摘要
为探明外源植物激素对大花君子兰生长的影响,对大花君子兰1年生播种苗喷施不同质量浓度的水杨酸、赤霉素和油菜素内酯,测定叶长、叶宽、株高、单株鲜质量和叶绿素含量,并基于各生长指标进行综合评价。结果表明,50 mg·L^(-1)水杨酸在营养生长前中期(30~60 d)综合促生效果最优,叶长、叶宽及单株鲜质量分别较对照提升22.3%、9.2%和39.0%,株型协调性更佳;100 mg·L^(-1)赤霉素通过“促长抑宽”机制,使叶长日均增长率提高47.1%,叶长/叶宽提升16.1%,适用于株高定向调控;15 mg·L^(-1)油菜素内酯对叶长促进作用最显著(增幅24.3%),且叶绿素含量稳定性强,生物量积累高效。该研究明确了3种外源激素的最优施用质量浓度及功能定位,为君子兰幼苗培育的精准化调控提供理论依据与技术参数,助力乡村花卉产业提质增效。
To study the effects of different concentrations of salicylic acid(SA),gibberellin(GA3),and brassinolide(BR)on the growth indices of Clivia miniata seedlings,different concentration gradients of SA,GA₃,and BR were set up.Through foliar spraying treatment,indices such as seedling height,leaf shape,chlorophyll content,and fresh weight per plant were systematically measured,and a comprehensive analysis was conducted based on these growth indicators.The results showed that 50 mg·L^(-1)SA had the best comprehensive growth-promoting effect in the mid-early stage of vegetative growth(30~60 d).The leaf length,leaf width,and fresh weight per plant increased by 22.3%,9.2%,and 39.0%respectively compared with the control,and the plant type had better harmony.100 mg·L^(-1)GA3,through the mechanism of"promoting length and inhibiting width",increased the daily growth rate of leaf length by 47.1%and the leaf length/leaf width ratio by 16.1%,which was suitable for the directional regulation of plant height.15 mg·L^(-1)BR had the most significant promoting effect on leaf length(an increase of 24.3%),strong stability of chlorophyll content,and efficient biomass accumulation.This study clarified the optimal application concentrations and functional orientations of the three exogenous hormones,providing a theoretical basis and technical parameters for the precise regulation of Clivia miniata seedling cultivation,and contributing to the quality improvement and efficiency increase of the rural flower industry.
作者
任溪
岳玲
王绪崴
REN Xi;YUE Ling;WANG Xuwei(Institute of Floriculture,Liaoning Academy of Agricultural Sciences,Shenyang 110161,China;Liaoning Agricultural Rural Development Service Center,Shenyang 110034,China)
出处
《辽宁林业科技》
2026年第1期15-20,共6页
Liaoning Forestry Science and Technology
基金
2024年沈阳市科学技术计划项目(24-215-2-05)
2025年辽宁省农业科学院基本科研业务费专项资金资助(2025JCX1004)
辽宁省立山区君子兰科技特派团(2025JH5/10400173)。
关键词
大花君子兰
外源植物激素
幼苗生长
Clivia miniata
exogenous plant hormones
seedling growth
