 6 0 0~3 0 0 0 m 的石灰?guī)r山脈、開闊山坡、次生灌叢和溪流附近的森林中,主要分布于中國青藏高原東南部、緬甸東北部及越南北部[1],包括我國云南、貴州、廣西和西藏等地;其中,在云南省的西南、西北與東南區(qū)域分布最為廣泛。(剩余7042字)

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