共查询到19条相似文献，搜索用时 250 毫秒
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外源IBA对裸花紫珠扦插生根和内源激素含量变化的影响 总被引：1，自引：0，他引：1
以药用植物裸花紫珠(Callicarpa nudiflora)1年生半木质化枝条为材料,采用吲哚丁酸(IBA)5个浓度(0、1 000、1 500、2 000、2 500 mg/L)处理。每隔6 d从1 500 mg/L IBA浓度与对照处理插穗的基部取样1次,测定在生根过程中内源吲哚乙酸(IAA)、脱落酸(ABA)、赤霉素(GA3)、玉米素核苷(ZR)含量的变化。扦插80 d后,采用隶属函数法综合评价生根效果。结果表明:不同IBA浓度处理对插穗生根影响差异显著。与对照相比,IBA处理不同程度地提高了插穗的生根率、平均生根数、最长根长和平均根长,降低了偏根率。其中,以1 500 mg/L IBA处理生根效果最好,其生根率、根体积最大,综合评价指数最高。在裸花紫珠插穗根原基诱导和愈伤组织形成阶段,1 500 mg/L IBA处理可提高插穗基部IAA和GA3含量,降低ABA和ZR含量,IAA/ABA和IAA/ZR比值迅速升高。在不定根形成、发生及生长发育阶段,IAA含量下降,IAA/ABA和IAA/ZR比值逐渐降低。较低的内源ABA、ZR含量和较高的IAA、GA3含量及IAA/ABA、IAA/ZR比值,有利于裸花紫珠插穗半木质化插穗不定根的形成和发育。 相似文献
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以红厚壳（Calophyllum inophyllum）1年生嫩枝为扦插材料,探讨不同浓度梯度的萘乙酸（NAA）、吲哚丁酸（IBA）及生根粉1号（ABT）对插穗抽叶特性和生根特性的影响,并运用隶属函数值法对各处理组合的扦插效果进行综合评价。结果表明：与对照处理相比,不同激素种类及浓度处理显著影响嫩枝插穗的抽叶率、新叶数量、新叶面积等抽叶特性指标,以及生根率、偏根率、不定根数量、不定根体积、侧根数量和侧根长度等生根特性指标,但对宿叶率影响不显著。不同激素处理下嫩枝插穗的抽叶率和生根率分别为21.7%~66.7%和43.3%~98.3%,而对照处理的抽叶率和生根率均为0。基于隶属函数值法综合分析,激素处理对扦插效果的促进作用依次为NAA>ABT>IBA。NAA处理插穗的抽叶率和生根率均值为62.1%和95.4%,分别比ABT处理增加47.5%和30.2%,比IBA处理增加62.0%和57.9%。综合分析,红厚壳嫩枝扦插的最佳处理组合为1000 mg/L NAA,其抽叶率为61.7%,生根率为95.0%。 相似文献
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不同生根剂对密枝枸杞的硬枝扦插效果研究 总被引：1，自引：0，他引：1
《园艺与种苗》2015,(8)
[目的]为提高密枝枸杞的硬枝扦插成苗率,更好的应用于生产实践。[方法]采取田间试验方法,采用浓度为250 mg/L IBA+250 mg/L NAA、500 mg/L IBA、500 mg/L NAA、500mg/L IAA、500 mg/L ABT-6、500 mg/L GGR 6种生根剂和清水(CK)3~5秒速蘸处理密枝枸杞硬枝插条对其扦插效果的影响。[结果]250 mg/L IBA+250 mg/L NAA生根剂处理密枝枸杞硬枝插条的成活率最高,生根剂处理插条的分枝数较多,新生枝也较长,均极显著高于其他处理。[结论]生产上用IBA+NAA组合处理生根剂处理密枝枸杞硬枝插条,可极显著提高其成活率,促进根系和枝条生长,加快其繁殖速度。 相似文献
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以五指山野生的1～2年生的山苦茶木质化枝条为扦插材料,利用不同浓度(100、400、800 mg/L)的根旺、IBA、NAA、IAA浸泡3类插穗(长度都约为10 cm,直径分别为0.20～0.40、0.45～0.70、0.75～1.00 cm)基部,时间为0.5、2.0、8.0 h;扦插基质为河沙。结果表明,不同处理间扦插生根率和生根数与对照组相比,均存在显著差异,以直径为0.45～0.70 cm的插穗的插条的生根效果最好;单一生长调节剂的处理中,以根旺及IBA的效果最好,生根率达到50%以上;不同浓度的生长调节剂处理中以800 mg/L的IBA效果最好,生根率达到60%,生根条数13条;3种处理时间中以0.5 h的生根效果最好。 相似文献
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《热带作物学报》2017,(11)
为提高高海拔地区澳洲坚果的推广面积和产量,选育和推广澳洲坚果新品种,在云南省云县香香苗圃基地布置了澳洲坚果品种比较试验,参试品种5个:中国热带农业科学院南亚热带作物研究所自选品种‘SSCRI-C、SSCRI-D’和‘SSCRI-E’,以品种‘Kau’(344)和‘Pahala’(788)为对照。试验采用随机区组设计,5株小区,8次重复。结果表明:定植后2~3年树干直径年生长量为1.35~1.90 cm;定植后第5年植株高度在335.3~379.5 cm之间、冠幅在105.4~131.7 cm之间。品种‘SSCRI-C’和‘SSCRI-E’定植后第4年的单株产量分别为283、221 g/株,显著高于对照品种‘344’和‘788’的70.6 g/株和20.0 g/株,说明‘SSCRI-C’和‘SSCRI-E’初步表现出良好的早结特性;定植后第5年‘SSCRI-C’和‘SSCRI-E’的单株产量(带壳果)分别达到4.14、3.18 kg/株,与‘SSCRI-D’和对照品种‘788’间达到差异显著水平,明显高于对照品种‘344’和‘788’的1.99 kg/株和1.27 kg/株。说明,‘SSCRI-C’和‘SSCRI-E’表现出良好的早结和丰产特性,在高海拔地区是极有希望推广应用的候选品种。 相似文献
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[目的]加快‘露西’木槿的园林运用推广,为‘露西’木槿的繁育、生产提供技术指导。[方法]从不同插穗、不同浓度的激素、不同的扦插基质等方面对‘露西’木槿的扦插繁殖技术进行了较为系统的研究。[结果]1年生插穗与2年生插穗相比,并无显著差异。激素IBA和NAA均能促进木槿的扦插生根,IBA更有利于木槿根的增长。扦插基质珍珠岩和椰糠对木槿扦插生根率、生根数量没有影响,而草炭对生根的长度有显著的影响。[结论]1 750 mg/L IBA对‘露西’木槿的生根最有利;最适合‘露西’木槿的基质配比为8份珍珠岩+2份草炭+4份椰糠。 相似文献
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Summary Potato stem cuttings, cv. Désitrée, were treated with a powder formulation of 4-indol-3-ylbutyric acid (IBA), a gel formulation
of 1-naphthylacetic acid (NAA), or a powder formulation of NAA. Both the IBA powder and the NAA gel stimulated significantly
more roots per rooted cutting than were produced by the untreated controls but the NAA gel also significantly reduced the
number of root branches per rooted cutting (Table 1).
Untreated cuttings of cvs. Désirée and Recond were more likely to form only roots when the basal internode was long and more
likely to form only tubers when the basal internode was short (Table 2). We suggest that the number of stem cuttings forming
roots would be increased if, where necessary, the cuttings were trimmed to leave a long basal internode. 相似文献
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《Industrial Crops and Products》2000,11(1):7-10
Grindelia chiloensis (Asteraceae) is a shrub native to Patagonia, Argentina, in the process of domestication as a source of resin to complement rosin production by pines. Vegetative propagation to multiply selected genotypes has produced breakthroughs in the cultivation of new crops like jojoba (Simmondsia chinesis). The only available way to propagate Grindelia is by transplanting seedlings or direct seeding. Both alternatives rely on selected varieties, a process that takes several years in an open-pollinated, self-incompatible species. The objective of this study was to generate a protocol for the vegetative propagation of G. chiloensis. Two experiments were carried out to evaluate the effect of the mother plant, the source of the cutting (apical or basal), and the concentration of indole butyric acid (IBA) on rooting success and root and above-ground biomass accumulation. A third study was conducted to evaluate the field survival of the propagated plants. Stems (15 cm) were cut from several mother plants growing in the field and stored in plastic containers with ice for about 4 h. Two types of cuttings were prepared from each stem: apical (upper 6–8 nodes) and basal (lower 6–8 nodes). A commercially available IBA source (Hormex, rooting powder, Brooker Chemical, Hollywood, CA) was used at six concentrations (0.1, 0.3, 0.8, 1.6, 3.0, and 4.5%). The cuttings were dipped in water and in the plant regulator and planted into speedlings filled with peat moss, vermiculite and sand (1:1:1, v/v/v). The speedlings were placed under a mist system in a greenhouse at 25°C. Rooting success and root weight were evaluated 30 days after the experiments were started. The position of the cutting, the IBA concentration, and the mother plant affected rooting success. None of the basal cuttings rooted even with IBA treatment. For the apical cuttings, IBA concentrations between 0.1 and 1.6% resulted in more than 64% rooting and the largest root mass (P<0.01). The control cuttings (0% IBA) did not produce adventitious roots. Accessions differed on rooting success. Transplanting survival varied between 25 and 100% depending on the clone. Vegetative propagation will allow the multiplication of Grindelia clones selected for their productive superiority. Traits such as resin content and composition, and regrowth after harvest are important characteristics to select for. 相似文献
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为进一步探究茶树不同嫩度的嫩枝插穗根系和地上部生长适宜的生根剂处理时间及内源激素水平,本试验以3年生台茶12号嫩枝为试验材料,采用酶联免疫吸附测定法（ELISA）分析了嫩梢不同部位IAA、ZR、GA3和ABA含量,同时研究了生根剂处理时间对插穗茎基部激素含量和茶苗扦插快繁的影响。结果表明,在茶树嫩枝顶部一芽一叶至一芽二叶初展梢（BL1）、半功能叶（L2）、第1片功能叶（L3）及其茎段（S1）、第2片功能叶（L4）及其茎段（S2）、第3片功能叶（L5）及其茎段（S3）、第4片功能叶茎段（S4）中,叶片内IAA和ABA以第2片功能叶含量最高,ZR以第3片功能叶含量最高,GA3含量则随叶片成熟度增加而增大。茎段S1—S3中IAA含量显著高于S4,而ABA含量则为S1显著高于S2—S4。浸泡100βmg·L-1 ABT-1号生根剂会显著提高插穗茎基部IAA含量,并使IAA/ABA和(IAA+ZR+GA3)/ABA值增至1.0左右,从而有利于生根。其中,保留顶梢带1片和2片功能叶的插穗（F1-1、F2-1）在浸泡生根剂前期1βh内IAA含量快速增加,且IAA/ABA和(IAA+ZR+GA3)/ABA值可增至1.0以上,其他插穗则在浸泡生根剂4βh后上述3个指标达到最大值。F1-1、F2-1浸泡生根剂0.5~1βh,摘除顶梢带1片功能叶的插穗（F1-2）浸泡生根剂4βh,F2-2、F3-1、F3-2浸泡生根剂3~4βh,IAA含量达到较高水平,而且IAA/ABA和 (IAA+ZR+GA3) /ABA值可增至1.0左右。出苗时,平均根系活力、平均生根条数和平均茎粗增加值的最大值出现在浸泡生根剂0~2βh内,其他根系和地上部生长情况以浸泡生根剂4βh表现较好。 相似文献
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Janet E. A. Seabrook 《American Journal of Potato Research》1990,67(5):267-275
Stem cuttings from potato plants are frequently used in multiplication programs for disease-free cultivars. The survival of these leafy cuttings is often very poor, and thus various techniques were investigated which were designed to increase rooting and cutting survival. Stock plants of cultivars “Caribe,” “Jemseg,” “Keswick,” “Russet Burbank,” “Sable,” “Sebago” and “Shepody” were grown in the greenhouse under long days. Promoting growth of the axillary shoots was successfully achieved by shading the shoot apex with aluminum foil. Trimming the outer leaves of the cuttings was deleterious to both survival and rooting. A rooting hormone improved root initiation and development, and the use of shade cloth or intermittent mist increased survival by reducing wilting. A rooting substrate of vermiculite: perlite (1:1) provided sufficient aeration, support and drainage for the cuttings. Antitranspirants sprayed on the stock plants prior to the excision of cuttings and also on the excised cuttings did not improve rooting or survival. The addition of activated charcoal (1% w:w) increased rooting of the cuttings and improved vigor of potted plants obtained from the cuttings. 相似文献
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本文比较研究了气雾栽培对碧早香、福鼎大白、丽早香和惠明茶1号4个茶树品种短枝扦插的成活率、叶绿素SPAD值、生长势和根系吸收能力的影响。结果表明：气雾栽培条件下4个茶树品种的扦插成活率均达到96%以上;叶绿素SPAD、生长势、根系形态和根系活力在各品种间差异显著;叶绿素SPAD、生长势和根系形态均随栽培时间增长而增加,均表现为碧早香>福鼎大白>丽早香>惠明茶1号;根系活力在生根后30 d整体出现高峰期,表现为生根后30 d>生根后40 d>生根后20 d>生根后10 d,根系活力最高的是碧早香。 相似文献
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为深入研究亚热带地区薰衣草无性繁殖方法,验证在南方地区建立薰衣草育苗基地的可行性,在南宁地区研究了不同基质、枝条部位、IBA浓度和处理时间对齿叶薰衣草、甜薰衣草和羽叶薰衣草扦插成活效果的影响。结果显示,甜薰衣草扦插成活效果要显著优于齿叶薰衣草和羽叶薰衣草,河沙和珍珠岩可作为薰衣草的扦插基质,枝条中部作插穗成活效果更佳,而IBA处理浓度和时间对不同薰衣草扦插成活效果的影响差异较大。综合分析表明,齿叶薰衣草最佳扦插条件为枝条中部+河沙基质+1000 mg/L的IBA处理60 s,甜薰衣草为枝条中部+珍珠岩基质+1000 mg/L的IBA处理30 s,羽叶薰衣草为枝条基部+河沙基质+500 mg/L的IBA处理15 s。本研究表明在南宁地区进行3种薰衣草的扦插育苗是可行的。 相似文献
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不同激素种类、浓度及浸泡时间对金蒲桃扦插生根的影响 总被引：1，自引：0，他引：1
以金蒲桃半木质化枝条作为插穗,以黄心土+砂（1∶1）为基质,通过正交试验针对不同激素种类、浓度以及浸泡时间等因素研究金蒲桃扦插生根的效果,从而获得最适宜金蒲桃扦插生根的处理,为其扦插繁殖提供理论基础和技术支持。结果表明:金蒲桃以皮层组织生根为主,较好的处理插穗成活率超过90%,激素浓度是影响金蒲桃扦插生根最主要的因素,其次是激素种类,浸泡时间的影响最小。极差分析结果发现,扦插生根率最适合的因素组合A2B2C3（500 mg/L IBA浸泡2 min）或A2B3C1（200 mg/L IBA浸泡30 min）,扦插生根数量最适合的因素组合为A1B1C1（1000 mg/L NAA浸泡30 min）,扦插生根平均根长最适合的因素组合为A3B3C2（200 mg/L“根太阳”生根剂浸泡10 min）,最适合扦插生根最长根长的因素组合为A2B1C2（1000 mg/L IBA浸泡10 min）,最适合扦插生根效果指数的因素组合为A1B1C1（1000 mg/L NAA浸泡30 min）。主成分分析联合生根效果指数指标极差分析结果表明,A1B1C1（1000 mg/L NAA浸泡30 min）和A1B2C2（500 mg/L NAA浸泡10 min）是适宜金蒲桃扦插较好的组合。总之,金蒲桃是一种扦插相对比较容易的植物,该研究结果可为生产中金蒲桃的扦插繁殖提供参考。 相似文献