A greenhouse culture experiment was used to evaluate the effects of antimony(Sb)stress on Ficus tikoua(F.tikoua).Theresults showed that the growth of F.tikoua leaves was significantly inhibited when Sb concentration w...A greenhouse culture experiment was used to evaluate the effects of antimony(Sb)stress on Ficus tikoua(F.tikoua).Theresults showed that the growth of F.tikoua leaves was significantly inhibited when Sb concentration was higher than30μmol/L,andno significantly inhibitory effect of Sb on the roots and stems of F.tikoua was found in all the treatments,implying that leaves weremore sensitive to Sb toxicity than roots and stems.Antimony concentration in the roots was higher than that in the stems and leaves.To reduce reactive oxygen species(ROS)level in the F.tikoua,the activities of superoxide dismutase(SOD),peroxidase(POD)andcatalase(CAT)increased with Sb treatments,but the SOD and CAT were more early active than POD.Although the decrease ofchlorophyll content with high Sb treatments(450μmol/L)was observed at the end of the experiments,the positive impact onchlorophyll content was observed with all the Sb treatments at the early period.No significant difference of the maximum quantumefficiency of PSII and quantum yield of PSII electron transport values with different Sb treatments was observed at the end of thisexperiment,suggesting that the photosynthesis was not inhibited with Sb concentration below450μmol/L.The results implied acertain tolerance to Sb stress for F.tikoua.This meets the essential condition for utilization in Sb contamination environments.展开更多
Based on the principle of asexual reproduction,a kind of scale breeding and reproduction technique of Ficus tikoua Bur.container seedlings was explored by using the characteristics of strong adaptability to the enviro...Based on the principle of asexual reproduction,a kind of scale breeding and reproduction technique of Ficus tikoua Bur.container seedlings was explored by using the characteristics of strong adaptability to the environment and fast growth and reproduction.Using non-woven bag as a breeding container for seedlings,the scale breeding and reproduction technique of F.tikoua container seedlings was summarized through the important links of seedling bed construction,seedling collection,soil configuration,container selection,cutting cultivation,field management,and disease and pest control.This technique can achieve differential,massive and sustainable efficient breeding and reproduction of F.tikoua seedlings in a short time.展开更多
目的:分析地果研究领域的现状和发展趋势,为其研究和应用提供参考。方法:以中国知网(CNKI)期刊全文数据库和Web of Science核心数据库为文献来源,基于CiteSpace对地果研究领域的发文量、发文机构、研究作者、关键词和高被引文献进行分...目的:分析地果研究领域的现状和发展趋势,为其研究和应用提供参考。方法:以中国知网(CNKI)期刊全文数据库和Web of Science核心数据库为文献来源,基于CiteSpace对地果研究领域的发文量、发文机构、研究作者、关键词和高被引文献进行分析。结果:地果研究相关文献的数量处于波动状态,总量较少,质量还需提升;中国是研究地果的主要国家,且国内研究机构主要位于其自然分布区域内,国际上对地果的关注极少。国内核心作者源于机构内的合作,机构之间协作较少。总黄酮和化学成分等主题是当前地果的研究热点。结论:目前,对地果的研究少、开发利用程度低,未来应加强品种选育以发挥其在园林、药用、食用和生态修复等方面的优良特性,同时应加强对其系统发育和地果-榕小蜂协同进化等研究。展开更多
基金Project(2012GS430203-1)supported by Science and Technology Program for Public Wellbeing,China
文摘A greenhouse culture experiment was used to evaluate the effects of antimony(Sb)stress on Ficus tikoua(F.tikoua).Theresults showed that the growth of F.tikoua leaves was significantly inhibited when Sb concentration was higher than30μmol/L,andno significantly inhibitory effect of Sb on the roots and stems of F.tikoua was found in all the treatments,implying that leaves weremore sensitive to Sb toxicity than roots and stems.Antimony concentration in the roots was higher than that in the stems and leaves.To reduce reactive oxygen species(ROS)level in the F.tikoua,the activities of superoxide dismutase(SOD),peroxidase(POD)andcatalase(CAT)increased with Sb treatments,but the SOD and CAT were more early active than POD.Although the decrease ofchlorophyll content with high Sb treatments(450μmol/L)was observed at the end of the experiments,the positive impact onchlorophyll content was observed with all the Sb treatments at the early period.No significant difference of the maximum quantumefficiency of PSII and quantum yield of PSII electron transport values with different Sb treatments was observed at the end of thisexperiment,suggesting that the photosynthesis was not inhibited with Sb concentration below450μmol/L.The results implied acertain tolerance to Sb stress for F.tikoua.This meets the essential condition for utilization in Sb contamination environments.
基金Supported by National Natural Science Foundation of China(32160086,32160287,31900271)Key Project of Guizhou Provincial Science and Technology Fund(QKHJC[2019]1455)+1 种基金Central Government Supporting Local Science and Technology Development Fund Project(QKZYD[2021]4010)Undergraduate Innovation and Entrepreneurship Training Program(S202110665031,S202310665002,S202310665012).
文摘Based on the principle of asexual reproduction,a kind of scale breeding and reproduction technique of Ficus tikoua Bur.container seedlings was explored by using the characteristics of strong adaptability to the environment and fast growth and reproduction.Using non-woven bag as a breeding container for seedlings,the scale breeding and reproduction technique of F.tikoua container seedlings was summarized through the important links of seedling bed construction,seedling collection,soil configuration,container selection,cutting cultivation,field management,and disease and pest control.This technique can achieve differential,massive and sustainable efficient breeding and reproduction of F.tikoua seedlings in a short time.
文摘目的:分析地果研究领域的现状和发展趋势,为其研究和应用提供参考。方法:以中国知网(CNKI)期刊全文数据库和Web of Science核心数据库为文献来源,基于CiteSpace对地果研究领域的发文量、发文机构、研究作者、关键词和高被引文献进行分析。结果:地果研究相关文献的数量处于波动状态,总量较少,质量还需提升;中国是研究地果的主要国家,且国内研究机构主要位于其自然分布区域内,国际上对地果的关注极少。国内核心作者源于机构内的合作,机构之间协作较少。总黄酮和化学成分等主题是当前地果的研究热点。结论:目前,对地果的研究少、开发利用程度低,未来应加强品种选育以发挥其在园林、药用、食用和生态修复等方面的优良特性,同时应加强对其系统发育和地果-榕小蜂协同进化等研究。
