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观赏地被植物—石蒜类 总被引：1，自引：0，他引：1
石蒜类(Lycoris Herb.)多年生球根花卉,属石蒜科(Amaryllidaceae)约20种,主要产于中国和日本,但我国是本属植物的分布中心。在产地常野生于缓山坡林缘较湿润而又排水良好处。不择土壤,但在园艺上以富含腐殖质的砂质壤土最佳。盛夏绽放出红、黄、白色的花,花朵弯弯曲曲,状如龙爪。石蒜类中有的是先抽出花葶开花,花谢后出叶,有的是先抽叶,在叶枯以后抽葶开花。花朵色彩、姿容,艳丽夺目。用作园林绿化,配置在岩石园或假山叠石旁,点缀景观,独具一格。常见的种类有以下几种: 相似文献
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本文应用6条ISSR引物对石蒜和忽地笑11个种群共279个样本进行试验,欲从分子水平上研究其遗传差异,并对其遗传多样性和遗传结构等方面进行研究。6条引物共扩增出62个条带,其中多样性条带为60条,多态性可达96.8%。其中有5条引物可以扩增出鉴别石蒜和忽地笑的特异性扩增条带,共计11条,其中4条为石蒜种群特有,7条为忽地笑种群特有,从而将二者鉴别出来。另外石蒜和忽地笑种群多态位点百分率(PPB)分别为95.2%和58.1%,Nei’s基因多样性(H)分别为0.297和0.157,Shannon多样性指数(I)分别为0.454和0.248。石蒜和忽地笑种群的基因分化系数Gst分别为0.374和0.457,说明其天然种群的大部分变异(62.6%和54.3%)存在于种群内。石蒜和忽地笑种群的基因流Nm分别为0.836和0.593,比较小。UPGMA聚类结果显示,8个石蒜种群聚为一类,然后与3个忽地笑种群最后聚在一起。 相似文献
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通过茎盘沟切的方式,设计随机区组试验在峨眉山生物资源实验站开展峨嵋山本地植物忽地笑与引种植物长筒石蒜的无性繁殖试验,研究生长调节剂及其浓度对分生子球性状的影响。研究结果表明：①与自然分球相比,人工干预可明显提高种球的繁殖率。试验中忽地笑的平均繁殖率为21.15,其中＂6-BA500＂作用下繁殖率高达32.2;长筒石蒜的平均繁殖率为7.93,＂NAA250＂作用下繁殖率最高,为12.9;②NAA、6-BA促进种球的繁殖能力,且随着浓度的增加种球的繁殖系数也相应增加,而GA3则起到抑制作用。生长调节剂NAA对忽地笑繁殖率的影响明显大于长筒石蒜;③综合繁殖率、子球的平均重量、平均直径以及根的长势情况,＂6-BA300＂是忽地笑繁殖的最佳组合,＂NAA200＂是长筒石蒜繁殖的最佳组合。 相似文献
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石蒜植物的种质资源、药用开发及其快速繁育 总被引：2，自引：0，他引：2
简述石蒜科Anaryllaceae石蒜属Lycoris种质资源的基础上,分析石蒜药用开发的前景,并介绍无性繁殖的一种方法. 相似文献
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报道了12个植物分布新记录,其中南泽兰属Austroeupatorium,南泽兰A. inulifolium,龙潭荇菜Nymphoides lungtanensis为中国大陆分布新记录;蒜香茄Solanum sisymbriifolium,三脉猪殃殃Galium kamtschaticum,岩生千里光Senecio wightii为华东分布新记录;芝麻菜属Eruca,芝麻菜E. vesicaria subsp. sativa,祁门过路黄Lysimachia qimenensis,小酸浆Physalis minima,西洋蒲公英Taraxacum officinale,红蓝石蒜Lycoris haywardii为浙江分布新记录。 相似文献
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通过对石蒜科花卉的引种栽培、观测统计,以及应用花卉综合评价与筛选常用的AHP层次分析法进行综合评定,得出初恋风雨兰、韭兰和紫花文殊兰具有较高的推广应用价值,百子莲、水鬼蕉、双皇、女神、葱莲等15个品种的综合评价分值略低于前3个品种,仍具有发展潜力;乳黄葱、晚香玉、巴贝多等13个品种综合评价分值属于Ⅲ级,忽地笑,花叶蜘蛛兰,红花石蒜和网球花的综合评分值属于Ⅳ级,Ⅲ级和Ⅳ级品种不建议广泛生产应用。 相似文献
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君子兰原产于南非,属石蒜科(Amaryllidceae)、君子兰属(Cliria Lindl.)的多年生常绿野生草本花卉,又名剑叶石蒜。
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2004年在北京门头沟区科技开发实验基地研究了核桃子苗嫁接技术和核桃子苗砧嫁接过程中相关生理指标的变化.结果表明:2 000 mg·L-1GA3浸泡种子、摘心处理能显著提高砧木茎粗度;愈合环境温度控制在26 ℃,锯末含水量控制在410 g·kg-1,箱上打孔,嫁接成活率可达80%以上;子苗展真叶1 ～10片时,IAA、GA3、ZR含量与IAA/ABA值相对较高;砧穗愈合过程中,砧木的可溶性糖、蛋白质含量与IAA/ABA值先降后升再降,PPO活性呈相反趋势,IAA、GA3、ZR含量先降后升,ABA含量一直呈缓慢上升的趋势. 相似文献
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Soil samples were taken from depth of 0–12 cm in the virgin broad-leaved/Korean pine mixed forest in Changbai Mountain in
April, 2000. 20 μL·L−1 and 200 μL·L−1 CH4 and N2O concentration were supplied for analysis. Laboratory study on CH4 oxidation and N2O emission in forest soil showed that fresh soil sample could oxidize atmospheric methane and product N2O. Air-dried soil sample could not oxidize atmospheric methane, but could product N2O. However, it could oxidize the supplied methane quickly when its concentration was higher than 20 μL·L−1. The oxidation rate of methane was increased with its initial concentration. An addition of water to dry soil caused large
pulse of N2O emissions within 2 hours. There were curvilinear correlations between N2O emission and temperature (r2=0.706, p<0.05), and between N2O emission and water content (r2=0.2968, p <0.05). These suggested temperature and water content were important factors controlling N2O emission. The correlation between CH4 oxidization and temperature was also found while CH4 was supplied 200 μL·L−1 (r2=0.3573, p<0.05). Temperature was an important factor controlling CH4 oxidation. However, when 20 μL·L−1 CH4 was supplied, there was no correlation among CH4 oxidization, N2O emission, temperature and water content.
Foundation item: This paper was supported by Chinese Academy of Sciences.
Biography: ZHANG Xiu-jun (1960-), female, Ph. Doctor, lecture in Laboratory of Ecological Process of Trace Substance in Terrestrial
Ecosystem, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110015, P.R. China.
Responsible editor: Song Funan 相似文献
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以超临界CO2萃取得到的常山胡柚外果皮色素粗产品为原料,对其进行初步鉴定,并研究了pH值、温度、光照、金属离子、氧化还原剂等对常山胡柚天然色素稳定性的影响。结果表明;常山胡柚天然色素属于黄酮类物质,用NaNO2-Al(NO3)3比色法进行定量分析得知,色素液中含有黄酮类的量为2.01 g.L-1,该色素在碱性和中性溶液中较稳定,在酸性溶液中不稳定。光照、高温和氧化剂都会对该色素造成破坏;该色素能耐弱还原剂。低浓度Na 的存在会使最大吸光度增加,具有增色作用,高浓度Na 的存在能使最大吸光度降低。随着Zn2 浓度的增加,色素液的色泽明显变淡,吸光度急剧下降。Ca2 、Cu2 影响趋势基本一致,加入的离子浓度小于0.05 mol.L-1时,色素残存率缓慢下降;大于0.05 mol.L-1时,色素残存率有低幅增加趋势。Mg2 的加入会让色素残存率变小。 相似文献
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The tender leafstalks of Ledum palustre var.dilatatum were used as explants for the experiment.Uniform design for the most suitable media for shoots regeneration immediately at base of tender leafstalks,rooting and germplasm conservation in vitro was screened.The results showed that N6+ZT 2.65 mg·L-1+IAA 0.05 mg·L-1 was fits for shoots regeneration,the frequency of shoots induction was higher than 92.5%;MS(modified)+IAA 0.1 mg·L-1+Kt 0.75 mg·L-1 for rooting,the rate of rooting was 98%;N-68+B9 2.5 mg·L-1+ Ph... 相似文献
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[目的]针对油橄榄容器苗存在主根较为粗大、须根极少、根系盘绕等现象开展化学制剂控根试验,找出适宜油橄榄容器苗的化学控根试剂,从而解决根系畸形导致的油橄榄苗木质量差等问题。[方法]采用4种不同浓度的CuSO_4制剂及ZnSO_4制剂对油橄榄2年生容器苗进行控根试验,测定苗高、地径及地上部、下部生物量,通过根系扫描仪分析根系生长特点,探讨各项生长指标以及生理指标对控根效果的影响。[结果]显示:(1)20 g·L~(-1)和60 g·L~(-1)的Cu制剂可提高容器苗的地上部分生长量;60 g·L~(-1)和200 g·L~(-1)的Cu制剂可显著增加生物量的积累。(2)200 g·L~(-1)的Cu制剂对苗木新根着生效果最为显著;120 g·L~(-1)的Cu制剂对根系的直径、表面积和体积有良好的促进作用;而不同ZnSO_4控根制剂处理对苗木侧根的各指标产生抑制作用。(3)枝条生长量与侧根长度呈显著正相关性;地径、枝条生长量与侧根表面积呈极显著正相关关系。(4)120 g·L~(-1)的Cu制剂处理后叶片的可溶性蛋白质含量最高,Cu制剂浓度为20 g·L~(-1)时,叶片的叶绿素含量增加。[结论]试验发现质量浓度为120 g·L~(-1)和200g·L~(-1)CuSO_4制剂控根效果良好,可运用于实际生产。 相似文献
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以'燕昌'板栗为试材,研究了采后不同浓度NaClO(100、500、1 000 mg·L-1)水浴处理对板栗沙藏效果的影响.研究表明:500 mg·L-1NaClO水浴处理有利于降低板栗在沙藏期间(30 ～150 d)的淀粉水解,有利于保持沙藏后期的淀粉含量.1 000 mg·L-1NaClO水浴处理抑制了蛋白质的降解,其它处理与对照没有差异.水浴处理促进了板栗在处理期间的乙醇积累,在沙藏过程中乙醇逐渐消失并且与对照没有差异.NaClO水浴处理对抑制沙藏板栗的发芽和腐烂有明显作用,经150 d沙藏,500 mg·L-1处理的发芽率和腐烂率均为2%,1 000 mg·L-1处理的均为0.500、1 000 mg·L-1NaClO水浴处理有利于提高沙藏板栗的质量. 相似文献
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为提高微生物油脂产量,以产油微生物深黄被孢霉为试验菌株,采用单因素试验设计,通过摇瓶培养,研究了产脂培养基中碳源、氮源种类及其浓度、接种量、初始pH值、无机盐离子对菌体生长和油脂积累的影响,确定了深黄被孢霉摇瓶发酵产油脂的优化培养条件为:葡萄糖100 g.L-1,酵母粉3.0 g.L-1,接种量为20%,pH值为5.0~6.0,硫酸镁(MgSO4.7H2O)0.5 g.L-1,磷酸二氢钾(KH2PO4)2.0 g.L-1。在优化培养条件下菌体生物量为20.62 g.L-1,油脂含量为43.02%,油脂产量为8.87 g.L-1。 相似文献
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[目的]探究一氧化氮供体硝普钠(SNP)对白桦悬浮细胞中K~+、Ca~(2+)和白桦酯醇累积的影响及外源K~+、Ca~(2+)与SNP互作对白桦酯醇累积的影响。[方法]利用高效液相色谱法、原子吸收光谱法及比色法分别测定白桦酯醇、K~+及Ca~(2+)含量。[结果]SNP处理对白桦悬浮细胞中K~+、Ca~(2+)的累积存在浓度和时间效应,其中1 mmol·L-1SNP处理12 h时K~+含量最高,是对照组的1.47倍,而Ca~(2+)含量在5 mmol·L-1SNP处理96 h时最高,是对照组的1.50倍。1 mmol·L-1SNP与不同浓度KCl共同处理后,白桦酯醇含量高于单独SNP与KCl处理,其中,SNP与0.1 g·L-1KCl共同处理时,白桦酯醇的积累量最大,是单独SNP处理1.72倍,是单独KCl处理2.33倍。1 mmol·L-1SNP与不同浓度Ca Cl2互作处理后,白桦酯醇含量高于单独SNP与Ca Cl2处理,其中,SNP与0.1 g·L-1Ca Cl2共同处理时,白桦酯醇的积累量最大,是单独SNP处理2.75倍,是单独Ca Cl2处理2.18倍。[结论]SNP处理诱导了白桦悬浮细胞中K~+和Ca~(2+)的合成和白桦酯醇的累积,SNP分别与K~+或Ca~(2+)互作可以更好的促进白桦悬浮细胞中白桦酯醇的累积,同时推测SNP诱导的K~+、Ca~(2+)在一定程度上介导了白桦酯醇的累积。 相似文献
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[Objective]To further understand the ion metabolism characteristics of Elaeagnus angustifolia L. under NaCl stress.[Method]The seedlings of two E. angustifolia L. provenances, which were Alaer (salt tolerance provenance) and Yinchuan (salt sensitive provenance), were treated by three NaCl concentrations (0,150,300 mmol·L-1) and sampled at the 7th day and the 30th day to measure the Na+ , K+, Ca2+, and Mg2+ contents, K+/Na+ ratio and selective absorption and transportation of K+ in tissues (roots, stems and leaves). [Result]The results showed that the Na+ content in the organizations of E. angustifolia L. sharply increased with the increase of NaCl concentration. With prolonging of stress time, the Na+ content increased in roots, and decreased in stems and leaves. After seedlings of the two provenances were treated with 150 mmol·L-1 NaCl for 7 days, the Na+ content was 2.10 times and 2.23 times in leaves, respectively, compared with the control groups, and was 1.79 times and 1.57 times in root. Meanwhile, the difference between two provenances showed a expanding trend with the increase of NaCl concentration and stress time. With the increase of NaCl concentration and extension of stress time, the K+ content, Ca2+ content and K+/Na+ ratio in organizations decreased gradually. Meanwhile, the Alaer provenance seedlings accumulated more Na+ in roots and less Na+ in leaves than that of Yinchuan provenance, and the K+ content, Ca2+ content and K+/Na+ ratio decreased less in the Alaer provenance seedlings than those of Yinchuan provenance. With the increase of NaCl concentration, the Mg2+ content in leaf gradually decrease, but the Mg2+ content in root increased 22.8~64.4% after salt stress for 7 days, and Alaer provenance seedlings increased more than Yinchuan provenance. After 30 days, there was non-significant difference with the control group on the Mg2+ content of root. K+ selective absorption of E. angustifolia L. seedlings significantly increased with increasing salt concentration of the media at the 7th days, whereas not obvious at the 30th days. When the concentration of NaCl in the media increased, the change of K+ selective transportation was not significant. [Conclusion]E. angustifolia L. seedlings increase Mg2+ content and K+ selective absorption in the roots at the early stage of salt stress to adapt saline environment. The salt-tolerance E. angustifolia L. provenance can cut off more Na+ in roots and reduce Na+ content in leaves, which cause less K+, Ca2+ and Mg2+ contents loss, especially the roots and leaves, so as to ensure that all kinds of metabolisms can go well. 相似文献