CAJ | 학술논문

为探明蓝花楹是否存在对其它植物产生化感作用的相关物质,以生长在四川温江地区的蓝花楹完整单花为供体材料、莴苣与高羊茅为受体材料、清水处理为对照(CK),采用培养皿滤纸法进行种子萌发以及生物测定法培养幼苗,研究浓度为0．001、0．025、0．050 g·mL－1的蓝花楹花水浸液对莴苣与高羊茅的种子萌发幼苗生长的化感作用.结果表明：莴苣与高羊茅的种子萌发均受到该水浸液的抑制作用,在萌发指数上表现较明显即综合化感效应(SE 2)分别表现为-0．13、-0．27；莴苣的苗高受到促进作用而根长和根冠比却受到抑制作用,其苗高 SE 3＝0．13、根长 SE 4＝-0．36、根冠比 SE 5＝-0．16；高羊茅的根冠比受到促进作用而苗高和根长却受到抑制作用,其 SE 3＝-0．12、SE 4＝-0．08、SE 5＝0．16；莴苣叶片丙二醛含量和根系活力值均受到抑制作用,其丙二醛含量的 SE 6＝-0．25和根系活力 SE 7＝-0．44,高羊茅的响应则相反,分别表现为 SE 6＝0．04和SE 7＝0．34.当水浸液浓度为0．025 g·mL－1时,多处出现 RI 极值或某种趋势的拐点,特别是受体植物的叶片丙二醛含量和根系活力值的变化.研究结果表明蓝花楹花水浸液中存在化感物质,莴苣与高羊茅对其均有不同响应,这为蓝花楹在植物景观配置及养护上提供了理论依据.
위탐명람화영시부존재대기타식물산생화감작용적상관물질,이생장재사천온강지구적람화영완정단화위공체재료、와거여고양모위수체재료、청수처리위대조(CK),채용배양명려지법진행충자맹발이급생물측정법배양유묘,연구농도위0．001、0．025、0．050 g·mL－1적람화영화수침액대와거여고양모적충자맹발유묘생장적화감작용.결과표명：와거여고양모적충자맹발균수도해수침액적억제작용,재맹발지수상표현교명현즉종합화감효응(SE 2)분별표현위-0．13、-0．27；와거적묘고수도촉진작용이근장화근관비각수도억제작용,기묘고 SE 3＝0．13、근장 SE 4＝-0．36、근관비 SE 5＝-0．16；고양모적근관비수도촉진작용이묘고화근장각수도억제작용,기 SE 3＝-0．12、SE 4＝-0．08、SE 5＝0．16；와거협편병이철함량화근계활력치균수도억제작용,기병이철함량적 SE 6＝-0．25화근계활력 SE 7＝-0．44,고양모적향응칙상반,분별표현위 SE 6＝0．04화SE 7＝0．34.당수침액농도위0．025 g·mL－1시,다처출현 RI 겁치혹모충추세적괴점,특별시수체식물적협편병이철함량화근계활력치적변화.연구결과표명람화영화수침액중존재화감물질,와거여고양모대기균유불동향응,저위람화영재식물경관배치급양호상제공료이론의거.
In order to verify whether there are relevant substances in J acaranda mimosifolia that can produce the al-lelopathy to other plants.We studied the allelopathy of the concentration of 0.001,0.025,0.050 g·mL-1 water ex-tract of the flowers of J .mimosifolia for the seed germination and seedling growth,taking the complete single flow-ers of J .mimosifolia grown in Wenjiang region as materials,the seeds of Lactuca sativa and Festuca arundinacea as receptor materials,and the water treatment as the control CK .The results were as follows:firstly,the seed germi-nation of F .arundinacea and Lactuca sativa was suppressed by the water extract,especially performance on the ger-mination index,and the comprehensive allelopathies (SE 2 )were-0.13 and-0.27 respectively;secondly,the seedling height of L .sativa was promoted but its root length and root-shoot ratio were suppressed,and the values of SE 3 ,SE 4 ,SE 5 were 0.13,-0.36,-0.16,while the root-shoot ratio of Festuca arundinacea were promoted but its seedling height and root length were suppressed,and the values of SE 3 ,SE 4 ,SE 5 were-0.12,-0.08,0.16 respectively.Mean-while the MDA contents and root vigor of Lactuca sativa were also suppressed,whose values of SE 6 and SE 7 were-0.25 and-0.44,the values of Festuca arundinacea were 0.04 and 0.34 reversely.Most of all,when the concentration of the water extracts was 0.025 g·mL-1 ,it showed the RI peak and inflection point of some trend in many places, especially the changes in MDA contents and root vigor of receiver plant’s leaves.Thus,the experiment proved the existence of allelochemicals in water extract of J acaranda mimosifolia flowers,Lactuca sativa and Festuca arundi-nacea ,and they had different responses to the allelochemicals,which will provide the relevant theoretical basis to the plant landscape design and maintenance of J acaranda mimosifolia in the future.