期刊论文

Effects of litter extract of Phoebe bournei(Hemsl.)Yang on seed germination,seedling growth,and physiological indices

中文

植物科学学报

2095-0837

2024

42

1

114-124

10.11913/PSJ.2095-0837.22328

2021YFD2201304:国家重点研发计划

本校为第一机构

采用不同浓度凋落枝、凋落叶浸提液处理闽楠(Phoebe bournei(Hemsl.)Yang)种子和幼苗,测定其萌发、生长及生理指标.结果显示:(1)整体上,闽楠凋落枝和凋落叶浸提液对自身种子萌发表现为抑制作用,且抑制作用均随两种浸提液浓度升高而增强,且凋落枝抑制作用大于凋落叶.在发芽指标上,抑制强度表现为枝>叶;在根芽长度上,抑制强度表现为叶>枝;综合化感效应表现为枝>叶.(2)凋落枝浸提液对一年生闽楠幼苗生长指标表现为抑制作用,凋落叶浸提液表现为"低促高抑"的效应.高浓度浸提液可严重抑制幼苗生长,并造成大量叶片出现斑点、萎缩和枯黄;(3)闽楠凋落物浸提液对闽楠幼苗生理的影响较为复杂,高浓度浸提液可...

In this study,different concentrations of Phoebe bournei(Hemsl.)Yang litter branch and leaf ex-tracts were tested to treat P.bournei seeds and seedlings.Seed germination,seedling growth,and physiologi-cal indices were measured.Results showed that:(1)Extracts of P.bournei litter branches and leaves inhibi-ted seed germination at all concentrations.Inhibition intensity was enhanced with the increase in the concen-tration of the two extracts.However,inhibition intensity of the litter branches was greater than that of the litter leaves.Notably,inhibition intensity was branch>leaf regarding the ger...