摘要
以不同浓度的老鼠簕地上部分(茎叶)和地下部分(根)水浸液为供体,无瓣海桑种子为受体,采用室内水培法,用无瓣海桑种子发芽力(发芽率、简化活力指数、萌根速度、田间出苗率)、幼苗素质(幼苗单株鲜重、含水量、幼苗全长和幼苗根长)为指标,评价老鼠簕对无瓣海桑化感的潜力。结果表明:老鼠簕两个部分对无瓣海桑均有化感作用,且地上部分作用强度大于地下部分,各部分的作用强度随着浓度的增加而增大;在发芽力的影响上,除了0.1 g.mL-1地下部分促进萌根速度外,其余都表现出显著和极显著的抑制效应,其中地上部分0.4 g.mL-1、0.5 g.mL-1组中,田间出苗率分别为40%和0%;在幼苗的素质影响上,老鼠簕两部都呈现出极显著"高抑低促"的规律,含水量随着水浸液浓度增加而减少。
By taking the ground sections （stems, leaves） and underground sections （roots） of Acanthus ilicifolius as the donors, the Sonneratia apetala seeds as the receptors, and adopting indoor hydroponic cultivation method, the allelopathy of A. ilicifolius to S.apetala was evaluated with the indexes system, including germination ability（germination rates, simplified vitality index, root sprouting rate, field germination） and seedling quality （seedling plant fresh weight, water content, seedling length and seedling root length ）. The results show that the two parts of the Acanthus ilicifolius （stems, leaves）all had allelopathic influence on S.apetala, the intensity of aerial parts were greater than the underground sections, each part of the interaction strength increased with increase of concentration; the influence of germination, except the underground sections 0.1g · ml^-1 , could promote the sprouting root speed, the rest showed a significant and very significant inhibitory effect, ground sections 0.4 g · ml^-1, 0.5 g · ml^-1 group, field germination were 40 % and 0%; in the aspect of impact on the quality of the seedlings, Acanthus ilicifolius emerged two very significant laws, nemaly ＂high concentrations inhibit and low concentrations promote＂, the water content decreased with increase of two part＇ s concentrations.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2012年第6期34-36,47,共4页
Journal of Central South University of Forestry & Technology
基金
国家科技支撑课题"沿海滩涂消浪护岸林体系研究与示范"(2009BADB2B04)
广东省科技计划项目(重大专项及重点项目)"广东省沿海红树林生态系统恢复与重建技术研究"(A3050102)
广东省林业科技创新示范工程省级专项资金项目"2008年寒害受损红树林生态系统快速恢复技术研究与示范"(2008KJCX012-03)
关键词
红树林
无瓣海桑
老鼠簕
化感作用
mangrove forest
Sonneratia apetala
Acanthus ilicifolius,＂ allelopathy
