摘要
以波斯菊(Cosmos bipinnata)、一串红(Salvia splendens)、三色堇(Viola tricolor)、五彩石竹(Dianthus chinensis)、百日草(Zinnia elegans)和万寿菊(Tagetes erecta)等6种草本花卉种子为试材,采用不同浓度(0%、0.5%、1.0%、1.5%、2.0%和2.5%)NaCl溶液处理种子,通过萌发试验,记录萌发率和萌发指数,以比较研究6种草本花卉种子的耐盐性。结果表明:五彩石竹可以在6种浓度NaCl溶液中萌发,其在1.5%、2.0%和2.5%浓度NaCl溶液中的萌发率和萌发指数显著最高,在0.5%和1.0%浓度NaCl溶液中的萌发率和萌发指数中等;波斯菊和万寿菊种子可以在0%、0.5%、1.0%、1.5%和2.0%的NaCl溶液中萌发;除个别情况外,波斯菊种子在NaCl溶液中的萌发率和萌发指数显著较高;万寿菊种子本身萌发率和萌发指数最强,但其在NaCl溶液中的萌发率和萌发指数中等;一串红种子萌发率和萌发指数中等;三色堇和百日草种子只在低浓度NaCl溶液中萌发,且二者萌发率和萌发指数较低。因此,6种草本花卉种子萌发阶段的耐盐性表现为五彩石竹最优,波斯菊次之,一串红和万寿菊中等,三色堇和百日草较差。
Cosmos bipinnata,Salvia splendens,Viola tricolor,Dianthus chinensis,Zinnia elegans and Tagetes erecta were taken as materials in seed germination stage,different concentration(0%,0.5%,1.0%,1.5%,2.0%and 2.5%)of NaCl solution treated on seeds,then germinaiton characteristics were studied.In order to compare salt tolerance among six species of herbaceous flowers.The results showed that the seeds of Dianthus chinensis could germinate at six concentration of NaCl solution,and germination percentage and germination index were significantly the highest at 1.5%,2.0%and 2.5%concentration of NaCl solution while which were intermediate at 0.5%and 1.0%concentration of NaCl solution.Cosmos bipinnata and Tagetes erecta could germinate at 0%,0.5%,1.0%,1.5%and 2.0%concentration of NaCl solution.Except for isolated cases,germination percentage and germination index at NaCl solution of Cosmos bipinnata were significantly higher than others.Germination percentage and germination index of Tagetes erecta at control were the highest while which were intermediate at NaCl solution.Germinatioin percentage and germination index of Salvia splendens were intermediate while which of Viola tricolor and Zinnia elegans were low at NaCl solution.So,salt tolerance of six species of herbaceous flowers in seed germination stage were Dianthus chinensis was the best,Cosmos bipinnata was the second,Salvia splendens and Tagetes erecta were intermediate,while Viola tricolor and Zinnia elegans were the worst.
作者
王爱波
赵斌
WANG Aibo;ZHAO Bin(Landscape Architecture College,Shangqiu University,Shangqiu,Henan 476113)
出处
《北方园艺》
CAS
北大核心
2020年第11期70-76,共7页
Northern Horticulture
基金
河南省高等学校优秀基层教学组织园林教研室资助项目
河南省高等学校青年骨干教师培养计划资助项目(2016GGJS-179)
商丘学院科研创新团队资助项目(2017KCTD01)
关键词
草本花卉
萌发率
萌发指数
耐盐性
herbaceous flowers
germination percentage
germination index
salt tolerance
