共查询到19条相似文献，搜索用时 149 毫秒
1.
2.
3.
为探究杜梨嫩枝扦插的影响因素,筛选出最佳扦插方法,提高其扦插成活率,以杜梨嫩枝为试材,采用单因素试验设计筛选最优插条来源、新梢部段、插条长度和扦插基质,正交试验设计筛选最佳扦插生长调节剂配比。结果表明：连栋温室中采集的杜梨新梢中部段、长10～15 cm的插条更适合杜梨嫩枝扦插;IBA对扦插生根的影响大于NAA和IAA,IBA主要影响生根率和平均根数,NAA和IAA主要影响平均根长;基质湿度和基质配比是影响扦插成活的2个重要因素,其中基质湿度对嫩枝扦插的影响大于基质配比。综上,以长10～15 cm的温室杜梨新梢中部段为插条,在100 mg/L IBA+40 mg/L NAA+10 mg/L IAA中浸泡1 h,再插入河沙∶珍珠岩∶草炭土=1∶2∶2的半干湿基质中,扦插生根率可达70%。 相似文献
4.
野生毛葡萄扦插与嫁接试验 总被引：1，自引：0，他引：1
以难生根的野生毛葡萄插条为试材,研究基质配比、不同植物生长调节剂配比对其扦插生根率的影响。结果表明:经过吲哚丁酸(IBA)150mg/L处理后扦插在河沙:珍珠岩:泥炭体积比(1:1:1)的混合基质上,同时经过根部加温,插条缠膜,基质覆膜等综合技术措施,生根率可以达到67.5%;用50mg/L维生素C处理葡萄接穗后嫁接在野生毛葡萄砧木上,显著提高了嫁接成活率。 相似文献
5.
《中国园艺文摘》2016,(6)
沙棘是集生态与经济价值于一体的重要经济树种,对改良土壤、美化环境有重要意义。采用IBA 200 mg/L、150 mg/L、100 mg/L、50 mg/L 4种不同浓度浸泡插条16 h,在沙+土1∶1基质条件下,结果表明大果沙棘嫩枝扦插成活率最高的浓度是IBA 100 mg/L;采用雌株‘橙色’、‘萨彦娜’,雄株‘阿列伊’3个沙棘品种作为植物样本,以容易采集的河沙和当地壤土为原材料,配制沙+土3∶1、沙+土2∶1、沙+土1∶1、沙和土5种基质,采用最适浓度100 mg/L浸泡,比较插条成活率、生根数、生根根长,结果以沙+土3∶1作基质更利于插条成活,成活率最高达到93.6%。此外,在各品种之间,雄性品种‘阿列伊’最容易成活,‘萨彦娜’生根数最多,‘橙色’生根最长。 相似文献
6.
植物生长调节剂对竹节秋海棠插枝生根的影响 总被引：6，自引：0，他引：6
试验观察了植物生长调节剂NAA、IAA、IBA、6-BA、2，4-D等对竹节秋海棠插枝生根的效应．结果表明，不同植物生长调节剂对竹节秋海棠插枝生根的影响不同，同一植物生长调节剂不同浓度对其生根也有所不同。其中NAA以150mg／L(处理插条基部3．5h)效果最好；IAA以1250mg／L(处理茎尖基部2h)效果最好；IBA以200rag／L(处理茎尖基部5h)效果最好；2，4-D以1．5mg／L(处理插条基部4h)效果最好：而6-BA则对竹节秋海棠插枝生根有抑制作用，并且随着浓度的升高而增大，当浓度为3．5mg／L时，所有插条均不生根． 相似文献
7.
8.
9.
以‘湘林4号’油茶为试验材料,研究生长调节剂吲哚乙酸(IAA)、吲哚丁酸(IBA)、萘乙酸(NAA)及其不同浓度(50 mg/L、150 mg/L、300 mg/L)对油茶扦插生长的影响。结果表明:生长调节剂IAA、IBA、NAA对油茶扦插生根具有明显的促进作用,且均以浓度150 mg/L的效果最佳。3种生长调节剂中,NAA和IBA的促进作用最强,显著高于IAA。 相似文献
10.
11.
12.
以金边虎尾兰、月季与天竺葵为试材,研究不同生长调节剂及其浓度对3种园林植物扦插生根的影响。结果表明:金边虎尾兰叶基段以100mg/L浓度的IBA或NAA扦插效果较好,叶尖段以IBA 100～200mg/L或NAA 200mg/L扦插效果较好,生根率均达到100%;100～200mg/L浓度的IBA与100mg/L浓度的NAA对月季茎插生根效果较好,生根率达75.6%～77.8%;天竺葵茎插各处理的生根率均达到100%,但从平均生根数上比较,100mg/L NAA或25mg/L IBA对其扦插生根效果最佳,25～300mg/L的IAA对其生根数有抑制作用。 相似文献
13.
The effect of the nitrogen nutrition of stock plants of Justicia gendarussa L. on the rooting of cuttings was studied in sand culture under high, medium and low levels of nitrogen.Nitrogen starvation induced rooting. Exogenous application of the auxins IAA (indol-3yl-acetic acid), IBA (indol-3yl-butyric acid) and NAA (naphth-lyl-acetic acid) greatly increased the rooting response of cuttings from-stock plants grown with small amounts of nitrogen.The root-promoting effect of a low nitrogen supply was associated with a retardation of growth in the stock plants from which the cuttings were made. High C/N (total available carbohydrates/total nitrogen) and P/N (total phosphorus/total nitrogen) ratios increased anthocyanin pigmentation in the shoot, and increased rooting cofactor activity in the tissues of cuttings. The phenolic compounds, ferulic acid, p-hydroxybenzoic acid and p-coumaric acid were present in the shoots of all three nutritional treatments and acted as important cofactors in the cuttings. In general, rooting cofactor activity was inversely related to nitrogen supply and the activity was highest under low nitrogen.The cuttings taken from plants grown under different levels of nitrogen interacted differentially with the exogenously applied auxins. 相似文献
14.
15.
16.
植物生长调节剂对酸枣扦插繁殖的影响 总被引：2，自引：0，他引：2
以酸枣为试材,进行不同植物生长调节剂和不同浓度处理的嫩枝扦插试验,研究3种植物生长调节剂对酸枣扦插繁殖的影响。结果表明:NAA、IAA的3000mg/L浓度速蘸效果为好,生根率分别达到74%和64%。酸枣进行嫩枝扦插,插穗类型平均生根率存在较大差异,枣头一次枝梢部平均生根率明显高于其它插穗类型,平均生根率为71.8%,枣头中基部插穗次之,平均生根率为45.3%,枣头二次枝平均生根率最低,平均生根率为42.6%。 相似文献
17.
The effect of combinations of auxin sources and concentrations, temperature shifts, light intensity and light reduction on shoot-tips were studied relative to root formation of Rosa hybrida L. ‘Bridal Pink’ propagated in vitro. 2,4-dichlorophenoxyacetic acid alone was almost ineffective, and similarly its combinations with other auxins were less effective than other auxin combinations. While indolebutyric acid (IBA) alone did not stimulate rooting, both indoleacetic acid (IAA) and naphthaleneacetic acid (NAA) were effective. Combinations of NAA and IBA and NAA and IAA were equally effective in stimulating rooting and also enhanced rooting more than IAA, IBA or NAA alone. When root quality is considered, the combination of NAA and IBA was better than that of NAA and IAA.An additive effect on rooting existed between NAA and IAA at most concentrations used. A similar effect was evident between NAA and IBA except when NAA was used at 0.025 mg/l, in which cases synergistic effects were observed. Light reduction to the rooting area, light intensities of 1.0 K lux or lower and holding the cultures for 1 week at 5°C all enhanced rooting. 相似文献
18.
植物生长调节剂对‘长富—2’苹果离体繁殖的效果表明:(1)增殖和生长以BA 1.0—1.5mg/L、IBA 0.5mg/L 较为适宜,高浓度的 BA 和 IAB 易产生玻璃苗和其它异常现象;赤霉素促进新梢的生长.浓度为3.0mg/L 时对增殖有促进作用.(2)三十烷醇对增殖和生长具有显著的效应.(3)不定根的诱导以附加1.0—3.0mg/L IAA 或0.5mg/L IBA 较好.(4)培养基中附加 PP333可以促进根的形成。提高试管苗的移栽成活率.(5)转移培养对生根率和生根数目无显著影响,但有利于试管苗的移栽. 相似文献
19.
SummaryAnnatto (Bixa orellana L.) is a tree indigenous to tropical America that has been naturalised throughout the Indian sub-continent. The plant is chiefly valued for its carotenoid pigments, annatto. Methods for the clonal propagation of hardwood and softwood cuttings, air-layering, budding, and grafting of annatto were investigated. Hardwood cuttings collected during the wet Summer months (June-July) were treated with indole-3-acetic acid (IAA), indole-3-butyric acid (IBA), or naphthaleneacetic acid (NAA) at varying concentrations. The highest percentage rooting (63.4%), along with highest number of roots (8.33 per cutting) were achieved by hardwood cuttings after 12 h of 2.5 mM IAA treatment. Among the various auxin treatments of softwood cuttings, 5.0 mM IBA in combination with 5.0 mM NAA for 5 min resulted in a significant (P < 0.05) rooting percentage (56.7%). The responses of softwood cuttings to an auxin analogue (boric acid) and/or to thiamine hydrochloride (vitamin B) were inferior to synthetic auxins. When subjected to air-layering, hardwood branches gave 100% rooting without any application of hormone. Among the different types of budding methods attempted (patch, T, or I), patch budding produced the highest efficiency (78%) of propagation. Splice-grafting could also be used for conventional propagation of annatto, with a 50% survival rate. Annatto can therefore be cloned by adopting these methods. Propagation based on softwood cuttings facilitated moderate-scale cloning of this valuable, elite germplasm. 相似文献