CAJ | 학술논문

　　为了探明消落带植物南川柳(Salix rosthornii Seemen)的耐旱特性，为消落带种群构建和植物选择提供理论依据，在盆栽条件下，对南川柳1年生幼苗采用控水方式进行干旱胁迫处理，同时设置对照组进行正常灌溉，并测定叶片相对含水量(RWC)、电解质渗漏(EL)、丙二醛(MDA)等一系列与植物耐旱能力相关的生理指标以及抗氧化性酶活性的变化，系统讨论了南川柳对干旱的生理响应。结果表明：在干旱胁迫下南川柳幼苗叶片具有较强的水分保持能力，并且在复水后有相对较快的恢复能力；10天和20天的干旱胁迫对南川柳叶片电解质渗漏的影响与对照相比差异不显著，随胁迫时间的持续，EL和MDA都显著升高。在干旱胁迫下，南川柳幼苗叶片超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性整体呈先升高后降低的趋势，其中CAT对胁迫最为敏感，而POD响应相对较为缓慢；在复水20天后3种酶活性有所恢复，但均未恢复到对照的水平。
　　위료탐명소락대식물남천류(Salix rosthornii Seemen)적내한특성，위소락대충군구건화식물선택제공이론의거，재분재조건하，대남천류1년생유묘채용공수방식진행간한협박처리，동시설치대조조진행정상관개，병측정협편상대함수량(RWC)、전해질삼루(EL)、병이철(MDA)등일계렬여식물내한능력상관적생리지표이급항양화성매활성적변화，계통토론료남천류대간한적생리향응。결과표명：재간한협박하남천류유묘협편구유교강적수분보지능력，병차재복수후유상대교쾌적회복능력；10천화20천적간한협박대남천류협편전해질삼루적영향여대조상비차이불현저，수협박시간적지속，EL화MDA도현저승고。재간한협박하，남천류유묘협편초양화물기화매(SOD)、과양화물매(POD)화과양화경매(CAT)활성정체정선승고후강저적추세，기중CAT대협박최위민감，이POD향응상대교위완만；재복수20천후3충매활성유소회복，단균미회복도대조적수평。
In order to ascertain the drought tolerant characteristics of fluctuating zone plants Nanchuan willow (Salix rosthornii Seemen), and provide theoretical basis for fluctuating zone population structure and plant selection, a pot experiment was conducted on Nanchuan willow 1-year-old seedings under water control drought stress. Leaf relative water content (RWC), electrolyte leakage (EL), malondialdehyde (MDA) and a series of physiological indicators related to plant drought tolerance and resistance to oxidation activity changes were measured. The results indicated that:(1) Nanchuan willow seedling leaves had strong moisture retention capacity under drought stress and relatively fast recovery after re-watering;(2) 10 days and 20 days of drought stress had no significant effects on EL and MDA. With the continued drought stress, EL and MDA increased significantly;(3) the overall trend of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) activity under drought stress was first increased and then decreased. CAT was the most sensitive to drought stress, while POD was relatively insensitive. After re-watering 20 days, all three enzyme activities started to recovery, but not to the level of the control group.